/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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 11:38:30,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 11:38:30,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 11:38:31,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 11:38:31,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 11:38:31,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 11:38:31,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 11:38:31,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 11:38:31,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 11:38:31,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 11:38:31,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 11:38:31,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 11:38:31,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 11:38:31,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 11:38:31,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 11:38:31,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 11:38:31,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 11:38:31,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 11:38:31,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 11:38:31,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 11:38:31,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 11:38:31,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 11:38:31,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 11:38:31,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 11:38:31,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 11:38:31,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 11:38:31,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 11:38:31,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 11:38:31,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 11:38:31,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 11:38:31,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 11:38:31,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 11:38:31,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 11:38:31,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 11:38:31,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 11:38:31,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 11:38:31,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 11:38:31,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 11:38:31,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 11:38:31,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 11:38:31,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 11:38:31,049 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-NoLbe.epf [2022-12-12 11:38:31,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 11:38:31,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 11:38:31,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 11:38:31,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 11:38:31,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 11:38:31,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 11:38:31,076 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 11:38:31,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 11:38:31,076 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 11:38:31,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 11:38:31,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 11:38:31,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 11:38:31,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 11:38:31,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 11:38:31,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 11:38:31,077 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 11:38:31,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 11:38:31,077 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 11:38:31,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 11:38:31,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 11:38:31,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 11:38:31,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 11:38:31,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 11:38:31,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 11:38:31,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 11:38:31,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 11:38:31,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 11:38:31,078 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 11:38:31,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 11:38:31,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 11:38:31,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 11:38:31,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 11:38:31,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 11:38:31,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 11:38:31,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 11:38:31,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 11:38:31,361 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 11:38:31,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2022-12-12 11:38:32,247 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 11:38:32,476 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 11:38:32,476 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2022-12-12 11:38:32,491 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce980febc/1a29f327454342adb717cc871c94d177/FLAG1faccf4f1 [2022-12-12 11:38:32,822 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce980febc/1a29f327454342adb717cc871c94d177 [2022-12-12 11:38:32,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 11:38:32,824 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 11:38:32,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 11:38:32,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 11:38:32,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 11:38:32,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:38:32" (1/1) ... [2022-12-12 11:38:32,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b123a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:32, skipping insertion in model container [2022-12-12 11:38:32,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:38:32" (1/1) ... [2022-12-12 11:38:32,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 11:38:32,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 11:38:33,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:38:33,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:38:33,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:38:33,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:38:33,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:38:33,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:38:33,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:38:33,100 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:38:33,100 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-longer-1.i[30961,30974] [2022-12-12 11:38:33,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 11:38:33,112 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 11:38:33,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:38:33,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:38:33,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:38:33,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:38:33,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:38:33,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:38:33,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:38:33,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:38:33,151 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-longer-1.i[30961,30974] [2022-12-12 11:38:33,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 11:38:33,181 INFO L208 MainTranslator]: Completed translation [2022-12-12 11:38:33,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33 WrapperNode [2022-12-12 11:38:33,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 11:38:33,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 11:38:33,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 11:38:33,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 11:38:33,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33" (1/1) ... [2022-12-12 11:38:33,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33" (1/1) ... [2022-12-12 11:38:33,230 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-12 11:38:33,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 11:38:33,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 11:38:33,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 11:38:33,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 11:38:33,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33" (1/1) ... [2022-12-12 11:38:33,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33" (1/1) ... [2022-12-12 11:38:33,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33" (1/1) ... [2022-12-12 11:38:33,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33" (1/1) ... [2022-12-12 11:38:33,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33" (1/1) ... [2022-12-12 11:38:33,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33" (1/1) ... [2022-12-12 11:38:33,261 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33" (1/1) ... [2022-12-12 11:38:33,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33" (1/1) ... [2022-12-12 11:38:33,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 11:38:33,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 11:38:33,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 11:38:33,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 11:38:33,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33" (1/1) ... [2022-12-12 11:38:33,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 11:38:33,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:38:33,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 11:38:33,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 11:38:33,357 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-12 11:38:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-12 11:38:33,358 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-12 11:38:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-12 11:38:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 11:38:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 11:38:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 11:38:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 11:38:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 11:38:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 11:38:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 11:38:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 11:38:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 11:38:33,361 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 11:38:33,513 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 11:38:33,515 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 11:38:33,665 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 11:38:33,669 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 11:38:33,669 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 11:38:33,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:38:33 BoogieIcfgContainer [2022-12-12 