/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:14:39,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:14:39,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:14:39,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:14:39,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:14:39,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:14:39,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:14:39,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:14:39,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:14:39,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:14:39,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:14:39,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:14:39,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:14:39,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:14:39,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:14:39,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:14:39,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:14:39,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:14:39,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:14:39,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:14:39,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:14:39,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:14:39,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:14:39,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:14:39,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 20:14:39,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 20:14:39,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 20:14:39,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 20:14:39,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 20:14:39,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 20:14:39,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 20:14:39,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 20:14:39,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 20:14:39,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 20:14:39,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 20:14:39,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 20:14:39,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 20:14:39,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 20:14:39,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:14:39,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:14:39,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:14:39,315 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 [2022-12-05 20:14:39,351 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:14:39,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:14:39,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:14:39,353 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:14:39,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:14:39,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:14:39,355 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:14:39,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:14:39,355 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:14:39,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:14:39,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:14:39,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:14:39,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:14:39,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:14:39,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:14:39,357 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:14:39,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:14:39,357 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:14:39,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:14:39,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:14:39,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:14:39,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:14:39,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:14:39,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:14:39,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:14:39,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:14:39,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:14:39,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:14:39,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:14:39,360 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:14:39,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:14:39,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:14:39,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:14:39,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:14:39,659 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:14:39,659 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:14:39,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2022-12-05 20:14:40,540 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:14:40,786 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:14:40,787 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2022-12-05 20:14:40,803 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9c1aef14/6cc9e6fc81d74beea1a32a97103eeb12/FLAGfc0ac8399 [2022-12-05 20:14:40,816 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9c1aef14/6cc9e6fc81d74beea1a32a97103eeb12 [2022-12-05 20:14:40,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:14:40,818 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:14:40,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:14:40,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:14:40,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:14:40,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:14:40" (1/1) ... [2022-12-05 20:14:40,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669f5ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:40, skipping insertion in model container [2022-12-05 20:14:40,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:14:40" (1/1) ... [2022-12-05 20:14:40,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:14:40,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:14:41,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:41,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:41,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:41,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:41,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:41,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:41,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:41,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:41,141 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/triangular-longest-2.i[30964,30977] [2022-12-05 20:14:41,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:14:41,150 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:14:41,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:41,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:41,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:41,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:41,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:41,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:41,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:41,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:41,187 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/triangular-longest-2.i[30964,30977] [2022-12-05 20:14:41,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:14:41,215 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:14:41,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41 WrapperNode [2022-12-05 20:14:41,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:14:41,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:14:41,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:14:41,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:14:41,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41" (1/1) ... [2022-12-05 20:14:41,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41" (1/1) ... [2022-12-05 20:14:41,262 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-05 20:14:41,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:14:41,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:14:41,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:14:41,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:14:41,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41" (1/1) ... [2022-12-05 20:14:41,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41" (1/1) ... [2022-12-05 20:14:41,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41" (1/1) ... [2022-12-05 20:14:41,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41" (1/1) ... [2022-12-05 20:14:41,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41" (1/1) ... [2022-12-05 20:14:41,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41" (1/1) ... [2022-12-05 20:14:41,291 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41" (1/1) ... [2022-12-05 20:14:41,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41" (1/1) ... [2022-12-05 20:14:41,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:14:41,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:14:41,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:14:41,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:14:41,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41" (1/1) ... [2022-12-05 20:14:41,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:14:41,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:14:41,325 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) [2022-12-05 20:14:41,348 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 [2022-12-05 20:14:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-05 20:14:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-05 20:14:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-05 20:14:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-05 20:14:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:14:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 20:14:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:14:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:14:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:14:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:14:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 20:14:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:14:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:14:41,365 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:14:41,516 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:14:41,517 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:14:41,632 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:14:41,637 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:14:41,638 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-05 20:14:41,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:14:41 BoogieIcfgContainer [2022-12-05 20:14:41,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:14:41,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:14:41,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:14:41,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:14:41,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:14:40" (1/3) ... [2022-12-05 20:14:41,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222aab0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:14:41, skipping insertion in model container [2022-12-05 20:14:41,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:41" (2/3) ... [2022-12-05 20:14:41,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222aab0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:14:41, skipping insertion in model