/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-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/bigshot_s2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 18:16:26,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 18:16:26,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 18:16:26,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 18:16:26,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 18:16:26,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 18:16:26,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 18:16:26,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 18:16:26,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 18:16:26,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 18:16:26,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 18:16:26,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 18:16:26,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 18:16:26,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 18:16:26,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 18:16:26,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 18:16:26,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 18:16:26,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 18:16:26,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 18:16:26,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 18:16:26,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 18:16:26,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 18:16:26,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 18:16:26,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 18:16:26,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 18:16:26,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 18:16:26,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 18:16:26,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 18:16:26,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 18:16:26,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 18:16:26,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 18:16:26,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 18:16:26,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 18:16:26,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 18:16:26,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 18:16:26,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 18:16:26,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 18:16:26,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 18:16:26,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 18:16:26,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 18:16:26,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 18:16:26,642 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-PN-SemanticLbe.epf [2022-12-12 18:16:26,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 18:16:26,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 18:16:26,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 18:16:26,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 18:16:26,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 18:16:26,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 18:16:26,674 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 18:16:26,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 18:16:26,674 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 18:16:26,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 18:16:26,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 18:16:26,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 18:16:26,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 18:16:26,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 18:16:26,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 18:16:26,676 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 18:16:26,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 18:16:26,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 18:16:26,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 18:16:26,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 18:16:26,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 18:16:26,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 18:16:26,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 18:16:26,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:16:26,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 18:16:26,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 18:16:26,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 18:16:26,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 18:16:26,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 18:16:26,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 18:16:26,677 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 18:16:26,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 18:16:26,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 18:16:26,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 18:16:26,973 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 18:16:26,975 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 18:16:26,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2022-12-12 18:16:27,935 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 18:16:28,185 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 18:16:28,185 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2022-12-12 18:16:28,196 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06797da40/b02ecfa8f7f24df6979417db9f36d38a/FLAGbedafb92c [2022-12-12 18:16:28,213 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06797da40/b02ecfa8f7f24df6979417db9f36d38a [2022-12-12 18:16:28,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 18:16:28,216 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 18:16:28,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 18:16:28,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 18:16:28,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 18:16:28,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a020928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28, skipping insertion in model container [2022-12-12 18:16:28,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 18:16:28,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 18:16:28,529 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2022-12-12 18:16:28,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:16:28,551 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 18:16:28,584 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2022-12-12 18:16:28,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:16:28,652 INFO L208 MainTranslator]: Completed translation [2022-12-12 18:16:28,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28 WrapperNode [2022-12-12 18:16:28,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 18:16:28,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 18:16:28,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 18:16:28,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 18:16:28,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,706 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-12 18:16:28,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 18:16:28,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 18:16:28,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 18:16:28,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 18:16:28,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,734 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 18:16:28,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 18:16:28,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 18:16:28,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 18:16:28,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28" (1/1) ... [2022-12-12 18:16:28,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:16:28,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:16:28,781 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) [2022-12-12 18:16:28,790 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 [2022-12-12 18:16:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 18:16:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 18:16:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-12 18:16:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 18:16:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 18:16:28,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 18:16:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 18:16:28,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 18:16:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 18:16:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 18:16:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 