11:38:33,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 11:38:33,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 11:38:33,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 11:38:33,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 11:38:33,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 11:38:32" (1/3) ... [2022-12-12 11:38:33,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797a4831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:38:33, skipping insertion in model container [2022-12-12 11:38:33,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:33" (2/3) ... [2022-12-12 11:38:33,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797a4831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:38:33, skipping insertion in model container [2022-12-12 11:38:33,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:38:33" (3/3) ... [2022-12-12 11:38:33,677 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2022-12-12 11:38:33,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 11:38:33,689 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 11:38:33,689 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 11:38:33,737 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 11:38:33,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2022-12-12 11:38:33,785 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2022-12-12 11:38:33,785 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 11:38:33,789 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. [2022-12-12 11:38:33,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2022-12-12 11:38:33,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2022-12-12 11:38:33,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 11:38:33,802 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;@6fbaebc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 11:38:33,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 11:38:33,813 INFO L130 PetriNetUnfolder]: 4/54 cut-off events. [2022-12-12 11:38:33,814 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 11:38:33,814 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:33,814 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:33,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:33,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash -869864902, now seen corresponding path program 1 times [2022-12-12 11:38:33,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:33,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235319351] [2022-12-12 11:38:33,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:33,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:34,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:34,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235319351] [2022-12-12 11:38:34,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235319351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:38:34,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:38:34,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 11:38:34,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399407926] [2022-12-12 11:38:34,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:38:34,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 11:38:34,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:34,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 11:38:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 11:38:34,337 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:34,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:34,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:34,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:34,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:34,519 INFO L130 PetriNetUnfolder]: 46/204 cut-off events. [2022-12-12 11:38:34,519 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 11:38:34,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 204 events. 46/204 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 790 event pairs, 3 based on Foata normal form. 49/233 useless extension candidates. Maximal degree in co-relation 259. Up to 32 conditions per place. [2022-12-12 11:38:34,522 INFO L137 encePairwiseOnDemand]: 55/66 looper letters, 14 selfloop transitions, 9 changer transitions 23/88 dead transitions. [2022-12-12 11:38:34,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 88 transitions, 263 flow [2022-12-12 11:38:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 11:38:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 11:38:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 573 transitions. [2022-12-12 11:38:34,541 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8681818181818182 [2022-12-12 11:38:34,544 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2022-12-12 11:38:34,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 88 transitions, 263 flow [2022-12-12 11:38:34,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 88 transitions, 256 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-12 11:38:34,549 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 88 transitions, 256 flow [2022-12-12 11:38:34,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:34,549 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:34,549 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:34,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 11:38:34,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:34,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:34,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1673234708, now seen corresponding path program 1 times [2022-12-12 11:38:34,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:34,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616446122] [2022-12-12 11:38:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:34,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:34,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:34,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616446122] [2022-12-12 11:38:34,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616446122] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:38:34,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:38:34,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 11:38:34,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024430702] [2022-12-12 11:38:34,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:38:34,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 11:38:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:34,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 11:38:34,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 11:38:34,757 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:34,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 88 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:34,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:34,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:34,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:34,846 INFO L130 PetriNetUnfolder]: 46/218 cut-off events. [2022-12-12 11:38:34,847 INFO L131 PetriNetUnfolder]: For 27/55 co-relation queries the response was YES. [2022-12-12 11:38:34,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 218 events. 46/218 cut-off events. For 27/55 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 879 event pairs, 0 based on Foata normal form. 3/203 useless extension candidates. Maximal degree in co-relation 344. Up to 35 conditions per place. [2022-12-12 11:38:34,848 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 19 selfloop transitions, 9 changer transitions 40/110 dead transitions. [2022-12-12 11:38:34,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 110 transitions, 466 flow [2022-12-12 11:38:34,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 11:38:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 11:38:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 443 transitions. [2022-12-12 11:38:34,853 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8390151515151515 [2022-12-12 11:38:34,854 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2022-12-12 11:38:34,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 110 transitions, 466 flow [2022-12-12 11:38:34,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 110 transitions, 438 flow, removed 14 selfloop flow, removed 0 redundant places. [2022-12-12 11:38:34,861 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 110 transitions, 438 flow [2022-12-12 11:38:34,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:34,861 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:34,861 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:34,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 11:38:34,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:34,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:34,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1128844342, now seen corresponding path program 1 times [2022-12-12 11:38:34,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:34,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559016810] [2022-12-12 11:38:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:34,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:35,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:35,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559016810] [2022-12-12 11:38:35,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559016810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:38:35,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:38:35,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 11:38:35,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355624921] [2022-12-12 11:38:35,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:38:35,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 11:38:35,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:35,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 11:38:35,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 11:38:35,035 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:35,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 110 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:35,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:35,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:35,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:35,154 INFO L130 PetriNetUnfolder]: 68/322 cut-off events. [2022-12-12 11:38:35,154 INFO L131 PetriNetUnfolder]: For 124/198 co-relation queries the response was YES. [2022-12-12 11:38:35,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 322 events. 