container [2022-12-05 20:14:41,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:14:41" (3/3) ... [2022-12-05 20:14:41,645 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2022-12-05 20:14:41,661 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:14:41,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 20:14:41,661 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:14:41,701 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 20:14:41,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2022-12-05 20:14:41,750 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2022-12-05 20:14:41,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:14:41,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-05 20:14:41,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2022-12-05 20:14:41,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2022-12-05 20:14:41,758 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:14:41,769 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 64 transitions, 134 flow [2022-12-05 20:14:41,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 134 flow [2022-12-05 20:14:41,784 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2022-12-05 20:14:41,784 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:14:41,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-05 20:14:41,786 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 64 transitions, 134 flow [2022-12-05 20:14:41,786 INFO L188 LiptonReduction]: Number of co-enabled transitions 1078 [2022-12-05 20:14:43,778 INFO L203 LiptonReduction]: Total number of compositions: 51 [2022-12-05 20:14:43,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:14:43,800 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;@2d57ed62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:14:43,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-05 20:14:43,807 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-12-05 20:14:43,808 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:14:43,808 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:43,808 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-05 20:14:43,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:43,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash -977143138, now seen corresponding path program 1 times [2022-12-05 20:14:43,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:43,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977828466] [2022-12-05 20:14:43,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:43,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:44,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:44,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977828466] [2022-12-05 20:14:44,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977828466] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:44,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:44,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:14:44,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833892899] [2022-12-05 20:14:44,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:44,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:14:44,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:44,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:14:44,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:14:44,159 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:44,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 32 flow. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:44,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:44,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:44,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:44,225 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2022-12-05 20:14:44,225 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 20:14:44,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 395 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2022-12-05 20:14:44,227 INFO L137 encePairwiseOnDemand]: 9/13 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2022-12-05 20:14:44,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2022-12-05 20:14:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:14:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:14:44,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2022-12-05 20:14:44,234 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2022-12-05 20:14:44,235 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 32 flow. Second operand 4 states and 27 transitions. [2022-12-05 20:14:44,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2022-12-05 20:14:44,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:14:44,238 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2022-12-05 20:14:44,239 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2022-12-05 20:14:44,241 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2022-12-05 20:14:44,242 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2022-12-05 20:14:44,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:44,242 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:44,242 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:44,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:14:44,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:44,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:44,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1562132877, now seen corresponding path program 1 times [2022-12-05 20:14:44,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:44,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835413815] [2022-12-05 20:14:44,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:44,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:44,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:44,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835413815] [2022-12-05 20:14:44,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835413815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:44,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:44,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:14:44,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886924774] [2022-12-05 20:14:44,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:44,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:14:44,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:44,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:14:44,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:14:44,359 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:44,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:44,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:44,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:44,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:44,428 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2022-12-05 20:14:44,429 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-12-05 20:14:44,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 664 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2022-12-05 20:14:44,430 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2022-12-05 20:14:44,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2022-12-05 20:14:44,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 20:14:44,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 20:14:44,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 38 transitions. [2022-12-05 20:14:44,431 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2022-12-05 20:14:44,431 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 38 transitions. [2022-12-05 20:14:44,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2022-12-05 20:14:44,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 20:14:44,433 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2022-12-05 20:14:44,433 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2022-12-05 20:14:44,433 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2022-12-05 20:14:44,433 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2022-12-05 20:14:44,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:44,433 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:44,434 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:44,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:14:44,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:44,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:44,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1562125437, now seen corresponding path program 2 times [2022-12-05 20:14:44,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:44,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982572090] [2022-12-05 20:14:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:44,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:44,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:44,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982572090] [2022-12-05 20:14:44,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982572090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:44,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:44,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:14:44,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794862532] [2022-12-05 20:14:44,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:44,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:14:44,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:44,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:14:44,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:14:44,495 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:44,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:44,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:44,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:44,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:44,576 INFO L130 PetriNetUnfolder]: 126/219 cut-off events. [2022-12-05 20:14:44,576 INFO L131 PetriNetUnfolder]: For 298/298 co-relation queries the response was YES. [2022-12-05 20:14:44,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 219 events. 126/219 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 681 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 704. Up to 87 conditions per place. [2022-12-05 20:14:44,577 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 29 selfloop transitions, 15 changer transitions 8/52 dead transitions. [2022-12-05 20:14:44,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 348 flow [2022-12-05 20:14:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:14:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:14:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 42 transitions. [2022-12-05 20:14:44,580 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2022-12-05 20:14:44,580 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 7 states and 42 transitions. [2022-12-05 20:14:44,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 348 flow [2022-12-05 20:14:44,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 344 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-05 20:14:44,582 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 240 flow [2022-12-05 20:14:44,582 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2022-12-05 20:14:44,583 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 21 predicate places. [2022-12-05 20:14:44,583 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 240 flow [2022-12-05 20:14:44,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:44,583 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:44,583 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:44,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:14:44,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:44,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:44,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1571069540, now seen corresponding path program 1 times [2022-12-05 20:14:44,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:44,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100650140] [2022-12-05 20:14:44,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:44,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:44,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:44,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100650140] [2022-12-05 20:14:44,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100650140] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:44,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:44,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:14:44,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158027296] [2022-12-05 20:14:44,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:44,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 20:14:44,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:44,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 20:14:44,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 20:14:44,646 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:44,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 240 flow. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:44,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:44,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:44,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:44,772 INFO L130 PetriNetUnfolder]: 162/283 cut-off events. [2022-12-05 20:14:44,772 INFO L131 PetriNetUnfolder]: For 821/821 co-relation queries the response was YES. [2022-12-05 20:14:44,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 283 events. 162/283 cut-off events. For 821/821 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 949 event pairs, 16 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1058. Up to 71 conditions per place. [2022-12-05 20:14:44,776 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 37 selfloop transitions, 21 changer transitions 3/61 dead transitions. [2022-12-05 20:14:44,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 488 flow [2022-12-05 20:14:44,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 20:14:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 20:14:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 46 transitions. [2022-12-05 20:14:44,779 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2022-12-05 20:14:44,780 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 240 flow. Second operand 8 states and 46 transitions. [2022-12-05 20:14:44,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 488 flow [2022-12-05 20:14:44,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 467 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-12-05 20:14:44,787 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 346 flow [2022-12-05 20:14:44,787 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2022-12-05 20:14:44,788 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 31 predicate places. [2022-12-05 20:14:44,788 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 346 flow [2022-12-05 20:14:44,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:44,788 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:44,789 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:44,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:14:44,789 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:44,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:44,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1617536060, now seen corresponding path program 2 times [2022-12-05 20:14:44,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:44,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681079595] [2022-12-05 20:14:44,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:44,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:44,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:44,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681079595] [2022-12-05 20:14:44,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681079595] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:44,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:44,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:14:44,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984054627] [2022-12-05 20:14:44,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:44,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 20:14:44,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:44,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 20:14:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 20:14:44,888 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:44,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 346 flow. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:44,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:44,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:44,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:44,969 INFO L130 PetriNetUnfolder]: 154/271 cut-off events. [2022-12-05 20:14:44,969 INFO L131 PetriNetUnfolder]: For 1323/1323 co-relation queries the response was YES. [2022-12-05 20:14:44,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 271 events. 154/271 cut-off events. For 1323/1323 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 922 event pairs, 22 based on Foata normal form. 8/279 useless extension candidates. Maximal degree in co-relation 1179. Up to 67 conditions per place. [2022-12-05 20:14:44,971 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 30 selfloop transitions, 21 changer transitions 8/59 dead transitions. [2022-12-05 20:14:44,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 576 flow [2022-12-05 20:14:44,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:14:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:14:44,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 40 transitions. [2022-12-05 20:14:44,972 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.43956043956043955 [2022-12-05 20:14:44,973 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 346 flow. Second operand 7 states and 40 transitions. [2022-12-05 20:14:44,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 576 flow [2022-12-05 20:14:44,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 537 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-05 20:14:44,977 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 398 flow [2022-12-05 20:14:44,978 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2022-12-05 20:14:44,979 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 35 predicate places. [2022-12-05 20:14:44,979 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 398 flow [2022-12-05 20:14:44,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:44,979 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:44,979 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:44,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:14:44,980 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:44,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:44,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1395976800, now seen corresponding path program 3 times [2022-12-05 20:14:44,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:44,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316157545] [2022-12-05 20:14:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:44,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:45,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:45,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316157545] [2022-12-05 20:14:45,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316157545] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:14:45,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366327913] [2022-12-05 20:14:45,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 20:14:45,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:14:45,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:14:45,080 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) [2022-12-05 20:14:45,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 20:14:45,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 20:14:45,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 20:14:45,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 20:14:45,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:14:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:45,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:14:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:45,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366327913] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:14:45,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:14:45,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-05 20:14:45,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009965748] [2022-12-05 20:14:45,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:14:45,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-05 20:14:45,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:45,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-05 20:14:45,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-12-05 20:14:45,279 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:45,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 398 flow. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:45,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:45,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:45,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:45,529 INFO L130 PetriNetUnfolder]: 202/351 cut-off events. [2022-12-05 20:14:45,531 INFO L131 PetriNetUnfolder]: For 2187/2187 co-relation queries the response was YES. [2022-12-05 20:14:45,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 351 events. 