18:16:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 18:16:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 18:16:28,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 18:16:28,814 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 18:16:28,924 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 18:16:28,925 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 18:16:29,105 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 18:16:29,109 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 18:16:29,110 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-12 18:16:29,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:16:29 BoogieIcfgContainer [2022-12-12 18:16:29,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 18:16:29,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 18:16:29,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 18:16:29,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 18:16:29,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 06:16:28" (1/3) ... [2022-12-12 18:16:29,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37641761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:16:29, skipping insertion in model container [2022-12-12 18:16:29,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:28" (2/3) ... [2022-12-12 18:16:29,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37641761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:16:29, skipping insertion in model container [2022-12-12 18:16:29,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:16:29" (3/3) ... [2022-12-12 18:16:29,117 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2022-12-12 18:16:29,130 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 18:16:29,131 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 18:16:29,131 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 18:16:29,219 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 18:16:29,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 82 transitions, 180 flow [2022-12-12 18:16:29,306 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2022-12-12 18:16:29,306 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:16:29,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 4/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2022-12-12 18:16:29,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 82 transitions, 180 flow [2022-12-12 18:16:29,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 69 transitions, 150 flow [2022-12-12 18:16:29,314 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 18:16:29,339 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 69 transitions, 150 flow [2022-12-12 18:16:29,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 69 transitions, 150 flow [2022-12-12 18:16:29,368 INFO L130 PetriNetUnfolder]: 3/69 cut-off events. [2022-12-12 18:16:29,368 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:16:29,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 3/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2022-12-12 18:16:29,370 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 69 transitions, 150 flow [2022-12-12 18:16:29,370 INFO L226 LiptonReduction]: Number of co-enabled transitions 144 [2022-12-12 18:16:31,702 INFO L241 LiptonReduction]: Total number of compositions: 55 [2022-12-12 18:16:31,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 18:16:31,717 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@39a6c996, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 18:16:31,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 18:16:31,721 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2022-12-12 18:16:31,721 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:16:31,722 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:16:31,722 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:16:31,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:16:31,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:16:31,726 INFO L85 PathProgramCache]: Analyzing trace with hash 363103961, now seen corresponding path program 1 times [2022-12-12 18:16:31,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:16:31,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412879494] [2022-12-12 18:16:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:31,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:16:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:31,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:16:31,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412879494] [2022-12-12 18:16:31,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412879494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:16:31,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:16:31,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:16:31,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190178440] [2022-12-12 18:16:31,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:16:31,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:16:31,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:16:31,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:16:31,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:16:31,924 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-12 18:16:31,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:31,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:16:31,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-12 18:16:31,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:16:31,954 INFO L130 PetriNetUnfolder]: 5/20 cut-off events. [2022-12-12 18:16:31,954 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:16:31,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 5/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 29. Up to 17 conditions per place. [2022-12-12 18:16:31,955 INFO L137 encePairwiseOnDemand]: 12/14 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2022-12-12 18:16:31,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2022-12-12 18:16:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:16:31,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:16:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2022-12-12 18:16:31,963 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2022-12-12 18:16:31,965 INFO L295 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2022-12-12 18:16:31,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 14 transitions, 68 flow [2022-12-12 18:16:31,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 14 transitions, 68 flow [2022-12-12 18:16:31,967 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 68 flow [2022-12-12 18:16:31,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:31,967 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:16:31,967 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:16:31,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 18:16:31,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:16:31,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:16:31,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1635382613, now seen corresponding path program 1 times [2022-12-12 18:16:31,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:16:31,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885234708] [2022-12-12 18:16:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:31,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:16:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:32,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:16:32,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885234708] [2022-12-12 18:16:32,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885234708] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:16:32,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:16:32,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 18:16:32,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353308900] [2022-12-12 18:16:32,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:16:32,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 18:16:32,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:16:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 18:16:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-12 18:16:32,509 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-12 18:16:32,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 68 flow. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:32,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:16:32,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-12 18:16:32,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:16:32,620 INFO L130 PetriNetUnfolder]: 9/28 cut-off events. [2022-12-12 18:16:32,621 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:16:32,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 28 events. 