68/322 cut-off events. For 124/198 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1606 event pairs, 0 based on Foata normal form. 26/322 useless extension candidates. Maximal degree in co-relation 594. Up to 44 conditions per place. [2022-12-12 11:38:35,160 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 25 selfloop transitions, 11 changer transitions 60/138 dead transitions. [2022-12-12 11:38:35,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 138 transitions, 768 flow [2022-12-12 11:38:35,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 11:38:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 11:38:35,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 554 transitions. [2022-12-12 11:38:35,161 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8393939393939394 [2022-12-12 11:38:35,162 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2022-12-12 11:38:35,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 138 transitions, 768 flow [2022-12-12 11:38:35,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 138 transitions, 728 flow, removed 20 selfloop flow, removed 0 redundant places. [2022-12-12 11:38:35,166 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 138 transitions, 728 flow [2022-12-12 11:38:35,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:35,167 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:35,167 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:35,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 11:38:35,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:35,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:35,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1724335678, now seen corresponding path program 2 times [2022-12-12 11:38:35,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:35,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055797760] [2022-12-12 11:38:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:35,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:35,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:35,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055797760] [2022-12-12 11:38:35,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055797760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:38:35,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:38:35,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 11:38:35,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260656563] [2022-12-12 11:38:35,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:38:35,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 11:38:35,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:35,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 11:38:35,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 11:38:35,320 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:35,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 138 transitions, 728 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:35,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:35,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:35,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:35,425 INFO L130 PetriNetUnfolder]: 69/330 cut-off events. [2022-12-12 11:38:35,425 INFO L131 PetriNetUnfolder]: For 251/354 co-relation queries the response was YES. [2022-12-12 11:38:35,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 330 events. 69/330 cut-off events. For 251/354 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1689 event pairs, 0 based on Foata normal form. 34/339 useless extension candidates. Maximal degree in co-relation 703. Up to 46 conditions per place. [2022-12-12 11:38:35,426 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 22 selfloop transitions, 12 changer transitions 76/152 dead transitions. [2022-12-12 11:38:35,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 152 transitions, 1040 flow [2022-12-12 11:38:35,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 11:38:35,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 11:38:35,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 492 transitions. [2022-12-12 11:38:35,428 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8282828282828283 [2022-12-12 11:38:35,429 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 30 predicate places. [2022-12-12 11:38:35,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 152 transitions, 1040 flow [2022-12-12 11:38:35,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 152 transitions, 927 flow, removed 53 selfloop flow, removed 2 redundant places. [2022-12-12 11:38:35,432 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 152 transitions, 927 flow [2022-12-12 11:38:35,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:35,432 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:35,433 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:35,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 11:38:35,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:35,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:35,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1294261646, now seen corresponding path program 1 times [2022-12-12 11:38:35,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:35,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578590860] [2022-12-12 11:38:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:35,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:35,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:35,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578590860] [2022-12-12 11:38:35,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578590860] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:38:35,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:38:35,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 11:38:35,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239966441] [2022-12-12 11:38:35,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:38:35,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 11:38:35,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:35,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 11:38:35,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 11:38:35,542 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:35,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 152 transitions, 927 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:35,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:35,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:35,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:35,662 INFO L130 PetriNetUnfolder]: 106/500 cut-off events. [2022-12-12 11:38:35,663 INFO L131 PetriNetUnfolder]: For 381/475 co-relation queries the response was YES. [2022-12-12 11:38:35,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 500 events. 106/500 cut-off events. For 381/475 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2936 event pairs, 0 based on Foata normal form. 34/495 useless extension candidates. Maximal degree in co-relation 1126. Up to 69 conditions per place. [2022-12-12 11:38:35,665 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 26 selfloop transitions, 21 changer transitions 108/197 dead transitions. [2022-12-12 11:38:35,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 197 transitions, 1573 flow [2022-12-12 11:38:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 11:38:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 11:38:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 715 transitions. [2022-12-12 11:38:35,667 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-12-12 11:38:35,669 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 40 predicate places. [2022-12-12 11:38:35,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 197 transitions, 1573 flow [2022-12-12 11:38:35,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 197 transitions, 1412 flow, removed 72 selfloop flow, removed 2 redundant places. [2022-12-12 11:38:35,672 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 197 transitions, 1412 flow [2022-12-12 11:38:35,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:35,673 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:35,673 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:35,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 11:38:35,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:35,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:35,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1658623746, now seen corresponding path program 2 times [2022-12-12 11:38:35,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:35,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708633398] [2022-12-12 11:38:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:35,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:35,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:35,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708633398] [2022-12-12 11:38:35,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708633398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:38:35,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:38:35,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 11:38:35,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432186917] [2022-12-12 11:38:35,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:38:35,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 11:38:35,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:35,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 11:38:35,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 11:38:35,784 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:35,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 197 transitions, 1412 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:35,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:35,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:35,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:35,966 INFO L130 PetriNetUnfolder]: 109/511 cut-off events. [2022-12-12 11:38:35,967 INFO L131 PetriNetUnfolder]: For 535/674 co-relation queries the response was YES. [2022-12-12 11:38:35,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 511 events. 109/511 cut-off events. For 535/674 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3073 event pairs, 0 based on Foata normal form. 54/526 useless extension candidates. Maximal degree in co-relation 1235. Up to 65 conditions per place. [2022-12-12 11:38:35,968 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 25 selfloop transitions, 23 changer transitions 124/214 dead transitions. [2022-12-12 11:38:35,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 214 transitions, 1868 flow [2022-12-12 11:38:35,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 11:38:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 11:38:35,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 707 transitions. [2022-12-12 11:38:35,970 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.824009324009324 [2022-12-12 11:38:35,971 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 50 predicate places. [2022-12-12 11:38:35,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 214 transitions, 1868 flow [2022-12-12 11:38:35,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 214 transitions, 1744 flow, removed 46 selfloop flow, removed 5 redundant places. [2022-12-12 11:38:35,974 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 214 transitions, 1744 flow [2022-12-12 11:38:35,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:35,974 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:35,974 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:35,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 11:38:35,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:35,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1860642807, now seen corresponding path program 1 times [2022-12-12 11:38:35,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:35,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41480213] [2022-12-12 