./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 11:54:12,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 11:54:12,230 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 11:54:12,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 11:54:12,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 11:54:12,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 11:54:12,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 11:54:12,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 11:54:12,260 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 11:54:12,263 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 11:54:12,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 11:54:12,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 11:54:12,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 11:54:12,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 11:54:12,266 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 11:54:12,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 11:54:12,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 11:54:12,266 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 11:54:12,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 11:54:12,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 11:54:12,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 11:54:12,268 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 11:54:12,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 11:54:12,269 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 11:54:12,269 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 11:54:12,269 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 11:54:12,269 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 11:54:12,270 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 11:54:12,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 11:54:12,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 11:54:12,271 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 11:54:12,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 11:54:12,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:54:12,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 11:54:12,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 11:54:12,272 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 11:54:12,272 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 11:54:12,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 11:54:12,273 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 11:54:12,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 11:54:12,273 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 11:54:12,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 11:54:12,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 11:54:12,274 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 11:54:12,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 11:54:12,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 11:54:12,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 11:54:12,564 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 11:54:12,564 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 11:54:12,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2024-02-20 11:54:13,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 11:54:13,856 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 11:54:13,856 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2024-02-20 11:54:13,877 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16fe470a5/ec87c85b33b445fd800b470dccac3893/FLAGa9b4e3f3a [2024-02-20 11:54:13,892 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16fe470a5/ec87c85b33b445fd800b470dccac3893 [2024-02-20 11:54:13,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 11:54:13,895 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 11:54:13,897 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 11:54:13,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 11:54:13,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 11:54:13,902 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:54:13" (1/1) ... [2024-02-20 11:54:13,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f095b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:13, skipping insertion in model container [2024-02-20 11:54:13,903 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:54:13" (1/1) ... [2024-02-20 11:54:13,921 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 11:54:14,073 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c[2330,2343] [2024-02-20 11:54:14,079 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:54:14,085 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 11:54:14,100 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c[2330,2343] [2024-02-20 11:54:14,102 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:54:14,114 INFO L206 MainTranslator]: Completed translation [2024-02-20 11:54:14,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14 WrapperNode [2024-02-20 11:54:14,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 11:54:14,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 11:54:14,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 11:54:14,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 11:54:14,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (1/1) ... [2024-02-20 11:54:14,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (1/1) ... [2024-02-20 11:54:14,144 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 170 [2024-02-20 11:54:14,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 11:54:14,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 11:54:14,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 11:54:14,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 11:54:14,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (1/1) ... [2024-02-20 11:54:14,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (1/1) ... [2024-02-20 11:54:14,156 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (1/1) ... [2024-02-20 11:54:14,174 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-20 11:54:14,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (1/1) ... [2024-02-20 11:54:14,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (1/1) ... [2024-02-20 11:54:14,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (1/1) ... [2024-02-20 11:54:14,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (1/1) ... [2024-02-20 11:54:14,186 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (1/1) ... [2024-02-20 11:54:14,187 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (1/1) ... [2024-02-20 11:54:14,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 11:54:14,190 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 11:54:14,190 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 11:54:14,190 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 11:54:14,191 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (1/1) ... [2024-02-20 11:54:14,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:54:14,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:14,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-20 11:54:14,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-20 11:54:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 11:54:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 11:54:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 11:54:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 11:54:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 11:54:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 11:54:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 11:54:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 11:54:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 11:54:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 11:54:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 11:54:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 11:54:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 11:54:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 11:54:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 11:54:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 11:54:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 11:54:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 11:54:14,268 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 11:54:14,383 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 11:54:14,384 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 11:54:14,588 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 11:54:14,588 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 11:54:14,782 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 11:54:14,782 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-20 11:54:14,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:54:14 BoogieIcfgContainer [2024-02-20 11:54:14,783 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 11:54:14,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 11:54:14,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 11:54:14,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 11:54:14,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 11:54:13" (1/3) ... [2024-02-20 11:54:14,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a86a51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:54:14, skipping insertion in model container [2024-02-20 11:54:14,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:54:14" (2/3) ... [2024-02-20 11:54:14,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a86a51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:54:14, skipping insertion in model container [2024-02-20 11:54:14,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:54:14" (3/3) ... [2024-02-20 11:54:14,789 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-02-20 11:54:14,803 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 11:54:14,803 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 11:54:14,803 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 11:54:14,840 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-20 11:54:14,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 52 flow [2024-02-20 11:54:14,900 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-02-20 11:54:14,900 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 11:54:14,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-02-20 11:54:14,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 19 transitions, 52 flow [2024-02-20 11:54:14,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 16 transitions, 44 flow [2024-02-20 11:54:14,911 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:54:14,919 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3b48f8f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:54:14,919 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-20 11:54:14,936 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:54:14,936 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-02-20 11:54:14,936 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 11:54:14,936 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:14,937 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:14,937 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:14,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash -576020546, now seen corresponding path program 1 times [2024-02-20 11:54:14,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:14,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197979942] [2024-02-20 11:54:14,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:14,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:15,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:15,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197979942] [2024-02-20 11:54:15,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197979942] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:15,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:15,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 11:54:15,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247886301] [2024-02-20 11:54:15,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:15,476 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:15,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:15,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:15,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:15,506 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:54:15,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:15,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:15,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:54:15,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:15,636 INFO L124 PetriNetUnfolderBase]: 64/120 cut-off events. [2024-02-20 11:54:15,636 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-02-20 11:54:15,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 120 events. 64/120 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 330 event pairs, 1 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 194. Up to 85 conditions per place. [2024-02-20 11:54:15,638 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 23 selfloop transitions, 5 changer transitions 5/36 dead transitions. [2024-02-20 11:54:15,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 36 transitions, 168 flow [2024-02-20 11:54:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-02-20 11:54:15,647 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6210526315789474 [2024-02-20 11:54:15,649 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 4 predicate places. [2024-02-20 11:54:15,649 INFO L507 AbstractCegarLoop]: Abstraction has has 25 places, 36 transitions, 168 flow [2024-02-20 11:54:15,650 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:15,650 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:15,650 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:15,650 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 11:54:15,650 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:15,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:15,651 INFO L85 PathProgramCache]: Analyzing trace with hash 295886624, now seen corresponding path program 2 times [2024-02-20 11:54:15,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:15,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299854648] [2024-02-20 11:54:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:15,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:15,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299854648] [2024-02-20 11:54:15,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299854648] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:15,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:15,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 11:54:15,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140720946] [2024-02-20 11:54:15,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:15,772 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:15,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:15,773 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:54:15,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 36 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:15,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:15,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:54:15,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:15,882 INFO L124 PetriNetUnfolderBase]: 64/118 cut-off events. [2024-02-20 11:54:15,883 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-02-20 11:54:15,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 118 events. 