9/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 66. Up to 25 conditions per place. [2022-12-12 18:16:32,624 INFO L137 encePairwiseOnDemand]: 10/14 looper letters, 15 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2022-12-12 18:16:32,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 132 flow [2022-12-12 18:16:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 18:16:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 18:16:32,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2022-12-12 18:16:32,629 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2022-12-12 18:16:32,629 INFO L295 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2022-12-12 18:16:32,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 132 flow [2022-12-12 18:16:32,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 132 flow [2022-12-12 18:16:32,630 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 132 flow [2022-12-12 18:16:32,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:32,630 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:16:32,630 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:16:32,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 18:16:32,630 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:16:32,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:16:32,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1035612942, now seen corresponding path program 1 times [2022-12-12 18:16:32,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:16:32,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940753809] [2022-12-12 18:16:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:32,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:16:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:32,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:16:32,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940753809] [2022-12-12 18:16:32,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940753809] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:16:32,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74851804] [2022-12-12 18:16:32,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:32,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:32,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:16:32,894 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) [2022-12-12 18:16:32,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 18:16:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:33,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-12 18:16:33,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:16:33,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:33,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:33,176 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-12 18:16:33,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-12 18:16:33,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:33,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 18:16:33,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 18:16:33,302 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-12 18:16:33,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 23 [2022-12-12 18:16:33,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:33,346 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 18:16:33,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-12 18:16:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:33,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:16:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:33,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74851804] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:16:33,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:16:33,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2022-12-12 18:16:33,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290439336] [2022-12-12 18:16:33,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:16:33,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 18:16:33,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:16:33,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 18:16:33,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-12-12 18:16:33,504 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-12 18:16:33,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 132 flow. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:33,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:16:33,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-12 18:16:33,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:16:33,853 INFO L130 PetriNetUnfolder]: 14/45 cut-off events. [2022-12-12 18:16:33,853 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 18:16:33,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 45 events. 14/45 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 2/39 useless extension candidates. Maximal degree in co-relation 157. Up to 42 conditions per place. [2022-12-12 18:16:33,854 INFO L137 encePairwiseOnDemand]: 9/14 looper letters, 18 selfloop transitions, 8 changer transitions 5/31 dead transitions. [2022-12-12 18:16:33,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 266 flow [2022-12-12 18:16:33,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 18:16:33,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 18:16:33,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 33 transitions. [2022-12-12 18:16:33,868 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2619047619047619 [2022-12-12 18:16:33,869 INFO L295 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2022-12-12 18:16:33,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 31 transitions, 266 flow [2022-12-12 18:16:33,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 26 transitions, 220 flow [2022-12-12 18:16:33,871 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 220 flow [2022-12-12 18:16:33,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:33,871 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:16:33,871 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:16:33,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 18:16:34,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:34,076 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:16:34,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:16:34,077 INFO L85 PathProgramCache]: Analyzing trace with hash 129562073, now seen corresponding path program 2 times [2022-12-12 18:16:34,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:16:34,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506891725] [2022-12-12 18:16:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:34,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:16:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:34,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:16:34,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506891725] [2022-12-12 18:16:34,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506891725] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:16:34,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577783242] [2022-12-12 18:16:34,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 18:16:34,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:34,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:16:34,424 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) [2022-12-12 18:16:34,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 18:16:34,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 18:16:34,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:16:34,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-12 18:16:34,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:16:34,564 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-12-12 18:16:34,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-12-12 18:16:34,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:34,612 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-12 18:16:34,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-12 18:16:34,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:34,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:34,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:34,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:34,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:34,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:16:34,824 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2022-12-12 18:16:34,868 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-12-12 18:16:34,880 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-12-12 18:16:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-12-12 18:16:35,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577783242] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:16:35,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:16:35,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2022-12-12 18:16:35,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959771454] [2022-12-12 18:16:35,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:16:35,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-12 18:16:35,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:16:35,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-12 18:16:35,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=489, Unknown=6, NotChecked=138, Total=702 [2022-12-12 18:16:35,028 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-12 18:16:35,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 220 flow. Second operand has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:35,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:16:35,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-12 18:16:35,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:16:35,716 INFO L130 PetriNetUnfolder]: 14/46 cut-off events. [2022-12-12 18:16:35,716 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:16:35,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 46 events. 