11:38:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:35,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:36,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:36,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41480213] [2022-12-12 11:38:36,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41480213] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 11:38:36,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576477840] [2022-12-12 11:38:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:36,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:36,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:38:36,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 11:38:36,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 11:38:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:36,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 11:38:36,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 11:38:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:36,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 11:38:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:36,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576477840] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 11:38:36,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 11:38:36,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-12-12 11:38:36,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311761385] [2022-12-12 11:38:36,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 11:38:36,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 11:38:36,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:36,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 11:38:36,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-12 11:38:36,440 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:36,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 214 transitions, 1744 flow. Second operand has 13 states, 13 states have (on average 52.61538461538461) internal successors, (684), 13 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:36,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:36,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:36,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:36,729 INFO L130 PetriNetUnfolder]: 177/867 cut-off events. [2022-12-12 11:38:36,729 INFO L131 PetriNetUnfolder]: For 1273/1426 co-relation queries the response was YES. [2022-12-12 11:38:36,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2273 conditions, 867 events. 177/867 cut-off events. For 1273/1426 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5334 event pairs, 0 based on Foata normal form. 55/847 useless extension candidates. Maximal degree in co-relation 2234. Up to 121 conditions per place. [2022-12-12 11:38:36,734 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 43 selfloop transitions, 17 changer transitions 217/319 dead transitions. [2022-12-12 11:38:36,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 319 transitions, 3362 flow [2022-12-12 11:38:36,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-12 11:38:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-12 11:38:36,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1209 transitions. [2022-12-12 11:38:36,738 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8326446280991735 [2022-12-12 11:38:36,738 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 66 predicate places. [2022-12-12 11:38:36,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 319 transitions, 3362 flow [2022-12-12 11:38:36,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 319 transitions, 3115 flow, removed 74 selfloop flow, removed 7 redundant places. [2022-12-12 11:38:36,747 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 319 transitions, 3115 flow [2022-12-12 11:38:36,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.61538461538461) internal successors, (684), 13 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:36,748 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:36,748 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:36,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 11:38:36,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:36,955 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:36,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:36,955 INFO L85 PathProgramCache]: Analyzing trace with hash 508150273, now seen corresponding path program 2 times [2022-12-12 11:38:36,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:36,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054477990] [2022-12-12 11:38:36,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:36,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:37,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:37,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054477990] [2022-12-12 11:38:37,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054477990] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 11:38:37,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54386324] [2022-12-12 11:38:37,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 11:38:37,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:37,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:38:37,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 11:38:37,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 11:38:37,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 11:38:37,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 11:38:37,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 11:38:37,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 11:38:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:37,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 11:38:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:37,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54386324] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 11:38:37,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 11:38:37,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-12-12 11:38:37,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736520675] [2022-12-12 11:38:37,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 11:38:37,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 11:38:37,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:37,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 11:38:37,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-12-12 11:38:37,442 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:37,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 319 transitions, 3115 flow. Second operand has 14 states, 14 states have (on average 52.714285714285715) internal successors, (738), 14 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:37,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:37,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:37,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:37,938 INFO L130 PetriNetUnfolder]: 277/1360 cut-off events. [2022-12-12 11:38:37,939 INFO L131 PetriNetUnfolder]: For 2115/2434 co-relation queries the response was YES. [2022-12-12 11:38:37,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 1360 events. 277/1360 cut-off events. For 2115/2434 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 10220 event pairs, 0 based on Foata normal form. 108/1354 useless extension candidates. Maximal degree in co-relation 3731. Up to 186 conditions per place. [2022-12-12 11:38:37,944 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 49 selfloop transitions, 44 changer transitions 340/475 dead transitions. [2022-12-12 11:38:37,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 475 transitions, 5598 flow [2022-12-12 11:38:37,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 11:38:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 11:38:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1685 transitions. [2022-12-12 11:38:37,948 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8235581622678397 [2022-12-12 11:38:37,948 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 89 predicate places. [2022-12-12 11:38:37,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 475 transitions, 5598 flow [2022-12-12 11:38:37,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 475 transitions, 5126 flow, removed 214 selfloop flow, removed 8 redundant places. [2022-12-12 11:38:37,959 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 475 transitions, 5126 flow [2022-12-12 11:38:37,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 52.714285714285715) internal successors, (738), 14 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:37,960 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:37,960 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:37,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-12 11:38:38,164 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,SelfDestructingSolverStorable7 [2022-12-12 11:38:38,166 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:38,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:38,167 INFO L85 PathProgramCache]: Analyzing trace with hash -418924285, now seen corresponding path program 1 times [2022-12-12 11:38:38,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:38,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513722569] [2022-12-12 11:38:38,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:38,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:38,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:38,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513722569] [2022-12-12 11:38:38,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513722569] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 11:38:38,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395597917] [2022-12-12 11:38:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:38,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:38,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:38:38,256 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 11:38:38,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 11:38:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:38,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 11:38:38,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 11:38:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:38,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 11:38:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:38,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395597917] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 11:38:38,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 11:38:38,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-12-12 11:38:38,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159219358] [2022-12-12 11:38:38,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 11:38:38,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 11:38:38,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:38,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 11:38:38,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-12 11:38:38,497 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:38,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 475 transitions, 5126 flow. Second operand has 15 states, 15 states have (on average 52.46666666666667) internal successors, (787), 15 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:38,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:38,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:38,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:38,980 INFO L130 PetriNetUnfolder]: 446/2188 cut-off events. [2022-12-12 11:38:38,981 INFO L131 PetriNetUnfolder]: For 4051/4322 co-relation queries the response was YES. [2022-12-12 11:38:38,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6333 conditions, 2188 events. 