202/351 cut-off events. For 2187/2187 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1210 event pairs, 10 based on Foata normal form. 16/367 useless extension candidates. Maximal degree in co-relation 1647. Up to 87 conditions per place. [2022-12-05 20:14:45,533 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 36 selfloop transitions, 38 changer transitions 26/100 dead transitions. [2022-12-05 20:14:45,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 100 transitions, 992 flow [2022-12-05 20:14:45,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 20:14:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 20:14:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 87 transitions. [2022-12-05 20:14:45,537 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4182692307692308 [2022-12-05 20:14:45,537 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 398 flow. Second operand 16 states and 87 transitions. [2022-12-05 20:14:45,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 100 transitions, 992 flow [2022-12-05 20:14:45,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 927 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-12-05 20:14:45,542 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 705 flow [2022-12-05 20:14:45,543 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=705, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2022-12-05 20:14:45,544 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 49 predicate places. [2022-12-05 20:14:45,545 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 705 flow [2022-12-05 20:14:45,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:45,545 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:45,545 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:45,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 20:14:45,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-05 20:14:45,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:45,753 INFO L85 PathProgramCache]: Analyzing trace with hash -635261783, now seen corresponding path program 4 times [2022-12-05 20:14:45,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:45,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142014009] [2022-12-05 20:14:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:14:45,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:45,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142014009] [2022-12-05 20:14:45,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142014009] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:14:45,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174235971] [2022-12-05 20:14:45,865 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 20:14:45,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:14:45,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:14:45,867 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) [2022-12-05 20:14:45,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 20:14:45,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 20:14:45,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 20:14:45,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-05 20:14:45,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:14:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:14:45,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:14:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:14:46,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174235971] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:14:46,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:14:46,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-05 20:14:46,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816920633] [2022-12-05 20:14:46,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:14:46,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 20:14:46,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:46,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 20:14:46,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-12-05 20:14:46,066 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:46,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 705 flow. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:46,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:46,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:46,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:46,258 INFO L130 PetriNetUnfolder]: 258/463 cut-off events. [2022-12-05 20:14:46,258 INFO L131 PetriNetUnfolder]: For 4314/4314 co-relation queries the response was YES. [2022-12-05 20:14:46,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 463 events. 258/463 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1659 event pairs, 55 based on Foata normal form. 32/495 useless extension candidates. Maximal degree in co-relation 2419. Up to 237 conditions per place. [2022-12-05 20:14:46,261 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 64 selfloop transitions, 27 changer transitions 27/118 dead transitions. [2022-12-05 20:14:46,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 1473 flow [2022-12-05 20:14:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 20:14:46,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 20:14:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 83 transitions. [2022-12-05 20:14:46,263 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2022-12-05 20:14:46,263 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 705 flow. Second operand 16 states and 83 transitions. [2022-12-05 20:14:46,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 1473 flow [2022-12-05 20:14:46,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 118 transitions, 1098 flow, removed 170 selfloop flow, removed 7 redundant places. [2022-12-05 20:14:46,273 INFO L231 Difference]: Finished difference. Result has 85 places, 70 transitions, 769 flow [2022-12-05 20:14:46,273 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=769, PETRI_PLACES=85, PETRI_TRANSITIONS=70} [2022-12-05 20:14:46,273 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 67 predicate places. [2022-12-05 20:14:46,273 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 769 flow [2022-12-05 20:14:46,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:46,274 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:46,274 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:46,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 20:14:46,478 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,SelfDestructingSolverStorable6 [2022-12-05 20:14:46,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1112219577, now seen corresponding path program 5 times [2022-12-05 20:14:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:46,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076143780] [2022-12-05 20:14:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:46,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:14:46,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:46,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076143780] [2022-12-05 20:14:46,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076143780] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:14:46,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243758804] [2022-12-05 20:14:46,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 20:14:46,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:14:46,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:14:46,597 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) [2022-12-05 20:14:46,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 20:14:46,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-05 20:14:46,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 20:14:46,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-05 20:14:46,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:14:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:14:46,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:14:46,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:14:46,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243758804] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:14:46,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:14:46,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-05 20:14:46,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977831997] [2022-12-05 20:14:46,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:14:46,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-05 20:14:46,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:46,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-05 20:14:46,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-12-05 20:14:46,802 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:46,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 70 transitions, 769 flow. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:46,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:46,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:46,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:47,156 INFO L130 PetriNetUnfolder]: 412/755 cut-off events. [2022-12-05 20:14:47,156 INFO L131 PetriNetUnfolder]: For 12102/12102 co-relation queries the response was YES. [2022-12-05 20:14:47,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 755 events. 412/755 cut-off events. For 12102/12102 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3337 event pairs, 42 based on Foata normal form. 32/787 useless extension candidates. Maximal degree in co-relation 3958. Up to 227 conditions per place. [2022-12-05 20:14:47,161 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 73 selfloop transitions, 72 changer transitions 37/182 dead transitions. [2022-12-05 20:14:47,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 182 transitions, 2087 flow [2022-12-05 20:14:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-05 20:14:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-05 20:14:47,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 114 transitions. [2022-12-05 20:14:47,162 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3986013986013986 [2022-12-05 20:14:47,162 INFO L175 Difference]: Start difference. First operand has 85 places, 70 transitions, 769 flow. Second operand 22 states and 114 transitions. [2022-12-05 20:14:47,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 182 transitions, 2087 flow [2022-12-05 20:14:47,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 182 transitions, 1966 flow, removed 51 selfloop flow, removed 4 redundant places. [2022-12-05 20:14:47,182 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 1476 flow [2022-12-05 20:14:47,182 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1476, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2022-12-05 20:14:47,182 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 98 predicate places. [2022-12-05 20:14:47,182 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 1476 flow [2022-12-05 20:14:47,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:47,183 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:47,183 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:47,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 20:14:47,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:14:47,390 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:47,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:47,390 INFO L85 PathProgramCache]: Analyzing trace with hash -835733511, now seen corresponding path program 6 times [2022-12-05 20:14:47,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:47,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850036044] [2022-12-05 20:14:47,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:47,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:14:47,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:47,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850036044] [2022-12-05 20:14:47,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850036044] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:14:47,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702467908] [2022-12-05 20:14:47,457 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-05 20:14:47,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:14:47,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:14:47,458 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) [2022-12-05 20:14:47,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 20:14:47,513 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-05 20:14:47,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 20:14:47,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-05 20:14:47,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:14:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:14:47,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:14:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:14:47,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702467908] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:14:47,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:14:47,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-05 20:14:47,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460245916] [2022-12-05 20:14:47,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:14:47,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 20:14:47,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:47,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 20:14:47,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-12-05 20:14:47,609 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:47,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 1476 flow. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:47,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:47,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:47,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:48,004 INFO L130 PetriNetUnfolder]: 612/1111 cut-off events. [2022-12-05 20:14:48,004 INFO L131 PetriNetUnfolder]: For 37657/37657 co-relation queries the response was YES. [2022-12-05 20:14:48,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7810 conditions, 1111 events. 612/1111 cut-off events. For 37657/37657 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5379 event pairs, 32 based on Foata normal form. 36/1147 useless extension candidates. Maximal degree in co-relation 7754. Up to 355 conditions per place. [2022-12-05 20:14:48,011 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 71 selfloop transitions, 134 changer transitions 41/246 dead transitions. [2022-12-05 20:14:48,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 246 transitions, 3750 flow [2022-12-05 20:14:48,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-05 20:14:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-05 20:14:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 140 transitions. [2022-12-05 20:14:48,012 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.39886039886039887 [2022-12-05 20:14:48,013 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 1476 flow. Second operand 27 states and 140 transitions. [2022-12-05 20:14:48,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 246 transitions, 3750 flow [2022-12-05 20:14:48,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 246 transitions, 3445 flow, removed 144 selfloop flow, removed 4 redundant places. [2022-12-05 20:14:48,067 INFO L231 Difference]: Finished difference. Result has 153 places, 158 transitions, 2639 flow [2022-12-05 20:14:48,067 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2639, PETRI_PLACES=153, PETRI_TRANSITIONS=158} [2022-12-05 20:14:48,068 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 135 predicate places. [2022-12-05 20:14:48,068 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 158 transitions, 2639 flow [2022-12-05 20:14:48,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:48,068 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:48,068 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:48,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 20:14:48,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:14:48,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:48,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash -240349933, now seen corresponding path program 7 times [2022-12-05 20:14:48,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:48,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982835657] [2022-12-05 20:14:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:48,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:14:48,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:48,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982835657] [2022-12-05 20:14:48,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982835657] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:14:48,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554180575] [2022-12-05 20:14:48,356 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-05 20:14:48,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:14:48,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:14:48,358 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) [2022-12-05 20:14:48,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 20:14:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:48,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-05 20:14:48,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:14:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:14:48,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:14:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:14:48,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554180575] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:14:48,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:14:48,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-12-05 20:14:48,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422404280] [2022-12-05 20:14:48,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:14:48,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 20:14:48,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:48,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 20:14:48,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-12-05 20:14:48,544 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:48,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 158 transitions, 2639 flow. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:48,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:48,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:48,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:49,153 INFO L130 PetriNetUnfolder]: 756/1375 cut-off events. [2022-12-05 20:14:49,153 INFO L131 PetriNetUnfolder]: For 83157/83157 co-relation queries the response was YES. [2022-12-05 20:14:49,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12535 conditions, 1375 events. 756/1375 cut-off events. For 83157/83157 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6895 event pairs, 12 based on Foata normal form. 40/1415 useless extension candidates. Maximal degree in co-relation 12464. Up to 458 conditions per place. [2022-12-05 20:14:49,164 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 62 selfloop transitions, 176 changer transitions 54/292 dead transitions. [2022-12-05 20:14:49,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 292 transitions, 6014 flow [2022-12-05 20:14:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-05 20:14:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-05 20:14:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 154 transitions. [2022-12-05 20:14:49,166 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.39487179487179486 [2022-12-05 20:14:49,166 INFO L175 Difference]: Start difference. First operand has 153 places, 158 transitions, 2639 flow. Second operand 30 states and 154 transitions. [2022-12-05 20:14:49,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 292 transitions, 6014 flow [2022-12-05 20:14:49,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 292 transitions, 4593 flow, removed 681 selfloop flow, removed 11 redundant places. [2022-12-05 20:14:49,331 INFO L231 Difference]: Finished difference. Result has 186 places, 202 transitions, 3512 flow [2022-12-05 20:14:49,332 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3512, PETRI_PLACES=186, PETRI_TRANSITIONS=202} [2022-12-05 20:14:49,333 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 168 predicate places. [2022-12-05 20:14:49,333 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 202 transitions, 3512 flow [2022-12-05 20:14:49,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:49,333 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:49,333 INFO L213 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:49,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-05 20:14:49,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-05 20:14:49,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:49,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1304283367, now seen corresponding path program 8 times [2022-12-05 20:14:49,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:49,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158388118] [2022-12-05 20:14:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:49,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:49,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:49,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158388118] [2022-12-05 20:14:49,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158388118] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:14:49,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586406558] [2022-12-05 20:14:49,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 20:14:49,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:14:49,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:14:49,714 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 20:14:49,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 20:14:49,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 20:14:49,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 20:14:49,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-05 20:14:49,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:14:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:49,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:14:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:50,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586406558] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:14:50,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:14:50,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2022-12-05 20:14:50,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252335972] [2022-12-05 20:14:50,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:14:50,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-05 20:14:50,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:50,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-05 20:14:50,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2022-12-05 20:14:50,005 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:50,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 202 transitions, 3512 flow. Second operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:50,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:50,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:50,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:51,253 INFO L130 PetriNetUnfolder]: 940/1683 cut-off events. [2022-12-05 20:14:51,253 INFO L131 PetriNetUnfolder]: For 118675/118675 co-relation queries the response was YES. [2022-12-05 20:14:51,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16449 conditions, 1683 events. 