14/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 198. Up to 43 conditions per place. [2022-12-12 18:16:35,717 INFO L137 encePairwiseOnDemand]: 9/14 looper letters, 18 selfloop transitions, 16 changer transitions 0/34 dead transitions. [2022-12-12 18:16:35,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 352 flow [2022-12-12 18:16:35,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 18:16:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 18:16:35,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 35 transitions. [2022-12-12 18:16:35,718 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.19230769230769232 [2022-12-12 18:16:35,718 INFO L295 CegarLoopForPetriNet]: 19 programPoint places, 25 predicate places. [2022-12-12 18:16:35,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 34 transitions, 352 flow [2022-12-12 18:16:35,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 352 flow [2022-12-12 18:16:35,719 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 352 flow [2022-12-12 18:16:35,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:35,719 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:16:35,720 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:16:35,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 18:16:35,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-12 18:16:35,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:16:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:16:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash -279616050, now seen corresponding path program 3 times [2022-12-12 18:16:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:16:35,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314914965] [2022-12-12 18:16:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:35,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:16:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:36,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:16:36,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314914965] [2022-12-12 18:16:36,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314914965] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:16:36,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682862111] [2022-12-12 18:16:36,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 18:16:36,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:36,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:16:36,322 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:16:36,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 18:16:36,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 18:16:36,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:16:36,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-12 18:16:36,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:16:36,432 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-12-12 18:16:36,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-12-12 18:16:36,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:36,499 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-12 18:16:36,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-12 18:16:36,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:36,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:36,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:36,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:36,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:36,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:36,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:16:36,717 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_169 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_169) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2022-12-12 18:16:36,787 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_169 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_169) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-12-12 18:16:36,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-12-12 18:16:36,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682862111] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:16:36,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:16:36,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2022-12-12 18:16:36,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763591348] [2022-12-12 18:16:36,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:16:36,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-12 18:16:36,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:16:36,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-12 18:16:36,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=670, Unknown=14, NotChecked=106, Total=870 [2022-12-12 18:16:36,957 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-12 18:16:36,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 352 flow. Second operand has 30 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:36,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:16:36,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-12 18:16:36,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:16:37,687 INFO L130 PetriNetUnfolder]: 14/49 cut-off events. [2022-12-12 18:16:37,687 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:16:37,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 49 events. 14/49 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 255. Up to 46 conditions per place. [2022-12-12 18:16:37,688 INFO L137 encePairwiseOnDemand]: 9/14 looper letters, 19 selfloop transitions, 17 changer transitions 0/36 dead transitions. [2022-12-12 18:16:37,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 36 transitions, 444 flow [2022-12-12 18:16:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 18:16:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 18:16:37,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 31 transitions. [2022-12-12 18:16:37,689 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2012987012987013 [2022-12-12 18:16:37,689 INFO L295 CegarLoopForPetriNet]: 19 programPoint places, 35 predicate places. [2022-12-12 18:16:37,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 36 transitions, 444 flow [2022-12-12 18:16:37,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 36 transitions, 444 flow [2022-12-12 18:16:37,690 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 444 flow [2022-12-12 18:16:37,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:37,690 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:16:37,690 INFO L214 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:16:37,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 18:16:37,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:37,895 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:16:37,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:16:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash -79235975, now seen corresponding path program 4 times [2022-12-12 18:16:37,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:16:37,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94038407] [2022-12-12 18:16:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:37,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:16:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:38,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:16:38,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94038407] [2022-12-12 