446/2188 cut-off events. For 4051/4322 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 18677 event pairs, 0 based on Foata normal form. 98/2090 useless extension candidates. Maximal degree in co-relation 6294. Up to 331 conditions per place. [2022-12-12 11:38:38,987 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 68 selfloop transitions, 60 changer transitions 545/715 dead transitions. [2022-12-12 11:38:38,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 715 transitions, 9343 flow [2022-12-12 11:38:38,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 11:38:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 11:38:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1746 transitions. [2022-12-12 11:38:38,990 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8267045454545454 [2022-12-12 11:38:38,990 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 112 predicate places. [2022-12-12 11:38:38,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 715 transitions, 9343 flow [2022-12-12 11:38:39,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 715 transitions, 8703 flow, removed 245 selfloop flow, removed 10 redundant places. [2022-12-12 11:38:39,009 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 715 transitions, 8703 flow [2022-12-12 11:38:39,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 52.46666666666667) internal successors, (787), 15 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:39,010 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:39,010 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:39,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 11:38:39,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:39,214 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:39,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:39,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1016870003, now seen corresponding path program 2 times [2022-12-12 11:38:39,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:39,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332254492] [2022-12-12 11:38:39,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:39,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:39,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:39,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332254492] [2022-12-12 11:38:39,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332254492] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 11:38:39,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147325475] [2022-12-12 11:38:39,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 11:38:39,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:39,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:38:39,308 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 11:38:39,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 11:38:39,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 11:38:39,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 11:38:39,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 11:38:39,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 11:38:39,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:39,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 11:38:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:39,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147325475] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 11:38:39,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 11:38:39,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-12-12 11:38:39,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400676916] [2022-12-12 11:38:39,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 11:38:39,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 11:38:39,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:39,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 11:38:39,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-12-12 11:38:39,517 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:39,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 715 transitions, 8703 flow. Second operand has 15 states, 15 states have (on average 52.53333333333333) internal successors, (788), 15 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:39,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:39,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:39,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:40,189 INFO L130 PetriNetUnfolder]: 543/2611 cut-off events. [2022-12-12 11:38:40,189 INFO L131 PetriNetUnfolder]: For 6038/6482 co-relation queries the response was YES. [2022-12-12 11:38:40,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8026 conditions, 2611 events. 543/2611 cut-off events. For 6038/6482 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 23081 event pairs, 0 based on Foata normal form. 160/2548 useless extension candidates. Maximal degree in co-relation 7986. Up to 399 conditions per place. [2022-12-12 11:38:40,200 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 75 selfloop transitions, 85 changer transitions 685/887 dead transitions. [2022-12-12 11:38:40,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 887 transitions, 12285 flow [2022-12-12 11:38:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 11:38:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 11:38:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1901 transitions. [2022-12-12 11:38:40,202 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.822943722943723 [2022-12-12 11:38:40,203 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 136 predicate places. [2022-12-12 11:38:40,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 887 transitions, 12285 flow [2022-12-12 11:38:40,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 887 transitions, 11878 flow, removed 167 selfloop flow, removed 11 redundant places. [2022-12-12 11:38:40,227 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 887 transitions, 11878 flow [2022-12-12 11:38:40,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 52.53333333333333) internal successors, (788), 15 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:40,227 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:40,228 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:40,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 11:38:40,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:40,434 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:40,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:40,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1107162637, now seen corresponding path program 3 times [2022-12-12 11:38:40,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:40,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627935980] [2022-12-12 11:38:40,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:40,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:40,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:40,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627935980] [2022-12-12 11:38:40,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627935980] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 11:38:40,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072997948] [2022-12-12 11:38:40,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 11:38:40,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:40,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:38:40,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 11:38:40,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 11:38:40,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-12 11:38:40,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 11:38:40,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-12 11:38:40,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 11:38:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:40,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 11:38:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:40,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072997948] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 11:38:40,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 11:38:40,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-12-12 11:38:40,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286585336] [2022-12-12 11:38:40,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 11:38:40,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-12 11:38:40,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:40,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-12 11:38:40,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-12-12 11:38:40,875 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:40,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 887 transitions, 11878 flow. Second operand has 23 states, 23 states have (on average 52.391304347826086) internal successors, (1205), 23 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:40,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:40,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:40,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:42,033 INFO L130 PetriNetUnfolder]: 802/3994 cut-off events. [2022-12-12 11:38:42,033 INFO L131 PetriNetUnfolder]: For 11189/11507 co-relation queries the response was YES. [2022-12-12 11:38:42,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12851 conditions, 3994 events. 