64/118 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 317 event pairs, 0 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 287. Up to 85 conditions per place. [2024-02-20 11:54:15,886 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 22 selfloop transitions, 6 changer transitions 10/41 dead transitions. [2024-02-20 11:54:15,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 267 flow [2024-02-20 11:54:15,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:15,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-02-20 11:54:15,889 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6105263157894737 [2024-02-20 11:54:15,889 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 8 predicate places. [2024-02-20 11:54:15,890 INFO L507 AbstractCegarLoop]: Abstraction has has 29 places, 41 transitions, 267 flow [2024-02-20 11:54:15,890 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:15,890 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:15,890 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:15,890 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 11:54:15,891 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:15,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:15,893 INFO L85 PathProgramCache]: Analyzing trace with hash -676034657, now seen corresponding path program 1 times [2024-02-20 11:54:15,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:15,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312072573] [2024-02-20 11:54:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:15,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:15,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:15,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312072573] [2024-02-20 11:54:15,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312072573] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:15,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:15,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:54:15,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865951617] [2024-02-20 11:54:15,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:15,981 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:15,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:15,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:15,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:15,983 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:15,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 41 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:15,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:15,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:15,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:16,081 INFO L124 PetriNetUnfolderBase]: 92/177 cut-off events. [2024-02-20 11:54:16,081 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2024-02-20 11:54:16,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 177 events. 92/177 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 575 event pairs, 11 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 550. Up to 99 conditions per place. [2024-02-20 11:54:16,084 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 41 selfloop transitions, 6 changer transitions 17/65 dead transitions. [2024-02-20 11:54:16,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 65 transitions, 543 flow [2024-02-20 11:54:16,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2024-02-20 11:54:16,087 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2024-02-20 11:54:16,088 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 12 predicate places. [2024-02-20 11:54:16,089 INFO L507 AbstractCegarLoop]: Abstraction has has 33 places, 65 transitions, 543 flow [2024-02-20 11:54:16,089 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:16,089 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:16,089 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:16,089 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-20 11:54:16,089 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:16,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:16,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1808939077, now seen corresponding path program 2 times [2024-02-20 11:54:16,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:16,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206729783] [2024-02-20 11:54:16,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:16,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:16,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:16,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206729783] [2024-02-20 11:54:16,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206729783] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:16,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:16,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:54:16,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238642283] [2024-02-20 11:54:16,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:16,156 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:16,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:16,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:16,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:16,161 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:16,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 65 transitions, 543 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:16,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:16,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:16,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:16,240 INFO L124 PetriNetUnfolderBase]: 116/213 cut-off events. [2024-02-20 11:54:16,240 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-02-20 11:54:16,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 213 events. 116/213 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 694 event pairs, 8 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 879. Up to 168 conditions per place. [2024-02-20 11:54:16,244 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 49 selfloop transitions, 13 changer transitions 26/89 dead transitions. [2024-02-20 11:54:16,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 89 transitions, 916 flow [2024-02-20 11:54:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:16,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:16,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-02-20 11:54:16,246 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-02-20 11:54:16,247 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 16 predicate places. [2024-02-20 11:54:16,248 INFO L507 AbstractCegarLoop]: Abstraction has has 37 places, 89 transitions, 916 flow [2024-02-20 11:54:16,248 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:16,248 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:16,248 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:16,248 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-20 11:54:16,248 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:16,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:16,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2126201748, now seen corresponding path program 1 times [2024-02-20 11:54:16,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:16,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169499923] [2024-02-20 11:54:16,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:16,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:16,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169499923] [2024-02-20 11:54:16,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169499923] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:16,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:16,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:54:16,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939109487] [2024-02-20 11:54:16,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:16,316 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:16,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:16,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:16,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:16,318 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:16,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 89 transitions, 916 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:16,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:16,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:16,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:16,389 INFO L124 PetriNetUnfolderBase]: 124/227 cut-off events. [2024-02-20 11:54:16,389 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-02-20 11:54:16,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 227 events. 124/227 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 750 event pairs, 4 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 1147. Up to 174 conditions per place. [2024-02-20 11:54:16,391 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 61 selfloop transitions, 11 changer transitions 26/99 dead transitions. [2024-02-20 11:54:16,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 99 transitions, 1211 flow [2024-02-20 11:54:16,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:16,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-02-20 11:54:16,391 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-02-20 11:54:16,392 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2024-02-20 11:54:16,392 INFO L507 AbstractCegarLoop]: Abstraction has has 41 places, 99 transitions, 1211 flow [2024-02-20 11:54:16,392 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:16,392 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:16,392 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:16,392 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-20 11:54:16,393 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:16,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:16,393 INFO L85 PathProgramCache]: Analyzing trace with hash -491751468, now seen corresponding path program 2 times [2024-02-20 11:54:16,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:16,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619340037] [2024-02-20 11:54:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:16,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:16,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:16,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619340037] [2024-02-20 11:54:16,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619340037] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:16,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:16,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:54:16,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110027232] [2024-02-20 11:54:16,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:16,432 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:16,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:16,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:16,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:16,433 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:16,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 99 transitions, 1211 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:16,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:16,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:16,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:16,509 INFO L124 PetriNetUnfolderBase]: 127/241 cut-off events. [2024-02-20 11:54:16,509 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-02-20 11:54:16,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1657 conditions, 241 events. 127/241 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 818 event pairs, 8 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 1422. Up to 187 conditions per place. [2024-02-20 11:54:16,511 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 65 selfloop transitions, 12 changer transitions 31/109 dead transitions. [2024-02-20 11:54:16,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 109 transitions, 1549 flow [2024-02-20 11:54:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2024-02-20 11:54:16,512 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-02-20 11:54:16,512 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 24 predicate places. [2024-02-20 11:54:16,512 INFO L507 AbstractCegarLoop]: Abstraction has has 45 places, 109 transitions, 1549 flow [2024-02-20 11:54:16,512 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:16,512 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:16,513 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:16,513 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-20 11:54:16,513 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:16,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:16,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1397939249, now seen corresponding path program 3 times [2024-02-20 11:54:16,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:16,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794694543] [2024-02-20 11:54:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:16,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:16,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:16,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794694543] [2024-02-20 11:54:16,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794694543] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:16,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315750369] [2024-02-20 11:54:16,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:54:16,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:16,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:16,556 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) [2024-02-20 11:54:16,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-20 11:54:16,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:54:16,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:16,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-20 11:54:16,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:16,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:16,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315750369] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:16,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:16,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-02-20 11:54:16,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815437036] [2024-02-20 11:54:16,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:16,693 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:54:16,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:16,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:54:16,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-20 11:54:16,695 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:16,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 109 transitions, 1549 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:16,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:16,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:16,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:16,794 INFO L124 PetriNetUnfolderBase]: 133/251 cut-off events. [2024-02-20 11:54:16,794 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-02-20 11:54:16,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1976 conditions, 251 events. 