18:16:38,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94038407] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:16:38,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443829767] [2022-12-12 18:16:38,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 18:16:38,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:38,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:16:38,344 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:16:38,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 18:16:38,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 18:16:38,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:16:38,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-12 18:16:38,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:16:38,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:38,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:38,440 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-12 18:16:38,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-12 18:16:38,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:38,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 18:16:38,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 18:16:38,556 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-12 18:16:38,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 23 [2022-12-12 18:16:38,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:38,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:38,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 18:16:38,593 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 18:16:38,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-12 18:16:38,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:38,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:38,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 18:16:38,631 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 18:16:38,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2022-12-12 18:16:38,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:38,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:38,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 18:16:38,671 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 18:16:38,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2022-12-12 18:16:38,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:38,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:38,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 18:16:38,708 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 18:16:38,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-12-12 18:16:38,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:38,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:38,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 18:16:38,748 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 18:16:38,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2022-12-12 18:16:38,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:38,783 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 18:16:38,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-12-12 18:16:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:38,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:16:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:39,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443829767] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:16:39,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:16:39,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 32 [2022-12-12 18:16:39,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789329096] [2022-12-12 18:16:39,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:16:39,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-12 18:16:39,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:16:39,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-12 18:16:39,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2022-12-12 18:16:39,853 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-12 18:16:39,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 444 flow. Second operand has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:39,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:16:39,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-12 18:16:39,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:16:42,930 INFO L130 PetriNetUnfolder]: 29/101 cut-off events. [2022-12-12 18:16:42,931 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-12 18:16:42,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 101 events. 29/101 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 193 event pairs, 0 based on Foata normal form. 7/90 useless extension candidates. Maximal degree in co-relation 668. Up to 98 conditions per place. [2022-12-12 18:16:42,932 INFO L137 encePairwiseOnDemand]: 9/14 looper letters, 28 selfloop transitions, 24 changer transitions 15/67 dead transitions. [2022-12-12 18:16:42,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 971 flow [2022-12-12 18:16:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-12 18:16:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-12 18:16:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 68 transitions. [2022-12-12 18:16:42,933 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2556390977443609 [2022-12-12 18:16:42,933 INFO L295 CegarLoopForPetriNet]: 19 programPoint places, 53 predicate places. [2022-12-12 18:16:42,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 971 flow [2022-12-12 18:16:42,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 52 transitions, 740 flow [2022-12-12 18:16:42,934 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 52 transitions, 740 flow [2022-12-12 18:16:42,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:42,934 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:16:42,935 INFO L214 CegarLoopForPetriNet]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:16:42,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-12 18:16:43,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:43,140 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:16:43,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:16:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash 678387449, now seen corresponding path program 5 times [2022-12-12 18:16:43,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:16:43,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385510906] [2022-12-12 18:16:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:43,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:16:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 56 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-12 18:16:43,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:16:43,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385510906] [2022-12-12 18:16:43,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385510906] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:16:43,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611421373] [2022-12-12 18:16:43,658 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 18:16:43,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:43,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:16:43,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:16:43,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 18:16:43,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-12-12 18:16:43,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:16:43,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-12 18:16:43,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:16:43,910 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-12-12 18:16:43,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-12-12 18:16:43,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:43,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:16:43,994 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-12 18:16:43,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-12-12 18:16:44,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:44,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:44,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:44,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:44,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:44,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:44,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:44,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 18:16:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 56 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-12 18:16:44,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:16:44,309 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_331 