802/3994 cut-off events. For 11189/11507 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 35588 event pairs, 0 based on Foata normal form. 121/3744 useless extension candidates. Maximal degree in co-relation 12811. Up to 619 conditions per place. [2022-12-12 11:38:42,047 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 100 selfloop transitions, 122 changer transitions 1018/1282 dead transitions. [2022-12-12 11:38:42,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 1282 transitions, 19858 flow [2022-12-12 11:38:42,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-12 11:38:42,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-12 11:38:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 2983 transitions. [2022-12-12 11:38:42,052 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8217630853994491 [2022-12-12 11:38:42,052 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 179 predicate places. [2022-12-12 11:38:42,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 1282 transitions, 19858 flow [2022-12-12 11:38:42,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 1282 transitions, 19270 flow, removed 255 selfloop flow, removed 12 redundant places. [2022-12-12 11:38:42,105 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 1282 transitions, 19270 flow [2022-12-12 11:38:42,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 52.391304347826086) internal successors, (1205), 23 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:42,106 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:42,106 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:42,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-12 11:38:42,311 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,SelfDestructingSolverStorable10 [2022-12-12 11:38:42,312 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:42,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:42,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1519943864, now seen corresponding path program 4 times [2022-12-12 11:38:42,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:42,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484145538] [2022-12-12 11:38:42,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:42,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:42,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:42,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484145538] [2022-12-12 11:38:42,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484145538] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 11:38:42,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368972005] [2022-12-12 11:38:42,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 11:38:42,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:42,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:38:42,673 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) [2022-12-12 11:38:42,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 11:38:42,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 11:38:42,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 11:38:42,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 11:38:42,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 11:38:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:42,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 11:38:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:43,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368972005] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 11:38:43,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 11:38:43,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2022-12-12 11:38:43,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734036980] [2022-12-12 11:38:43,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 11:38:43,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-12 11:38:43,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:43,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-12 11:38:43,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2022-12-12 11:38:43,238 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:43,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 1282 transitions, 19270 flow. Second operand has 27 states, 27 states have (on average 52.2962962962963) internal successors, (1412), 27 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:43,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:43,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:43,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:44,653 INFO L130 PetriNetUnfolder]: 1234/6177 cut-off events. [2022-12-12 11:38:44,653 INFO L131 PetriNetUnfolder]: For 21711/22191 co-relation queries the response was YES. [2022-12-12 11:38:44,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21104 conditions, 6177 events. 1234/6177 cut-off events. For 21711/22191 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 58224 event pairs, 0 based on Foata normal form. 152/5746 useless extension candidates. Maximal degree in co-relation 21063. Up to 979 conditions per place. [2022-12-12 11:38:44,677 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 188 selfloop transitions, 98 changer transitions 1618/1946 dead transitions. [2022-12-12 11:38:44,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 1946 transitions, 33132 flow [2022-12-12 11:38:44,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-12 11:38:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-12 11:38:44,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 2941 transitions. [2022-12-12 11:38:44,687 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8251964085297419 [2022-12-12 11:38:44,688 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 220 predicate places. [2022-12-12 11:38:44,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 1946 transitions, 33132 flow [2022-12-12 11:38:44,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 1946 transitions, 31942 flow, removed 440 selfloop flow, removed 21 redundant places. [2022-12-12 11:38:44,767 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 1946 transitions, 31942 flow [2022-12-12 11:38:44,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 52.2962962962963) internal successors, (1412), 27 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:44,768 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:44,768 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:44,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-12 11:38:44,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:44,975 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:44,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1682027106, now seen corresponding path program 5 times [2022-12-12 11:38:44,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:44,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118211827] [2022-12-12 11:38:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:45,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:45,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118211827] [2022-12-12 11:38:45,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118211827] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 11:38:45,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597406193] [2022-12-12 11:38:45,287 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 11:38:45,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:45,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:38:45,288 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) [2022-12-12 11:38:45,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 11:38:45,350 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-12-12 11:38:45,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 11:38:45,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 11:38:45,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 11:38:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:45,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 11:38:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:45,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597406193] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 11:38:45,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 11:38:45,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 31 [2022-12-12 11:38:45,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566207942] [2022-12-12 11:38:45,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 11:38:45,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-12 11:38:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:45,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-12 11:38:45,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-12-12 11:38:45,897 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:45,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 1946 transitions, 31942 flow. Second operand has 31 states, 31 states have (on average 52.29032258064516) internal successors, (1621), 31 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:45,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:45,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:45,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:48,262 INFO L130 PetriNetUnfolder]: 1694/8411 cut-off events. [2022-12-12 11:38:48,262 INFO L131 PetriNetUnfolder]: For 35592/36757 co-relation queries the response was YES. [2022-12-12 11:38:48,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30042 conditions, 8411 events. 1694/8411 cut-off events. For 35592/36757 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 84089 event pairs, 0 based on Foata normal form. 367/8005 useless extension candidates. Maximal degree in co-relation 29999. Up to 1265 conditions per place. [2022-12-12 11:38:48,289 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 203 selfloop transitions, 186 changer transitions 2230/2661 dead transitions. [2022-12-12 11:38:48,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 2661 transitions, 47768 flow [2022-12-12 11:38:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-12 11:38:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-12-12 11:38:48,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 3360 transitions. [2022-12-12 11:38:48,291 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8211143695014663 [2022-12-12 11:38:48,292 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 260 predicate places. [2022-12-12 11:38:48,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 2661 transitions, 47768 flow [2022-12-12 11:38:48,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 2661 transitions, 46780 flow, removed 405 selfloop flow, removed 18 redundant places. [2022-12-12 11:38:48,458 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 2661 transitions, 46780 flow [2022-12-12 11:38:48,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 52.29032258064516) internal successors, (1621), 31 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:48,458 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:48,459 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:48,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 11:38:48,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:48,663 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:48,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:48,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2062874332, now seen corresponding path program 6 times [2022-12-12 11:38:48,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:48,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882247485] [2022-12-12 11:38:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:48,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:48,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:48,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882247485] [2022-12-12 11:38:48,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882247485] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 11:38:48,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540766969] [2022-12-12 11:38:48,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 11:38:48,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:48,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:38:48,962 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) [2022-12-12 11:38:48,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 11:38:49,045 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-12-12 11:38:49,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 11:38:49,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 11:38:49,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 11:38:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:49,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 11:38:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:49,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540766969] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 11:38:49,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 11:38:49,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 32 [2022-12-12 11:38:49,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465527677] [2022-12-12 11:38:49,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 11:38:49,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-12 11:38:49,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:49,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-12 11:38:49,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2022-12-12 11:38:49,463 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:49,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 2661 transitions, 46780 flow. Second operand has 32 states, 32 states have (on average 52.28125) internal successors, (1673), 32 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:49,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:49,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:49,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:52,535 INFO L130 PetriNetUnfolder]: 1892/9439 cut-off events. [2022-12-12 11:38:52,535 INFO L131 PetriNetUnfolder]: For 45772/46626 co-relation queries the response was YES. [2022-12-12 11:38:52,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35400 conditions, 9439 events. 