940/1683 cut-off events. For 118675/118675 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7991 event pairs, 18 based on Foata normal form. 52/1735 useless extension candidates. Maximal degree in co-relation 16365. Up to 574 conditions per place. [2022-12-05 20:14:51,267 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 90 selfloop transitions, 222 changer transitions 98/410 dead transitions. [2022-12-05 20:14:51,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 410 transitions, 8859 flow [2022-12-05 20:14:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-05 20:14:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-05 20:14:51,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 258 transitions. [2022-12-05 20:14:51,270 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3816568047337278 [2022-12-05 20:14:51,270 INFO L175 Difference]: Start difference. First operand has 186 places, 202 transitions, 3512 flow. Second operand 52 states and 258 transitions. [2022-12-05 20:14:51,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 410 transitions, 8859 flow [2022-12-05 20:14:51,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 410 transitions, 7981 flow, removed 412 selfloop flow, removed 8 redundant places. [2022-12-05 20:14:51,428 INFO L231 Difference]: Finished difference. Result has 255 places, 248 transitions, 5156 flow [2022-12-05 20:14:51,429 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=2952, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=5156, PETRI_PLACES=255, PETRI_TRANSITIONS=248} [2022-12-05 20:14:51,429 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 237 predicate places. [2022-12-05 20:14:51,429 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 248 transitions, 5156 flow [2022-12-05 20:14:51,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:51,430 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:51,430 INFO L213 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:51,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-05 20:14:51,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:14:51,635 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:51,635 INFO L85 PathProgramCache]: Analyzing trace with hash 2106254646, now seen corresponding path program 9 times [2022-12-05 20:14:51,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:51,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899989956] [2022-12-05 20:14:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:51,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:52,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:52,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899989956] [2022-12-05 20:14:52,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899989956] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:14:52,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14724204] [2022-12-05 20:14:52,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 20:14:52,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:14:52,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:14:52,012 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 20:14:52,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 20:14:52,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-05 20:14:52,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 20:14:52,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-05 20:14:52,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:14:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:52,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:14:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:52,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14724204] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:14:52,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:14:52,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-12-05 20:14:52,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935562795] [2022-12-05 20:14:52,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:14:52,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-05 20:14:52,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:52,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-05 20:14:52,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2022-12-05 20:14:52,784 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:52,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 248 transitions, 5156 flow. Second operand has 50 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:52,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:52,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:52,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:54,305 INFO L130 PetriNetUnfolder]: 1300/2403 cut-off events. [2022-12-05 20:14:54,305 INFO L131 PetriNetUnfolder]: For 323578/323578 co-relation queries the response was YES. [2022-12-05 20:14:54,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31690 conditions, 2403 events. 1300/2403 cut-off events. For 323578/323578 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 12208 event pairs, 236 based on Foata normal form. 72/2475 useless extension candidates. Maximal degree in co-relation 31579. Up to 993 conditions per place. [2022-12-05 20:14:54,332 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 219 selfloop transitions, 179 changer transitions 103/501 dead transitions. [2022-12-05 20:14:54,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 501 transitions, 14353 flow [2022-12-05 20:14:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-05 20:14:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-05 20:14:54,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 247 transitions. [2022-12-05 20:14:54,334 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2022-12-05 20:14:54,335 INFO L175 Difference]: Start difference. First operand has 255 places, 248 transitions, 5156 flow. Second operand 54 states and 247 transitions. [2022-12-05 20:14:54,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 501 transitions, 14353 flow [2022-12-05 20:14:55,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 501 transitions, 11122 flow, removed 1538 selfloop flow, removed 16 redundant places. [2022-12-05 20:14:55,108 INFO L231 Difference]: Finished difference. Result has 316 places, 340 transitions, 6942 flow [2022-12-05 20:14:55,109 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=3771, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=6942, PETRI_PLACES=316, PETRI_TRANSITIONS=340} [2022-12-05 20:14:55,109 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 298 predicate places. [2022-12-05 20:14:55,109 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 340 transitions, 6942 flow [2022-12-05 20:14:55,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:55,109 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:55,110 INFO L213 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:55,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-05 20:14:55,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:14:55,314 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:55,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:55,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1686668426, now seen corresponding path program 10 times [2022-12-05 20:14:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:55,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942821593] [2022-12-05 20:14:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:55,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:55,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942821593] [2022-12-05 20:14:55,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942821593] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:14:55,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948703994] [2022-12-05 20:14:55,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 20:14:55,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:14:55,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:14:55,705 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 20:14:55,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-05 20:14:55,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 20:14:55,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 20:14:55,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-05 20:14:55,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:14:55,857 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:55,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:14:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:56,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948703994] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:14:56,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:14:56,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-12-05 20:14:56,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566916115] [2022-12-05 20:14:56,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:14:56,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-05 20:14:56,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:56,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-05 20:14:56,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=1970, Unknown=0, NotChecked=0, Total=2450 [2022-12-05 20:14:56,350 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:14:56,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 340 transitions, 6942 flow. Second operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:56,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:56,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:14:56,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:58,209 INFO L130 PetriNetUnfolder]: 1588/2979 cut-off events. [2022-12-05 20:14:58,209 INFO L131 PetriNetUnfolder]: For 698044/698044 co-relation queries the response was YES. [2022-12-05 20:14:58,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43838 conditions, 2979 events. 1588/2979 cut-off events. For 698044/698044 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 15561 event pairs, 78 based on Foata normal form. 72/3051 useless extension candidates. Maximal degree in co-relation 43702. Up to 1206 conditions per place. [2022-12-05 20:14:58,242 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 130 selfloop transitions, 346 changer transitions 119/595 dead transitions. [2022-12-05 20:14:58,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 595 transitions, 16594 flow [2022-12-05 20:14:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-05 20:14:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-12-05 20:14:58,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 286 transitions. [2022-12-05 20:14:58,244 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2022-12-05 20:14:58,244 INFO L175 Difference]: Start difference. First operand has 316 places, 340 transitions, 6942 flow. Second operand 62 states and 286 transitions. [2022-12-05 20:14:58,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 595 transitions, 16594 flow [2022-12-05 20:14:59,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 595 transitions, 14892 flow, removed 784 selfloop flow, removed 21 redundant places. [2022-12-05 20:14:59,601 INFO L231 Difference]: Finished difference. Result has 377 places, 414 transitions, 9145 flow [2022-12-05 20:14:59,602 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=5516, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=9145, PETRI_PLACES=377, PETRI_TRANSITIONS=414} [2022-12-05 20:14:59,602 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 359 predicate places. [2022-12-05 20:14:59,602 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 414 transitions, 9145 flow [2022-12-05 20:14:59,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:59,603 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:59,603 INFO L213 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:59,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-05 20:14:59,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-05 20:14:59,803 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:14:59,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:59,804 INFO L85 PathProgramCache]: Analyzing trace with hash -818645668, now seen corresponding path program 11 times [2022-12-05 20:14:59,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:59,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143182829] [2022-12-05 