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_331) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-12-12 18:16:44,465 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_331 (Array Int Int))) (= (select (select (store |c_#memory_int| c_~v~0.base v_ArrVal_331) 3) 7) 0)) is different from false [2022-12-12 18:16:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 56 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 7 not checked. [2022-12-12 18:16:46,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611421373] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:16:46,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:16:46,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2022-12-12 18:16:46,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531055375] [2022-12-12 18:16:46,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:16:46,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-12 18:16:46,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:16:46,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-12 18:16:46,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=919, Unknown=47, NotChecked=126, Total=1190 [2022-12-12 18:16:46,645 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-12 18:16:46,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 740 flow. Second operand has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:46,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:16:46,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-12 18:16:46,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:16:47,407 INFO L130 PetriNetUnfolder]: 9/41 cut-off events. [2022-12-12 18:16:47,407 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:16:47,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 41 events. 9/41 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 2/43 useless extension candidates. Maximal degree in co-relation 274. Up to 38 conditions per place. [2022-12-12 18:16:47,407 INFO L137 encePairwiseOnDemand]: 10/14 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2022-12-12 18:16:47,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 32 transitions, 521 flow [2022-12-12 18:16:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 18:16:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 18:16:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 26 transitions. [2022-12-12 18:16:47,408 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.15476190476190477 [2022-12-12 18:16:47,409 INFO L295 CegarLoopForPetriNet]: 19 programPoint places, 53 predicate places. [2022-12-12 18:16:47,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 32 transitions, 521 flow [2022-12-12 18:16:47,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 18:16:47,409 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 18:16:47,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:16:47,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 18:16:47,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 18:16:47,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 18:16:47,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-12 18:16:47,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:47,617 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2022-12-12 18:16:47,619 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 18:16:47,619 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 18:16:47,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 06:16:47 BasicIcfg [2022-12-12 18:16:47,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 18:16:47,621 INFO L158 Benchmark]: Toolchain (without parser) took 19405.42ms. Allocated memory was 197.1MB in the beginning and 393.2MB in the end (delta: 196.1MB). Free memory was 170.8MB in the beginning and 274.6MB in the end (delta: -103.9MB). Peak memory consumption was 93.5MB. Max. memory is 8.0GB. [2022-12-12 18:16:47,621 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 197.1MB. Free memory is still 173.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 18:16:47,621 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.81ms. Allocated memory is still 197.1MB. Free memory was 170.8MB in the beginning and 138.3MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-12-12 18:16:47,622 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.62ms. Allocated memory is still 197.1MB. Free memory was 138.3MB in the beginning and 135.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 18:16:47,622 INFO L158 Benchmark]: Boogie Preprocessor took 29.21ms. Allocated memory is still 197.1MB. Free memory was 135.7MB in the beginning and 134.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 18:16:47,622 INFO L158 Benchmark]: RCFGBuilder took 374.01ms. Allocated memory is still 197.1MB. Free memory was 134.1MB in the beginning and 119.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 18:16:47,622 INFO L158 Benchmark]: TraceAbstraction took 18508.00ms. Allocated memory was 197.1MB in the beginning and 393.2MB in the end (delta: 196.1MB). Free memory was 118.9MB in the beginning and 274.6MB in the end (delta: -155.8MB). Peak memory consumption was 41.0MB. Max. memory is 8.0GB. [2022-12-12 18:16:47,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 197.1MB. Free memory is still 173.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 437.81ms. Allocated memory is still 197.1MB. Free memory was 170.8MB in the beginning and 138.3MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.62ms. Allocated memory is still 197.1MB. Free memory was 138.3MB in the beginning and 135.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.21ms. Allocated memory is still 197.1MB. Free memory was 135.7MB in the beginning and 134.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 374.01ms. Allocated memory is still 197.1MB. Free memory was 134.1MB in the beginning and 119.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 18508.00ms. Allocated memory was 197.1MB in the beginning and 393.2MB in the end (delta: 196.1MB). Free memory was 118.9MB in the beginning and 274.6MB in the end (delta: -155.8MB). Peak memory consumption was 41.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 73 PlacesBefore, 19 PlacesAfterwards, 69 TransitionsBefore, 14 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 32 TrivialYvCompositions, 22 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 87, independent: 81, independent conditional: 81, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 87, independent: 81, independent conditional: 0, independent unconditional: 81, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 87, independent: 81, independent conditional: 0, independent unconditional: 81, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 87, independent: 81, independent conditional: 0, independent unconditional: 81, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 80, independent: 75, independent conditional: 0, independent unconditional: 75, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 80, independent: 75, independent conditional: 0, independent unconditional: 75, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 87, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 80, unknown conditional: 0, unknown unconditional: 80] , Statistics on independence cache: Total cache size (in pairs): 128, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 1107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 104 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.4s, OverallIterations: 7, TraceHistogramMax: 14, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 30 mSolverCounterUnknown, 334 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 334 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 174 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 268 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1520 IncrementalHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 268 mSolverCounterUnsat, 0 mSDtfsCounter, 1520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 294 GetRequests, 99 SyntacticMatches, 7 SemanticMatches, 188 ConstructedPredicates, 7 IntricatePredicates, 1 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=740occurred in iteration=6, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 798 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 203 NumberOfCodeBlocks, 203 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 276 ConstructedInterpolants, 55 QuantifiedInterpolants, 4088 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1140 ConjunctsInSsa, 239 ConjunctsInUnsatCore, 17 InterpolantComputations, 2 PerfectInterpolantSequences, 231/456 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 18:16:47,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...