1892/9439 cut-off events. For 45772/46626 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 97290 event pairs, 0 based on Foata normal form. 292/8846 useless extension candidates. Maximal degree in co-relation 35357. Up to 1366 conditions per place. [2022-12-12 11:38:52,566 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 209 selfloop transitions, 244 changer transitions 2473/2968 dead transitions. [2022-12-12 11:38:52,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 2968 transitions, 56941 flow [2022-12-12 11:38:52,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-12 11:38:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-12-12 11:38:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 3685 transitions. [2022-12-12 11:38:52,569 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.821078431372549 [2022-12-12 11:38:52,570 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 309 predicate places. [2022-12-12 11:38:52,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 2968 transitions, 56941 flow [2022-12-12 11:38:52,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 2968 transitions, 55468 flow, removed 440 selfloop flow, removed 27 redundant places. [2022-12-12 11:38:52,760 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 2968 transitions, 55468 flow [2022-12-12 11:38:52,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 52.28125) internal successors, (1673), 32 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:52,761 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:52,761 INFO L214 CegarLoopForPetriNet]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:52,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-12 11:38:52,965 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,SelfDestructingSolverStorable13 [2022-12-12 11:38:52,966 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:52,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:52,966 INFO L85 PathProgramCache]: Analyzing trace with hash -709973654, now seen corresponding path program 7 times [2022-12-12 11:38:52,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:52,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225298927] [2022-12-12 11:38:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:52,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:53,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:53,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225298927] [2022-12-12 11:38:53,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225298927] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 11:38:53,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389605301] [2022-12-12 11:38:53,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 11:38:53,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:53,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:38:53,268 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) [2022-12-12 11:38:53,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 11:38:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:53,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-12 11:38:53,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 11:38:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:53,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 11:38:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:53,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389605301] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 11:38:53,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 11:38:53,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 30 [2022-12-12 11:38:53,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767148327] [2022-12-12 11:38:53,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 11:38:53,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-12 11:38:53,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:53,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-12 11:38:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-12-12 11:38:53,721 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:53,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 2968 transitions, 55468 flow. Second operand has 30 states, 30 states have (on average 52.3) internal successors, (1569), 30 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:53,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:53,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:53,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:38:57,249 INFO L130 PetriNetUnfolder]: 2249/11238 cut-off events. [2022-12-12 11:38:57,249 INFO L131 PetriNetUnfolder]: For 62331/63619 co-relation queries the response was YES. [2022-12-12 11:38:57,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44198 conditions, 11238 events. 2249/11238 cut-off events. For 62331/63619 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 117699 event pairs, 0 based on Foata normal form. 493/10679 useless extension candidates. Maximal degree in co-relation 44154. Up to 1611 conditions per place. [2022-12-12 11:38:57,292 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 244 selfloop transitions, 280 changer transitions 2937/3503 dead transitions. [2022-12-12 11:38:57,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 3503 transitions, 71802 flow [2022-12-12 11:38:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-12 11:38:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-12-12 11:38:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 4337 transitions. [2022-12-12 11:38:57,296 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8214015151515152 [2022-12-12 11:38:57,296 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 361 predicate places. [2022-12-12 11:38:57,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 3503 transitions, 71802 flow [2022-12-12 11:38:57,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 3503 transitions, 67110 flow, removed 1476 selfloop flow, removed 53 redundant places. [2022-12-12 11:38:57,690 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 3503 transitions, 67110 flow [2022-12-12 11:38:57,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 52.3) internal successors, (1569), 30 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:57,691 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:57,691 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:38:57,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 11:38:57,891 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,SelfDestructingSolverStorable14 [2022-12-12 11:38:57,892 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:57,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:57,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1444657221, now seen corresponding path program 8 times [2022-12-12 11:38:57,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:57,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975151051] [2022-12-12 11:38:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:57,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:38:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:58,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:38:58,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975151051] [2022-12-12 11:38:58,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975151051] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 11:38:58,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341985972] [2022-12-12 11:38:58,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 11:38:58,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:38:58,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:38:58,264 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) [2022-12-12 11:38:58,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 11:38:58,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 11:38:58,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 11:38:58,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-12 11:38:58,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 11:38:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:58,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 11:38:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:38:58,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341985972] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 11:38:58,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 11:38:58,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2022-12-12 11:38:58,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877564105] [2022-12-12 11:38:58,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 11:38:58,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 11:38:58,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:38:58,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 11:38:58,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2022-12-12 11:38:58,685 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-12 11:38:58,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 3503 transitions, 67110 flow. Second operand has 26 states, 26 states have (on average 52.15384615384615) internal successors, (1356), 26 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:38:58,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:38:58,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-12 11:38:58,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:39:02,377 INFO L130 PetriNetUnfolder]: 2314/11551 cut-off events. [2022-12-12 11:39:02,377 INFO L131 PetriNetUnfolder]: For 66885/67948 co-relation queries the response was YES. [2022-12-12 11:39:02,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46368 conditions, 11551 events. 