20:14:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:59,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:15:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:00,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:15:00,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143182829] [2022-12-05 20:15:00,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143182829] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:15:00,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682314218] [2022-12-05 20:15:00,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 20:15:00,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:15:00,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:15:00,154 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 20:15:00,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-05 20:15:00,221 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-12-05 20:15:00,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 20:15:00,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-05 20:15:00,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:15:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:00,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:15:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:00,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682314218] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:15:00,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:15:00,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 49 [2022-12-05 20:15:00,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693510608] [2022-12-05 20:15:00,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:15:00,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-05 20:15:00,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:15:00,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-05 20:15:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=2129, Unknown=0, NotChecked=0, Total=2550 [2022-12-05 20:15:00,740 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:15:00,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 414 transitions, 9145 flow. Second operand has 51 states, 50 states have (on average 1.26) internal successors, (63), 50 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:15:00,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:15:00,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:15:00,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:15:03,494 INFO L130 PetriNetUnfolder]: 1920/3591 cut-off events. [2022-12-05 20:15:03,494 INFO L131 PetriNetUnfolder]: For 1241138/1241138 co-relation queries the response was YES. [2022-12-05 20:15:03,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61946 conditions, 3591 events. 1920/3591 cut-off events. For 1241138/1241138 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 19141 event pairs, 21 based on Foata normal form. 76/3667 useless extension candidates. Maximal degree in co-relation 61799. Up to 1478 conditions per place. [2022-12-05 20:15:03,529 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 110 selfloop transitions, 469 changer transitions 145/724 dead transitions. [2022-12-05 20:15:03,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 724 transitions, 23008 flow [2022-12-05 20:15:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-12-05 20:15:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-12-05 20:15:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 361 transitions. [2022-12-05 20:15:03,531 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.36538461538461536 [2022-12-05 20:15:03,531 INFO L175 Difference]: Start difference. First operand has 377 places, 414 transitions, 9145 flow. Second operand 76 states and 361 transitions. [2022-12-05 20:15:03,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 724 transitions, 23008 flow [2022-12-05 20:15:05,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 724 transitions, 20144 flow, removed 1251 selfloop flow, removed 23 redundant places. [2022-12-05 20:15:05,965 INFO L231 Difference]: Finished difference. Result has 453 places, 499 transitions, 11960 flow [2022-12-05 20:15:05,966 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=7027, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=11960, PETRI_PLACES=453, PETRI_TRANSITIONS=499} [2022-12-05 20:15:05,966 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 435 predicate places. [2022-12-05 20:15:05,967 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 499 transitions, 11960 flow [2022-12-05 20:15:05,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.26) internal successors, (63), 50 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:15:05,967 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:15:05,967 INFO L213 CegarLoopForPetriNet]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:15:05,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-05 20:15:06,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-05 20:15:06,171 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:15:06,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:15:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash -355060158, now seen corresponding path program 12 times [2022-12-05 20:15:06,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:15:06,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483946313] [2022-12-05 20:15:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:15:06,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:15:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:15:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:06,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:15:06,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483946313] [2022-12-05 20:15:06,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483946313] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:15:06,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086374778] [2022-12-05 20:15:06,561 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-05 20:15:06,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:15:06,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:15:06,563 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 20:15:06,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-05 20:15:06,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-12-05 20:15:06,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 20:15:06,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-05 20:15:06,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:15:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:06,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:15:07,165 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:07,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086374778] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:15:07,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:15:07,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 55 [2022-12-05 20:15:07,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339427112] [2022-12-05 20:15:07,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:15:07,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-12-05 20:15:07,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:15:07,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-12-05 20:15:07,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=750, Invalid=2442, Unknown=0, NotChecked=0, Total=3192 [2022-12-05 20:15:07,168 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:15:07,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 499 transitions, 11960 flow. Second operand has 57 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 56 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:15:07,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:15:07,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:15:07,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:15:10,974 INFO L130 PetriNetUnfolder]: 2352/4387 cut-off events. [2022-12-05 20:15:10,974 INFO L131 PetriNetUnfolder]: For 2310182/2310182 co-relation queries the response was YES. [2022-12-05 20:15:11,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92143 conditions, 4387 events. 2352/4387 cut-off events. For 2310182/2310182 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 23608 event pairs, 22 based on Foata normal form. 72/4459 useless extension candidates. Maximal degree in co-relation 91971. Up to 1830 conditions per place. [2022-12-05 20:15:11,022 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 136 selfloop transitions, 575 changer transitions 168/879 dead transitions. [2022-12-05 20:15:11,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 879 transitions, 34211 flow [2022-12-05 20:15:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-12-05 20:15:11,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2022-12-05 20:15:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 420 transitions. [2022-12-05 20:15:11,024 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3713527851458886 [2022-12-05 20:15:11,024 INFO L175 Difference]: Start difference. First operand has 453 places, 499 transitions, 11960 flow. Second operand 87 states and 420 transitions. [2022-12-05 20:15:11,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 879 transitions, 34211 flow [2022-12-05 20:15:15,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 879 transitions, 27963 flow, removed 2910 selfloop flow, removed 27 redundant places. [2022-12-05 20:15:15,052 INFO L231 Difference]: Finished difference. Result has 547 places, 607 transitions, 16371 flow [2022-12-05 20:15:15,052 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=8746, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=468, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=16371, PETRI_PLACES=547, PETRI_TRANSITIONS=607} [2022-12-05 20:15:15,052 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 529 predicate places. [2022-12-05 20:15:15,052 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 607 transitions, 16371 flow [2022-12-05 20:15:15,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 56 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:15:15,053 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:15:15,053 INFO L213 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:15:15,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-05 20:15:15,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-05 20:15:15,255 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:15:15,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:15:15,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1576068350, now seen corresponding path program 13 times [2022-12-05 20:15:15,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:15:15,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514610809] [2022-12-05 20:15:15,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:15:15,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:15:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:15:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:15,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:15:15,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514610809] [2022-12-05 20:15:15,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514610809] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:15:15,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278463997] [2022-12-05 20:15:15,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-05 20:15:15,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:15:15,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:15:15,953 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 20:15:15,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-05 