133/251 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 884 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 1710. Up to 197 conditions per place. [2024-02-20 11:54:16,796 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 81 selfloop transitions, 21 changer transitions 31/134 dead transitions. [2024-02-20 11:54:16,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 134 transitions, 2166 flow [2024-02-20 11:54:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:54:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:54:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-02-20 11:54:16,797 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-02-20 11:54:16,798 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 30 predicate places. [2024-02-20 11:54:16,798 INFO L507 AbstractCegarLoop]: Abstraction has has 51 places, 134 transitions, 2166 flow [2024-02-20 11:54:16,798 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:16,798 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:16,798 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:16,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-20 11:54:17,033 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:17,036 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:17,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:17,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1696030709, now seen corresponding path program 4 times [2024-02-20 11:54:17,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:17,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934696938] [2024-02-20 11:54:17,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:17,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:17,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:17,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934696938] [2024-02-20 11:54:17,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934696938] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:17,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:17,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:54:17,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552225603] [2024-02-20 11:54:17,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:17,077 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:17,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:17,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:17,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:17,078 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:17,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 134 transitions, 2166 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:17,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:17,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:17,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:17,140 INFO L124 PetriNetUnfolderBase]: 129/247 cut-off events. [2024-02-20 11:54:17,140 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-02-20 11:54:17,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 247 events. 129/247 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 875 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 1892. Up to 199 conditions per place. [2024-02-20 11:54:17,142 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 80 selfloop transitions, 17 changer transitions 35/133 dead transitions. [2024-02-20 11:54:17,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 133 transitions, 2414 flow [2024-02-20 11:54:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-02-20 11:54:17,143 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-02-20 11:54:17,144 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 34 predicate places. [2024-02-20 11:54:17,144 INFO L507 AbstractCegarLoop]: Abstraction has has 55 places, 133 transitions, 2414 flow [2024-02-20 11:54:17,144 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:17,144 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:17,144 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:17,144 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-20 11:54:17,144 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:17,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:17,145 INFO L85 PathProgramCache]: Analyzing trace with hash 286550258, now seen corresponding path program 3 times [2024-02-20 11:54:17,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:17,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562965686] [2024-02-20 11:54:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:17,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:17,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:17,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562965686] [2024-02-20 11:54:17,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562965686] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:17,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:17,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:54:17,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932031061] [2024-02-20 11:54:17,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:17,220 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:17,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:17,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:17,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:17,223 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:17,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 133 transitions, 2414 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:17,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:17,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:17,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:17,280 INFO L124 PetriNetUnfolderBase]: 130/250 cut-off events. [2024-02-20 11:54:17,280 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2024-02-20 11:54:17,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2464 conditions, 250 events. 130/250 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 900 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 2136. Up to 206 conditions per place. [2024-02-20 11:54:17,282 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 80 selfloop transitions, 16 changer transitions 38/135 dead transitions. [2024-02-20 11:54:17,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 135 transitions, 2718 flow [2024-02-20 11:54:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:17,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 46 transitions. [2024-02-20 11:54:17,283 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-02-20 11:54:17,283 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 38 predicate places. [2024-02-20 11:54:17,283 INFO L507 AbstractCegarLoop]: Abstraction has has 59 places, 135 transitions, 2718 flow [2024-02-20 11:54:17,284 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:17,284 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:17,284 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:17,284 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-20 11:54:17,284 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:17,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash 443533566, now seen corresponding path program 4 times [2024-02-20 11:54:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:17,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135240153] [2024-02-20 11:54:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:17,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:17,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:17,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135240153] [2024-02-20 11:54:17,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135240153] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:17,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179825757] [2024-02-20 11:54:17,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:54:17,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:17,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:17,345 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) [2024-02-20 11:54:17,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-20 11:54:17,431 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:54:17,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:17,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-20 11:54:17,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:17,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:17,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179825757] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:17,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:17,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-02-20 11:54:17,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58818569] [2024-02-20 11:54:17,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:17,481 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 11:54:17,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:17,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 11:54:17,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:54:17,484 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:17,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 135 transitions, 2718 flow. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 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) [2024-02-20 11:54:17,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:17,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:17,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:17,597 INFO L124 PetriNetUnfolderBase]: 146/278 cut-off events. [2024-02-20 11:54:17,597 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-02-20 11:54:17,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3022 conditions, 278 events. 146/278 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1014 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 2663. Up to 234 conditions per place. [2024-02-20 11:54:17,600 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 95 selfloop transitions, 31 changer transitions 38/165 dead transitions. [2024-02-20 11:54:17,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 165 transitions, 3651 flow [2024-02-20 11:54:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:54:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:54:17,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 86 transitions. [2024-02-20 11:54:17,600 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-02-20 11:54:17,601 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 47 predicate places. [2024-02-20 11:54:17,601 INFO L507 AbstractCegarLoop]: Abstraction has has 68 places, 165 transitions, 3651 flow [2024-02-20 11:54:17,601 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 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) [2024-02-20 11:54:17,601 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:17,601 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:17,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:17,813 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-02-20 11:54:17,813 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:17,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:17,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1376997275, now seen corresponding path program 5 times [2024-02-20 11:54:17,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:17,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930813236] [2024-02-20 11:54:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:17,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:17,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:17,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930813236] [2024-02-20 11:54:17,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930813236] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:17,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:17,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:54:17,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069749267] [2024-02-20 11:54:17,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:17,852 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:17,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:17,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:17,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:17,854 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:17,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 165 transitions, 3651 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:17,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:17,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:17,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:17,973 INFO L124 PetriNetUnfolderBase]: 152/288 cut-off events. [2024-02-20 11:54:17,974 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2024-02-20 11:54:17,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 288 events. 152/288 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1074 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 3028. Up to 238 conditions per place. [2024-02-20 11:54:17,977 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 114 selfloop transitions, 18 changer transitions 38/171 dead transitions. [2024-02-20 11:54:17,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 171 transitions, 4123 flow [2024-02-20 11:54:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-02-20 11:54:17,978 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-02-20 11:54:17,978 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 51 predicate places. [2024-02-20 11:54:17,978 INFO L507 AbstractCegarLoop]: Abstraction has has 72 places, 171 transitions, 4123 flow [2024-02-20 11:54:17,979 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:17,979 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:17,979 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:17,979 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-20 11:54:17,979 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:17,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:17,980 INFO L85 PathProgramCache]: Analyzing trace with hash -886207472, now seen corresponding path program 5 times [2024-02-20 11:54:17,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:17,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771018777] [2024-02-20 11:54:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:17,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:18,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771018777] [2024-02-20 11:54:18,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771018777] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:18,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:18,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:54:18,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131585673] [2024-02-20 11:54:18,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:18,051 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:18,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:18,055 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:18,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 171 transitions, 4123 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:18,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:18,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:18,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:18,153 INFO L124 PetriNetUnfolderBase]: 146/282 cut-off events. [2024-02-20 11:54:18,153 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-02-20 11:54:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3626 conditions, 282 events. 