2314/11551 cut-off events. For 66885/67948 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 121241 event pairs, 0 based on Foata normal form. 346/10815 useless extension candidates. Maximal degree in co-relation 46323. Up to 1640 conditions per place. [2022-12-12 11:39:02,415 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 271 selfloop transitions, 276 changer transitions 3015/3604 dead transitions. [2022-12-12 11:39:02,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 3604 transitions, 75599 flow [2022-12-12 11:39:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-12 11:39:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-12-12 11:39:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 3569 transitions. [2022-12-12 11:39:02,417 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8193296602387512 [2022-12-12 11:39:02,417 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 373 predicate places. [2022-12-12 11:39:02,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 3604 transitions, 75599 flow [2022-12-12 11:39:02,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 3604 transitions, 70400 flow, removed 1608 selfloop flow, removed 50 redundant places. [2022-12-12 11:39:02,717 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 3604 transitions, 70400 flow [2022-12-12 11:39:02,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 52.15384615384615) internal successors, (1356), 26 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:39:02,718 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:39:02,718 INFO L214 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:39:02,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 11:39:02,918 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,SelfDestructingSolverStorable15 [2022-12-12 11:39:02,919 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:39:02,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:39:02,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1969483385, now seen corresponding path program 9 times [2022-12-12 11:39:02,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:39:02,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480906728] [2022-12-12 11:39:02,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:39:02,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:39:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:39:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 347 proven. 86 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 11:39:03,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:39:03,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480906728] [2022-12-12 11:39:03,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480906728] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 11:39:03,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977169857] [2022-12-12 11:39:03,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 11:39:03,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 11:39:03,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:39:03,228 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) [2022-12-12 11:39:03,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 11:39:03,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-12 11:39:03,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 11:39:03,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-12 11:39:03,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 11:39:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 11:39:03,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 11:39:03,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977169857] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:39:03,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 11:39:03,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2022-12-12 11:39:03,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088517380] [2022-12-12 11:39:03,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:39:03,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-12 11:39:03,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:39:03,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-12 11:39:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-12-12 11:39:03,441 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 66 [2022-12-12 11:39:03,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 3604 transitions, 70400 flow. Second operand has 23 states, 23 states have (on average 55.91304347826087) internal successors, (1286), 23 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:39:03,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:39:03,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 66 [2022-12-12 11:39:03,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:39:17,008 INFO L130 PetriNetUnfolder]: 10513/43798 cut-off events. [2022-12-12 11:39:17,008 INFO L131 PetriNetUnfolder]: For 203827/206564 co-relation queries the response was YES. [2022-12-12 11:39:17,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177626 conditions, 43798 events. 10513/43798 cut-off events. For 203827/206564 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 595638 event pairs, 1 based on Foata normal form. 132/39959 useless extension candidates. Maximal degree in co-relation 177582. Up to 6556 conditions per place. [2022-12-12 11:39:17,242 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 0 selfloop transitions, 0 changer transitions 3179/3179 dead transitions. [2022-12-12 11:39:17,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 3179 transitions, 60313 flow [2022-12-12 11:39:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 11:39:17,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 11:39:17,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1868 transitions. [2022-12-12 11:39:17,244 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8576675849403123 [2022-12-12 11:39:17,244 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 350 predicate places. [2022-12-12 11:39:17,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 3179 transitions, 60313 flow [2022-12-12 11:39:19,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 3179 transitions, 59454 flow, removed 264 selfloop flow, removed 7 redundant places. [2022-12-12 11:39:19,630 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 3179 transitions, 59454 flow [2022-12-12 11:39:19,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 55.91304347826087) internal successors, (1286), 23 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:39:19,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 11:39:19,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 11:39:19,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 11:39:19,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 11:39:19,833 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,SelfDestructingSolverStorable16 [2022-12-12 11:39:19,833 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 2, 2, 1, 1] [2022-12-12 11:39:19,844 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 11:39:19,844 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 11:39:19,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 11:39:19 BasicIcfg [2022-12-12 11:39:19,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 11:39:19,847 INFO L158 Benchmark]: Toolchain (without parser) took 47023.05ms. Allocated memory was 180.4MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 154.8MB in the beginning and 767.9MB in the end (delta: -613.1MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2022-12-12 11:39:19,848 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory was 156.9MB in the beginning and 156.8MB in the end (delta: 99.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 11:39:19,848 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.69ms. Allocated memory is still 180.4MB. Free memory was 154.5MB in the beginning and 134.6MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-12 11:39:19,848 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.62ms. Allocated memory is still 180.4MB. Free memory was 134.6MB in the beginning and 132.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 11:39:19,848 INFO L158 Benchmark]: Boogie Preprocessor took 32.73ms. Allocated memory is still 180.4MB. Free memory was 132.5MB in the beginning and 131.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 11:39:19,848 INFO L158 Benchmark]: RCFGBuilder took 406.44ms. Allocated memory is still 180.4MB. Free memory was 131.1MB in the beginning and 156.4MB in the end (delta: -25.3MB). Peak memory consumption was 15.5MB. Max. memory is 8.0GB. [2022-12-12 11:39:19,848 INFO L158 Benchmark]: TraceAbstraction took 46175.14ms. Allocated memory was 180.4MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 155.3MB in the beginning and 767.9MB in the end (delta: -612.5MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2022-12-12 11:39:19,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory was 156.9MB in the beginning and 156.8MB in the end (delta: 99.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 357.69ms. Allocated memory is still 180.4MB. Free memory was 154.5MB in the beginning and 134.6MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.62ms. Allocated memory is still 180.4MB. Free memory was 134.6MB in the beginning and 132.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.73ms. Allocated memory is still 180.4MB. Free memory was 132.5MB in the beginning and 131.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 406.44ms. Allocated memory is still 180.4MB. Free memory was 131.1MB in the beginning and 156.4MB in the end (delta: -25.3MB). Peak memory consumption was 15.5MB. Max. memory is 8.0GB. * TraceAbstraction took 46175.14ms. Allocated memory was 180.4MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 155.3MB in the beginning and 767.9MB in the end (delta: -612.5MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 3.7s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 46.1s, OverallIterations: 17, TraceHistogramMax: 11, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 32.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3500 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3500 mSDsluCounter, 292 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 207 mSDsCounter, 463 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3109 IncrementalHoareTripleChecker+Invalid, 3572 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 463 mSolverCounterUnsat, 85 mSDtfsCounter, 3109 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2426 GetRequests, 1627 SyntacticMatches, 54 SemanticMatches, 745 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16766 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70400occurred in iteration=16, InterpolantAutomatonStates: 601, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 17 MinimizatonAttempts, 17228 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 2100 NumberOfCodeBlocks, 2100 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 2867 ConstructedInterpolants, 0 QuantifiedInterpolants, 10502 SizeOfPredicates, 131 NumberOfNonLiveVariables, 2175 ConjunctsInSsa, 184 ConjunctsInUnsatCore, 38 InterpolantComputations, 7 PerfectInterpolantSequences, 800/4627 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 11:39:19,863 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...