20:15:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:15:16,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-05 20:15:16,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:15:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:16,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:15:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:16,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278463997] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:15:16,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:15:16,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2022-12-05 20:15:16,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818856186] [2022-12-05 20:15:16,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:15:16,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-05 20:15:16,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:15:16,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-05 20:15:16,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=1613, Unknown=0, NotChecked=0, Total=2070 [2022-12-05 20:15:16,580 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 20:15:16,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 607 transitions, 16371 flow. Second operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:15:16,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:15:16,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 20:15:16,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:15:20,558 INFO L130 PetriNetUnfolder]: 2588/4803 cut-off events. [2022-12-05 20:15:20,558 INFO L131 PetriNetUnfolder]: For 3253344/3253344 co-relation queries the response was YES. [2022-12-05 20:15:20,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115896 conditions, 4803 events. 2588/4803 cut-off events. For 3253344/3253344 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 25955 event pairs, 28 based on Foata normal form. 4/4807 useless extension candidates. Maximal degree in co-relation 115689. Up to 1994 conditions per place. [2022-12-05 20:15:20,632 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 127 selfloop transitions, 622 changer transitions 154/903 dead transitions. [2022-12-05 20:15:20,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 903 transitions, 36120 flow [2022-12-05 20:15:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-05 20:15:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-12-05 20:15:20,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 368 transitions. [2022-12-05 20:15:20,635 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.35384615384615387 [2022-12-05 20:15:20,635 INFO L175 Difference]: Start difference. First operand has 547 places, 607 transitions, 16371 flow. Second operand 80 states and 368 transitions. [2022-12-05 20:15:20,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 903 transitions, 36120 flow [2022-12-05 20:15:29,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 903 transitions, 27415 flow, removed 3999 selfloop flow, removed 48 redundant places. [2022-12-05 20:15:29,029 INFO L231 Difference]: Finished difference. Result has 586 places, 666 transitions, 13888 flow [2022-12-05 20:15:29,030 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=11203, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=563, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=13888, PETRI_PLACES=586, PETRI_TRANSITIONS=666} [2022-12-05 20:15:29,030 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 568 predicate places. [2022-12-05 20:15:29,030 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 666 transitions, 13888 flow [2022-12-05 20:15:29,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:15:29,030 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:15:29,030 INFO L213 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:15:29,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-05 20:15:29,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-05 20:15:29,236 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:15:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:15:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash -649585925, now seen corresponding path program 14 times [2022-12-05 20:15:29,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:15:29,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976227289] [2022-12-05 20:15:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:15:29,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:15:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-05 20:15:29,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-05 20:15:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-05 20:15:29,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-05 20:15:29,289 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-05 20:15:29,290 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-05 20:15:29,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-05 20:15:29,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-05 20:15:29,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-05 20:15:29,292 INFO L458 BasicCegarLoop]: Path program histogram: [14, 2, 1] [2022-12-05 20:15:29,295 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:15:29,295 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:15:29,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:15:29 BasicIcfg [2022-12-05 20:15:29,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:15:29,362 INFO L158 Benchmark]: Toolchain (without parser) took 48543.32ms. Allocated memory was 188.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 163.0MB in the beginning and 528.3MB in the end (delta: -365.3MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2022-12-05 20:15:29,362 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory was 165.8MB in the beginning and 165.7MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:15:29,362 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.14ms. Allocated memory is still 188.7MB. Free memory was 162.9MB in the beginning and 142.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-12-05 20:15:29,362 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.28ms. Allocated memory is still 188.7MB. Free memory was 142.5MB in the beginning and 140.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 20:15:29,362 INFO L158 Benchmark]: Boogie Preprocessor took 30.66ms. Allocated memory is still 188.7MB. Free memory was 140.9MB in the beginning and 139.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:15:29,362 INFO L158 Benchmark]: RCFGBuilder took 345.30ms. Allocated memory is still 188.7MB. Free memory was 139.3MB in the beginning and 126.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-05 20:15:29,362 INFO L158 Benchmark]: TraceAbstraction took 47720.26ms. Allocated memory was 188.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 126.2MB in the beginning and 528.3MB in the end (delta: -402.1MB). Peak memory consumption was 999.9MB. Max. memory is 8.0GB. [2022-12-05 20:15:29,367 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 188.7MB. Free memory was 165.8MB in the beginning and 165.7MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 392.14ms. Allocated memory is still 188.7MB. Free memory was 162.9MB in the beginning and 142.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.28ms. Allocated memory is still 188.7MB. Free memory was 142.5MB in the beginning and 140.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.66ms. Allocated memory is still 188.7MB. Free memory was 140.9MB in the beginning and 139.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 345.30ms. Allocated memory is still 188.7MB. Free memory was 139.3MB in the beginning and 126.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 47720.26ms. Allocated memory was 188.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 126.2MB in the beginning and 528.3MB in the end (delta: -402.1MB). Peak memory consumption was 999.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 66 PlacesBefore, 18 PlacesAfterwards, 64 TransitionsBefore, 13 TransitionsAfterwards, 1078 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 30 ConcurrentYvCompositions, 3 ChoiceCompositions, 51 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 613, independent: 598, independent conditional: 598, independent unconditional: 0, dependent: 15, dependent conditional: 15, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 613, independent: 598, independent conditional: 0, independent unconditional: 598, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 613, independent: 598, independent conditional: 0, independent unconditional: 598, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 613, independent: 598, independent conditional: 0, independent unconditional: 598, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 598, independent: 588, independent conditional: 0, independent unconditional: 588, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 598, independent: 588, independent conditional: 0, independent unconditional: 588, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 26, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 613, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 598, unknown conditional: 0, unknown unconditional: 598] , Statistics on independence cache: Total cache size (in pairs): 1033, Positive cache size: 1023, Positive conditional cache size: 0, Positive unconditional cache size: 1023, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-2] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=-1] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=1, k=0] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=4, k=3] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=10] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=11, k=10] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=15, k=14] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=16, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=18, k=17] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=20] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] [L719] 0 int condJ = j >= (2*20 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, condJ=1, i=45, id1={5:0}, id2={3:0}, j=46, k=20, k=20] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 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: 47.6s, OverallIterations: 17, TraceHistogramMax: 20, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 35.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7069 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7069 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 858 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4089 IncrementalHoareTripleChecker+Invalid, 4947 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 858 mSolverCounterUnsat, 0 mSDtfsCounter, 4089 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1185 GetRequests, 292 SyntacticMatches, 49 SemanticMatches, 844 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24755 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16371occurred in iteration=15, InterpolantAutomatonStates: 554, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 606 NumberOfCodeBlocks, 606 NumberOfCodeBlocksAsserted, 70 NumberOfCheckSat, 778 ConstructedInterpolants, 0 QuantifiedInterpolants, 3344 SizeOfPredicates, 166 NumberOfNonLiveVariables, 2060 ConjunctsInSsa, 236 ConjunctsInUnsatCore, 38 InterpolantComputations, 5 PerfectInterpolantSequences, 12/2688 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-05 20:15:29,389 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...