146/282 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1060 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 3205. Up to 232 conditions per place. [2024-02-20 11:54:18,156 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 112 selfloop transitions, 18 changer transitions 38/169 dead transitions. [2024-02-20 11:54:18,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 169 transitions, 4411 flow [2024-02-20 11:54:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:18,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:18,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-02-20 11:54:18,158 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-02-20 11:54:18,159 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 55 predicate places. [2024-02-20 11:54:18,159 INFO L507 AbstractCegarLoop]: Abstraction has has 76 places, 169 transitions, 4411 flow [2024-02-20 11:54:18,160 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:18,160 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:18,160 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:18,160 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-20 11:54:18,160 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:18,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:18,161 INFO L85 PathProgramCache]: Analyzing trace with hash 824405836, now seen corresponding path program 6 times [2024-02-20 11:54:18,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:18,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159826083] [2024-02-20 11:54:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:18,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:18,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:18,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159826083] [2024-02-20 11:54:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159826083] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:18,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:54:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411724039] [2024-02-20 11:54:18,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:18,227 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:18,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:18,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:18,230 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:18,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 169 transitions, 4411 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:18,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:18,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:18,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:18,311 INFO L124 PetriNetUnfolderBase]: 142/269 cut-off events. [2024-02-20 11:54:18,311 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-02-20 11:54:18,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 269 events. 142/269 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 988 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 3313. Up to 220 conditions per place. [2024-02-20 11:54:18,314 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 102 selfloop transitions, 17 changer transitions 40/160 dead transitions. [2024-02-20 11:54:18,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 160 transitions, 4489 flow [2024-02-20 11:54:18,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 46 transitions. [2024-02-20 11:54:18,315 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-02-20 11:54:18,316 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 59 predicate places. [2024-02-20 11:54:18,316 INFO L507 AbstractCegarLoop]: Abstraction has has 80 places, 160 transitions, 4489 flow [2024-02-20 11:54:18,317 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:18,317 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:18,317 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:18,317 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-20 11:54:18,317 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:18,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:18,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1914852853, now seen corresponding path program 6 times [2024-02-20 11:54:18,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:18,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793701323] [2024-02-20 11:54:18,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:18,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:18,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:18,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793701323] [2024-02-20 11:54:18,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793701323] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:54:18,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:54:18,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:54:18,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826944194] [2024-02-20 11:54:18,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:54:18,364 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:54:18,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:18,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:54:18,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:54:18,368 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:18,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 160 transitions, 4489 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:18,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:18,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:18,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:18,447 INFO L124 PetriNetUnfolderBase]: 132/248 cut-off events. [2024-02-20 11:54:18,447 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-02-20 11:54:18,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3699 conditions, 248 events. 132/248 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 904 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 3280. Up to 200 conditions per place. [2024-02-20 11:54:18,450 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 88 selfloop transitions, 19 changer transitions 40/148 dead transitions. [2024-02-20 11:54:18,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 148 transitions, 4438 flow [2024-02-20 11:54:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:54:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:54:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-02-20 11:54:18,451 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-02-20 11:54:18,452 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 63 predicate places. [2024-02-20 11:54:18,452 INFO L507 AbstractCegarLoop]: Abstraction has has 84 places, 148 transitions, 4438 flow [2024-02-20 11:54:18,452 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:18,452 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:18,453 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:18,453 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-20 11:54:18,453 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:18,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:18,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1177332715, now seen corresponding path program 1 times [2024-02-20 11:54:18,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:18,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061443952] [2024-02-20 11:54:18,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:18,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:18,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:18,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061443952] [2024-02-20 11:54:18,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061443952] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:18,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948237885] [2024-02-20 11:54:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:18,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:18,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:18,612 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) [2024-02-20 11:54:18,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-20 11:54:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:18,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:54:18,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:18,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:18,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948237885] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:18,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:18,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-02-20 11:54:18,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540267215] [2024-02-20 11:54:18,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:18,929 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:54:18,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:18,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:54:18,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:54:18,930 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:54:18,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 148 transitions, 4438 flow. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 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) [2024-02-20 11:54:18,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:18,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:54:18,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:19,127 INFO L124 PetriNetUnfolderBase]: 174/327 cut-off events. [2024-02-20 11:54:19,127 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2024-02-20 11:54:19,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5178 conditions, 327 events. 174/327 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1289 event pairs, 0 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 4585. Up to 279 conditions per place. [2024-02-20 11:54:19,132 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 115 selfloop transitions, 22 changer transitions 45/191 dead transitions. [2024-02-20 11:54:19,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 191 transitions, 6115 flow [2024-02-20 11:54:19,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:19,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-02-20 11:54:19,133 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5730994152046783 [2024-02-20 11:54:19,133 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 71 predicate places. [2024-02-20 11:54:19,133 INFO L507 AbstractCegarLoop]: Abstraction has has 92 places, 191 transitions, 6115 flow [2024-02-20 11:54:19,133 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 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) [2024-02-20 11:54:19,133 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:19,134 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:19,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:19,345 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:19,346 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:19,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:19,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1064602649, now seen corresponding path program 2 times [2024-02-20 11:54:19,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:19,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352949143] [2024-02-20 11:54:19,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:19,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:19,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352949143] [2024-02-20 11:54:19,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352949143] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691501079] [2024-02-20 11:54:19,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:54:19,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:19,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:19,647 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) [2024-02-20 11:54:19,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-20 11:54:19,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:54:19,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:19,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:54:19,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:19,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:19,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691501079] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:19,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:19,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-20 11:54:19,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550480197] [2024-02-20 11:54:19,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:19,916 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 11:54:19,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:19,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 11:54:19,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:54:19,917 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:54:19,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 191 transitions, 6115 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:19,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:19,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:54:19,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:20,146 INFO L124 PetriNetUnfolderBase]: 189/362 cut-off events. [2024-02-20 11:54:20,146 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2024-02-20 11:54:20,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6057 conditions, 362 events. 189/362 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1473 event pairs, 0 based on Foata normal form. 1/295 useless extension candidates. Maximal degree in co-relation 5376. Up to 313 conditions per place. [2024-02-20 11:54:20,151 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 130 selfloop transitions, 24 changer transitions 50/213 dead transitions. [2024-02-20 11:54:20,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 213 transitions, 7238 flow [2024-02-20 11:54:20,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:20,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-02-20 11:54:20,152 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6081871345029239 [2024-02-20 11:54:20,152 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 79 predicate places. [2024-02-20 11:54:20,152 INFO L507 AbstractCegarLoop]: Abstraction has has 100 places, 213 transitions, 7238 flow [2024-02-20 11:54:20,153 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:20,153 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:20,153 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:20,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:20,364 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-02-20 11:54:20,364 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:20,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:20,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1362768031, now seen corresponding path program 3 times [2024-02-20 11:54:20,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:20,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961939419] [2024-02-20 11:54:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:20,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:20,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:20,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:20,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961939419] [2024-02-20 11:54:20,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961939419] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:20,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479022253] [2024-02-20 11:54:20,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:54:20,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:20,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:20,512 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) [2024-02-20 11:54:20,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-20 11:54:20,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 11:54:20,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:20,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:54:20,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:20,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:20,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479022253] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:20,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:20,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-02-20 11:54:20,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348049309] [2024-02-20 11:54:20,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:20,751 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:54:20,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:20,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:54:20,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:54:20,751 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:54:20,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 213 transitions, 7238 flow. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:20,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:20,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:54:20,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:20,990 INFO L124 PetriNetUnfolderBase]: 189/360 cut-off events. [2024-02-20 11:54:20,991 INFO L125 PetriNetUnfolderBase]: For 818/818 co-relation queries the response was YES. [2024-02-20 11:54:20,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6367 conditions, 360 events. 189/360 cut-off events. For 818/818 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1469 event pairs, 0 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 5668. Up to 312 conditions per place. [2024-02-20 11:54:20,996 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 125 selfloop transitions, 23 changer transitions 55/212 dead transitions. [2024-02-20 11:54:20,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 212 transitions, 7606 flow [2024-02-20 11:54:20,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-02-20 11:54:20,997 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-02-20 11:54:20,998 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 87 predicate places. [2024-02-20 11:54:20,998 INFO L507 AbstractCegarLoop]: Abstraction has has 108 places, 212 transitions, 7606 flow [2024-02-20 11:54:20,998 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:20,998 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:20,998 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:21,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:21,210 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-20 11:54:21,210 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:21,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:21,211 INFO L85 PathProgramCache]: Analyzing trace with hash 912849187, now seen corresponding path program 4 times [2024-02-20 11:54:21,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:21,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194942954] [2024-02-20 11:54:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:21,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:21,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:21,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194942954] [2024-02-20 11:54:21,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194942954] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:21,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365614384] [2024-02-20 11:54:21,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:54:21,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:21,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:21,417 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) [2024-02-20 11:54:21,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-20 11:54:21,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:54:21,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:21,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:54:21,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:21,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:21,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365614384] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:21,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:21,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-20 11:54:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68383764] [2024-02-20 11:54:21,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:21,719 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 11:54:21,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:21,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 11:54:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:54:21,720 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:54:21,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 212 transitions, 7606 flow. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:21,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:21,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:54:21,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:21,964 INFO L124 PetriNetUnfolderBase]: 230/446 cut-off events. [2024-02-20 11:54:21,964 INFO L125 PetriNetUnfolderBase]: For 1306/1306 co-relation queries the response was YES. [2024-02-20 11:54:21,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8276 conditions, 446 events. 230/446 cut-off events. For 1306/1306 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1955 event pairs, 0 based on Foata normal form. 1/359 useless extension candidates. Maximal degree in co-relation 7441. Up to 374 conditions per place. [2024-02-20 11:54:21,972 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 171 selfloop transitions, 24 changer transitions 60/264 dead transitions. [2024-02-20 11:54:21,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 264 transitions, 10005 flow [2024-02-20 11:54:21,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:21,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-02-20 11:54:21,974 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5906432748538012 [2024-02-20 11:54:21,974 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 95 predicate places. [2024-02-20 11:54:21,974 INFO L507 AbstractCegarLoop]: Abstraction has has 116 places, 264 transitions, 10005 flow [2024-02-20 11:54:21,975 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:21,975 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:21,975 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:21,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:22,187 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-20 11:54:22,187 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:22,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:22,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1514521493, now seen corresponding path program 5 times [2024-02-20 11:54:22,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:22,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632596595] [2024-02-20 11:54:22,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:22,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:22,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:22,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632596595] [2024-02-20 11:54:22,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632596595] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:22,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301444406] [2024-02-20 11:54:22,348 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:54:22,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:22,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:22,365 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) [2024-02-20 11:54:22,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-20 11:54:22,470 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 11:54:22,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:22,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:54:22,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:22,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:22,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301444406] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:22,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:22,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-02-20 11:54:22,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494837466] [2024-02-20 11:54:22,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:22,664 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:54:22,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:22,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:54:22,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:54:22,666 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:54:22,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 264 transitions, 10005 flow. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 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) [2024-02-20 11:54:22,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:22,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:54:22,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:22,867 INFO L124 PetriNetUnfolderBase]: 230/444 cut-off events. [2024-02-20 11:54:22,868 INFO L125 PetriNetUnfolderBase]: For 1678/1678 co-relation queries the response was YES. [2024-02-20 11:54:22,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8663 conditions, 444 events. 230/444 cut-off events. For 1678/1678 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1956 event pairs, 0 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 7808. Up to 373 conditions per place. [2024-02-20 11:54:22,874 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 165 selfloop transitions, 24 changer transitions 65/263 dead transitions. [2024-02-20 11:54:22,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 263 transitions, 10471 flow [2024-02-20 11:54:22,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:22,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-02-20 11:54:22,875 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5672514619883041 [2024-02-20 11:54:22,875 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 103 predicate places. [2024-02-20 11:54:22,875 INFO L507 AbstractCegarLoop]: Abstraction has has 124 places, 263 transitions, 10471 flow [2024-02-20 11:54:22,875 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 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) [2024-02-20 11:54:22,875 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:22,875 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:22,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:23,086 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:23,087 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:23,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:23,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1671504801, now seen corresponding path program 6 times [2024-02-20 11:54:23,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:23,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043740310] [2024-02-20 11:54:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:23,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:23,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:23,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043740310] [2024-02-20 11:54:23,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043740310] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:23,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176924044] [2024-02-20 11:54:23,223 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:54:23,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:23,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:23,237 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) [2024-02-20 11:54:23,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-20 11:54:23,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:54:23,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:23,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:54:23,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:23,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:23,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176924044] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:23,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:23,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-02-20 11:54:23,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871972380] [2024-02-20 11:54:23,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:23,497 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:54:23,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:54:23,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:54:23,498 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:54:23,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 263 transitions, 10471 flow. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:23,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:23,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:54:23,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:23,701 INFO L124 PetriNetUnfolderBase]: 230/442 cut-off events. [2024-02-20 11:54:23,701 INFO L125 PetriNetUnfolderBase]: For 2257/2257 co-relation queries the response was YES. [2024-02-20 11:54:23,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9048 conditions, 442 events. 230/442 cut-off events. For 2257/2257 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1942 event pairs, 0 based on Foata normal form. 1/355 useless extension candidates. Maximal degree in co-relation 8175. Up to 372 conditions per place. [2024-02-20 11:54:23,706 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 161 selfloop transitions, 22 changer transitions 70/262 dead transitions. [2024-02-20 11:54:23,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 262 transitions, 10933 flow [2024-02-20 11:54:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:54:23,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:54:23,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-02-20 11:54:23,707 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-02-20 11:54:23,708 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 111 predicate places. [2024-02-20 11:54:23,708 INFO L507 AbstractCegarLoop]: Abstraction has has 132 places, 262 transitions, 10933 flow [2024-02-20 11:54:23,708 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:23,708 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:23,708 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:23,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:23,919 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:23,920 INFO L432 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:23,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:23,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2138308882, now seen corresponding path program 7 times [2024-02-20 11:54:23,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:23,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510235839] [2024-02-20 11:54:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:23,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:23,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:23,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510235839] [2024-02-20 11:54:23,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510235839] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:23,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391506988] [2024-02-20 11:54:23,972 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:54:23,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:23,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:23,973 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) [2024-02-20 11:54:23,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-20 11:54:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:24,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:24,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:24,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:24,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:24,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391506988] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:24,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:24,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-02-20 11:54:24,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055218195] [2024-02-20 11:54:24,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:24,094 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-20 11:54:24,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:24,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-20 11:54:24,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:54:24,096 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:24,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 262 transitions, 10933 flow. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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) [2024-02-20 11:54:24,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:24,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:24,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:24,280 INFO L124 PetriNetUnfolderBase]: 252/487 cut-off events. [2024-02-20 11:54:24,281 INFO L125 PetriNetUnfolderBase]: For 2268/2268 co-relation queries the response was YES. [2024-02-20 11:54:24,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10464 conditions, 487 events. 252/487 cut-off events. For 2268/2268 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2214 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 9504. Up to 416 conditions per place. [2024-02-20 11:54:24,289 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 167 selfloop transitions, 37 changer transitions 85/290 dead transitions. [2024-02-20 11:54:24,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 290 transitions, 12670 flow [2024-02-20 11:54:24,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:54:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:54:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-02-20 11:54:24,290 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5413533834586466 [2024-02-20 11:54:24,291 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 117 predicate places. [2024-02-20 11:54:24,291 INFO L507 AbstractCegarLoop]: Abstraction has has 138 places, 290 transitions, 12670 flow [2024-02-20 11:54:24,291 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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) [2024-02-20 11:54:24,291 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:24,292 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:24,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:24,506 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:24,507 INFO L432 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:24,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:24,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1497820897, now seen corresponding path program 8 times [2024-02-20 11:54:24,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:24,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049839758] [2024-02-20 11:54:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:24,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:24,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:24,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049839758] [2024-02-20 11:54:24,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049839758] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:24,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811724797] [2024-02-20 11:54:24,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:54:24,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:24,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:24,583 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) [2024-02-20 11:54:24,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-20 11:54:24,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:54:24,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:24,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:24,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:24,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:24,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811724797] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:24,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:24,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-02-20 11:54:24,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004075375] [2024-02-20 11:54:24,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:24,718 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-20 11:54:24,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:24,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-20 11:54:24,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:54:24,721 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:24,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 290 transitions, 12670 flow. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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) [2024-02-20 11:54:24,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:24,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:24,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:24,930 INFO L124 PetriNetUnfolderBase]: 268/515 cut-off events. [2024-02-20 11:54:24,930 INFO L125 PetriNetUnfolderBase]: For 2176/2176 co-relation queries the response was YES. [2024-02-20 11:54:24,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11596 conditions, 515 events. 268/515 cut-off events. For 2176/2176 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2376 event pairs, 0 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 10593. Up to 444 conditions per place. [2024-02-20 11:54:24,937 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 166 selfloop transitions, 54 changer transitions 85/306 dead transitions. [2024-02-20 11:54:24,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 306 transitions, 13990 flow [2024-02-20 11:54:24,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:54:24,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:54:24,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-02-20 11:54:24,938 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-20 11:54:24,938 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 126 predicate places. [2024-02-20 11:54:24,939 INFO L507 AbstractCegarLoop]: Abstraction has has 147 places, 306 transitions, 13990 flow [2024-02-20 11:54:24,939 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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) [2024-02-20 11:54:24,939 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:24,939 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:24,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:25,150 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-02-20 11:54:25,151 INFO L432 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:25,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:25,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1637076100, now seen corresponding path program 9 times [2024-02-20 11:54:25,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:25,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333664332] [2024-02-20 11:54:25,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:25,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:25,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:25,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333664332] [2024-02-20 11:54:25,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333664332] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:25,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598899537] [2024-02-20 11:54:25,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:54:25,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:25,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:25,217 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) [2024-02-20 11:54:25,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-20 11:54:25,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:54:25,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:25,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:25,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:25,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:25,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598899537] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:25,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:25,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-02-20 11:54:25,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584296286] [2024-02-20 11:54:25,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:25,346 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-20 11:54:25,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-20 11:54:25,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-02-20 11:54:25,347 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:25,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 306 transitions, 13990 flow. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:25,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:25,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:25,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:25,557 INFO L124 PetriNetUnfolderBase]: 316/589 cut-off events. [2024-02-20 11:54:25,557 INFO L125 PetriNetUnfolderBase]: For 2185/2185 co-relation queries the response was YES. [2024-02-20 11:54:25,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13891 conditions, 589 events. 316/589 cut-off events. For 2185/2185 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2735 event pairs, 0 based on Foata normal form. 0/463 useless extension candidates. Maximal degree in co-relation 12845. Up to 518 conditions per place. [2024-02-20 11:54:25,565 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 186 selfloop transitions, 56 changer transitions 101/344 dead transitions. [2024-02-20 11:54:25,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 344 transitions, 16439 flow [2024-02-20 11:54:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:54:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:54:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2024-02-20 11:54:25,566 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4517543859649123 [2024-02-20 11:54:25,566 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 137 predicate places. [2024-02-20 11:54:25,566 INFO L507 AbstractCegarLoop]: Abstraction has has 158 places, 344 transitions, 16439 flow [2024-02-20 11:54:25,567 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:25,567 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:25,567 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:25,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:25,778 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-02-20 11:54:25,778 INFO L432 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:25,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1762304425, now seen corresponding path program 10 times [2024-02-20 11:54:25,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:25,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303183393] [2024-02-20 11:54:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:25,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:25,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:25,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303183393] [2024-02-20 11:54:25,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303183393] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:25,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79372418] [2024-02-20 11:54:25,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:54:25,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:25,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:25,864 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:25,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-20 11:54:25,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:54:25,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:25,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:25,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:25,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:26,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79372418] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:26,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:26,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-02-20 11:54:26,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137412409] [2024-02-20 11:54:26,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:26,002 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:54:26,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:54:26,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:54:26,005 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:26,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 344 transitions, 16439 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:26,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:26,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:26,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:26,301 INFO L124 PetriNetUnfolderBase]: 357/654 cut-off events. [2024-02-20 11:54:26,302 INFO L125 PetriNetUnfolderBase]: For 2190/2190 co-relation queries the response was YES. [2024-02-20 11:54:26,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16107 conditions, 654 events. 357/654 cut-off events. For 2190/2190 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3034 event pairs, 0 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 15018. Up to 583 conditions per place. [2024-02-20 11:54:26,313 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 203 selfloop transitions, 76 changer transitions 101/381 dead transitions. [2024-02-20 11:54:26,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 381 transitions, 18984 flow [2024-02-20 11:54:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-02-20 11:54:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-02-20 11:54:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 133 transitions. [2024-02-20 11:54:26,314 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-02-20 11:54:26,315 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 152 predicate places. [2024-02-20 11:54:26,315 INFO L507 AbstractCegarLoop]: Abstraction has has 173 places, 381 transitions, 18984 flow [2024-02-20 11:54:26,315 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:26,315 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:26,315 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:26,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:26,526 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-02-20 11:54:26,527 INFO L432 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:26,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:26,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1809781869, now seen corresponding path program 11 times [2024-02-20 11:54:26,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:26,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967566221] [2024-02-20 11:54:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:26,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:26,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:26,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967566221] [2024-02-20 11:54:26,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967566221] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:26,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446125030] [2024-02-20 11:54:26,604 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:54:26,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:26,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:26,605 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:26,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-20 11:54:26,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:54:26,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:26,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:26,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:26,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:26,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446125030] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:26,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:26,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-02-20 11:54:26,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999423992] [2024-02-20 11:54:26,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:26,747 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-20 11:54:26,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:26,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-20 11:54:26,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-02-20 11:54:26,751 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:26,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 381 transitions, 18984 flow. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:26,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:26,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:26,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:27,081 INFO L124 PetriNetUnfolderBase]: 416/759 cut-off events. [2024-02-20 11:54:27,082 INFO L125 PetriNetUnfolderBase]: For 2200/2200 co-relation queries the response was YES. [2024-02-20 11:54:27,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19498 conditions, 759 events. 416/759 cut-off events. For 2200/2200 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3609 event pairs, 0 based on Foata normal form. 0/605 useless extension candidates. Maximal degree in co-relation 18366. Up to 688 conditions per place. [2024-02-20 11:54:27,091 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 260 selfloop transitions, 79 changer transitions 101/441 dead transitions. [2024-02-20 11:54:27,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 441 transitions, 22888 flow [2024-02-20 11:54:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-20 11:54:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-20 11:54:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 114 transitions. [2024-02-20 11:54:27,093 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-02-20 11:54:27,093 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 165 predicate places. [2024-02-20 11:54:27,093 INFO L507 AbstractCegarLoop]: Abstraction has has 186 places, 441 transitions, 22888 flow [2024-02-20 11:54:27,093 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:27,093 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:27,093 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:27,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:27,304 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-02-20 11:54:27,304 INFO L432 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:27,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:27,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1357789334, now seen corresponding path program 12 times [2024-02-20 11:54:27,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:27,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081326669] [2024-02-20 11:54:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:27,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:27,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081326669] [2024-02-20 11:54:27,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081326669] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:27,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53034468] [2024-02-20 11:54:27,352 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:54:27,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:27,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:27,353 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:27,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-20 11:54:27,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:54:27,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:27,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:27,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:27,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:27,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53034468] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:27,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:27,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-02-20 11:54:27,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489355038] [2024-02-20 11:54:27,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:27,535 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:54:27,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:27,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:54:27,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:54:27,538 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:27,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 441 transitions, 22888 flow. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 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) [2024-02-20 11:54:27,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:27,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:27,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:27,840 INFO L124 PetriNetUnfolderBase]: 435/788 cut-off events. [2024-02-20 11:54:27,841 INFO L125 PetriNetUnfolderBase]: For 2292/2292 co-relation queries the response was YES. [2024-02-20 11:54:27,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21039 conditions, 788 events. 435/788 cut-off events. For 2292/2292 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3755 event pairs, 0 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 19864. Up to 717 conditions per place. [2024-02-20 11:54:27,856 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 284 selfloop transitions, 67 changer transitions 109/461 dead transitions. [2024-02-20 11:54:27,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 461 transitions, 24848 flow [2024-02-20 11:54:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:54:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:54:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-02-20 11:54:27,857 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-02-20 11:54:27,857 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 176 predicate places. [2024-02-20 11:54:27,857 INFO L507 AbstractCegarLoop]: Abstraction has has 197 places, 461 transitions, 24848 flow [2024-02-20 11:54:27,857 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 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) [2024-02-20 11:54:27,857 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:27,858 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:27,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:28,068 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:28,070 INFO L432 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:28,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:28,070 INFO L85 PathProgramCache]: Analyzing trace with hash -51691117, now seen corresponding path program 13 times [2024-02-20 11:54:28,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:28,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203080138] [2024-02-20 11:54:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:28,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:28,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:28,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203080138] [2024-02-20 11:54:28,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203080138] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:28,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663130174] [2024-02-20 11:54:28,123 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:54:28,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:28,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:28,149 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:28,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-20 11:54:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:28,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:28,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:28,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:28,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663130174] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:28,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:28,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-02-20 11:54:28,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490548739] [2024-02-20 11:54:28,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:28,285 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:54:28,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:28,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:54:28,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:54:28,286 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:28,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 461 transitions, 24848 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:28,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:28,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:28,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:28,669 INFO L124 PetriNetUnfolderBase]: 437/794 cut-off events. [2024-02-20 11:54:28,669 INFO L125 PetriNetUnfolderBase]: For 2286/2286 co-relation queries the response was YES. [2024-02-20 11:54:28,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21994 conditions, 794 events. 437/794 cut-off events. For 2286/2286 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3797 event pairs, 0 based on Foata normal form. 0/636 useless extension candidates. Maximal degree in co-relation 20776. Up to 723 conditions per place. [2024-02-20 11:54:28,682 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 261 selfloop transitions, 91 changer transitions 112/465 dead transitions. [2024-02-20 11:54:28,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 465 transitions, 25992 flow [2024-02-20 11:54:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-20 11:54:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-20 11:54:28,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 110 transitions. [2024-02-20 11:54:28,684 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41353383458646614 [2024-02-20 11:54:28,684 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 189 predicate places. [2024-02-20 11:54:28,684 INFO L507 AbstractCegarLoop]: Abstraction has has 210 places, 465 transitions, 25992 flow [2024-02-20 11:54:28,684 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:28,684 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:28,684 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:28,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:28,895 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-02-20 11:54:28,895 INFO L432 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:28,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:28,895 INFO L85 PathProgramCache]: Analyzing trace with hash -828840716, now seen corresponding path program 14 times [2024-02-20 11:54:28,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:28,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982867823] [2024-02-20 11:54:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:28,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:28,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982867823] [2024-02-20 11:54:28,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982867823] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643147104] [2024-02-20 11:54:28,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:54:28,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:28,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:28,979 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:29,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-20 11:54:29,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:54:29,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:29,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:29,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:29,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:29,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643147104] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:29,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:29,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-02-20 11:54:29,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468133167] [2024-02-20 11:54:29,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:29,168 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:54:29,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:54:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:54:29,170 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:29,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 465 transitions, 25992 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:29,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:29,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:29,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:29,509 INFO L124 PetriNetUnfolderBase]: 439/798 cut-off events. [2024-02-20 11:54:29,509 INFO L125 PetriNetUnfolderBase]: For 2291/2291 co-relation queries the response was YES. [2024-02-20 11:54:29,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22902 conditions, 798 events. 439/798 cut-off events. For 2291/2291 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3823 event pairs, 0 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 21641. Up to 727 conditions per place. [2024-02-20 11:54:29,520 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 283 selfloop transitions, 72 changer transitions 112/468 dead transitions. [2024-02-20 11:54:29,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 468 transitions, 27091 flow [2024-02-20 11:54:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-20 11:54:29,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-20 11:54:29,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 134 transitions. [2024-02-20 11:54:29,521 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4148606811145511 [2024-02-20 11:54:29,521 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 205 predicate places. [2024-02-20 11:54:29,521 INFO L507 AbstractCegarLoop]: Abstraction has has 226 places, 468 transitions, 27091 flow [2024-02-20 11:54:29,521 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:29,521 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:29,521 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:29,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:29,734 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-02-20 11:54:29,734 INFO L432 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:29,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:29,734 INFO L85 PathProgramCache]: Analyzing trace with hash 884747573, now seen corresponding path program 15 times [2024-02-20 11:54:29,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:29,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611005212] [2024-02-20 11:54:29,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:29,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:29,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:29,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611005212] [2024-02-20 11:54:29,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611005212] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:29,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095752943] [2024-02-20 11:54:29,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:54:29,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:29,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:29,787 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:29,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-20 11:54:29,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:54:29,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:29,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:29,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:29,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:29,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095752943] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:29,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:29,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-02-20 11:54:29,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287717182] [2024-02-20 11:54:29,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:29,956 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:54:29,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:29,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:54:29,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:54:29,959 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:29,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 468 transitions, 27091 flow. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 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) [2024-02-20 11:54:29,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:29,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:29,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:30,545 INFO L124 PetriNetUnfolderBase]: 602/1077 cut-off events. [2024-02-20 11:54:30,546 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2024-02-20 11:54:30,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32088 conditions, 1077 events. 602/1077 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5422 event pairs, 0 based on Foata normal form. 0/873 useless extension candidates. Maximal degree in co-relation 30784. Up to 1006 conditions per place. [2024-02-20 11:54:30,559 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 350 selfloop transitions, 162 changer transitions 114/627 dead transitions. [2024-02-20 11:54:30,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 627 transitions, 37622 flow [2024-02-20 11:54:30,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-02-20 11:54:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-02-20 11:54:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 179 transitions. [2024-02-20 11:54:30,560 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4096109839816934 [2024-02-20 11:54:30,560 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 227 predicate places. [2024-02-20 11:54:30,560 INFO L507 AbstractCegarLoop]: Abstraction has has 248 places, 627 transitions, 37622 flow [2024-02-20 11:54:30,560 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 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) [2024-02-20 11:54:30,560 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:30,561 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:30,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-02-20 11:54:30,770 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-02-20 11:54:30,771 INFO L432 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:30,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash 375131603, now seen corresponding path program 16 times [2024-02-20 11:54:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:30,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256384642] [2024-02-20 11:54:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:30,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:30,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256384642] [2024-02-20 11:54:30,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256384642] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:30,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810033534] [2024-02-20 11:54:30,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:54:30,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:30,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:30,845 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:30,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-20 11:54:30,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:54:30,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:30,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:30,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:30,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:30,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810033534] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:30,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:30,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-02-20 11:54:30,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510800828] [2024-02-20 11:54:30,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:30,997 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:54:30,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:30,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:54:30,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:54:31,001 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:31,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 627 transitions, 37622 flow. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 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) [2024-02-20 11:54:31,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:31,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:31,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:31,585 INFO L124 PetriNetUnfolderBase]: 657/1158 cut-off events. [2024-02-20 11:54:31,585 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2024-02-20 11:54:31,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35675 conditions, 1158 events. 657/1158 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5867 event pairs, 0 based on Foata normal form. 0/926 useless extension candidates. Maximal degree in co-relation 34328. Up to 1087 conditions per place. [2024-02-20 11:54:31,601 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 385 selfloop transitions, 166 changer transitions 122/674 dead transitions. [2024-02-20 11:54:31,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 674 transitions, 41788 flow [2024-02-20 11:54:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-02-20 11:54:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-02-20 11:54:31,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 134 transitions. [2024-02-20 11:54:31,603 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.391812865497076 [2024-02-20 11:54:31,603 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 244 predicate places. [2024-02-20 11:54:31,603 INFO L507 AbstractCegarLoop]: Abstraction has has 265 places, 674 transitions, 41788 flow [2024-02-20 11:54:31,603 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 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) [2024-02-20 11:54:31,603 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:31,604 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:31,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-02-20 11:54:31,814 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:31,815 INFO L432 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:31,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1470080595, now seen corresponding path program 17 times [2024-02-20 11:54:31,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:31,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074245657] [2024-02-20 11:54:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:31,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:31,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:31,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074245657] [2024-02-20 11:54:31,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074245657] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:31,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858378696] [2024-02-20 11:54:31,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:54:31,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:31,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:31,885 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:31,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-20 11:54:31,958 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 11:54:31,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:31,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:31,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:31,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:32,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858378696] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:32,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:32,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-02-20 11:54:32,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045932476] [2024-02-20 11:54:32,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:32,025 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-20 11:54:32,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:32,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-20 11:54:32,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-02-20 11:54:32,029 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:32,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 674 transitions, 41788 flow. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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) [2024-02-20 11:54:32,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:32,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:32,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:32,602 INFO L124 PetriNetUnfolderBase]: 720/1257 cut-off events. [2024-02-20 11:54:32,602 INFO L125 PetriNetUnfolderBase]: For 2319/2319 co-relation queries the response was YES. [2024-02-20 11:54:32,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40005 conditions, 1257 events. 720/1257 cut-off events. For 2319/2319 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6413 event pairs, 0 based on Foata normal form. 0/1003 useless extension candidates. Maximal degree in co-relation 38615. Up to 1186 conditions per place. [2024-02-20 11:54:32,624 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 383 selfloop transitions, 224 changer transitions 122/730 dead transitions. [2024-02-20 11:54:32,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 730 transitions, 46733 flow [2024-02-20 11:54:32,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-20 11:54:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-20 11:54:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 141 transitions. [2024-02-20 11:54:32,626 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43653250773993807 [2024-02-20 11:54:32,626 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 260 predicate places. [2024-02-20 11:54:32,626 INFO L507 AbstractCegarLoop]: Abstraction has has 281 places, 730 transitions, 46733 flow [2024-02-20 11:54:32,626 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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) [2024-02-20 11:54:32,627 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:32,627 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:32,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-02-20 11:54:32,837 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:32,838 INFO L432 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:32,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:32,838 INFO L85 PathProgramCache]: Analyzing trace with hash -706019028, now seen corresponding path program 18 times [2024-02-20 11:54:32,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:32,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690302640] [2024-02-20 11:54:32,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:32,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:32,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:32,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690302640] [2024-02-20 11:54:32,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690302640] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:32,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66115979] [2024-02-20 11:54:32,887 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:54:32,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:32,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:32,905 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:32,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-20 11:54:32,989 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:54:32,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:32,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:32,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:33,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:33,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66115979] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:33,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:33,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-02-20 11:54:33,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898041843] [2024-02-20 11:54:33,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:33,040 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-20 11:54:33,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:33,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-20 11:54:33,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:54:33,042 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:33,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 730 transitions, 46733 flow. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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) [2024-02-20 11:54:33,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:33,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:33,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:33,646 INFO L124 PetriNetUnfolderBase]: 748/1308 cut-off events. [2024-02-20 11:54:33,646 INFO L125 PetriNetUnfolderBase]: For 2332/2332 co-relation queries the response was YES. [2024-02-20 11:54:33,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42915 conditions, 1308 events. 748/1308 cut-off events. For 2332/2332 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6756 event pairs, 0 based on Foata normal form. 0/1040 useless extension candidates. Maximal degree in co-relation 41414. Up to 1230 conditions per place. [2024-02-20 11:54:33,667 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 508 selfloop transitions, 131 changer transitions 122/762 dead transitions. [2024-02-20 11:54:33,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 762 transitions, 50280 flow [2024-02-20 11:54:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:54:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:54:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 89 transitions. [2024-02-20 11:54:33,669 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-02-20 11:54:33,669 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 269 predicate places. [2024-02-20 11:54:33,669 INFO L507 AbstractCegarLoop]: Abstraction has has 290 places, 762 transitions, 50280 flow [2024-02-20 11:54:33,669 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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) [2024-02-20 11:54:33,669 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:33,669 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:33,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:33,880 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-02-20 11:54:33,880 INFO L432 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:33,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:33,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2048849077, now seen corresponding path program 19 times [2024-02-20 11:54:33,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:33,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653717013] [2024-02-20 11:54:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:33,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:33,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:33,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653717013] [2024-02-20 11:54:33,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653717013] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:33,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148478599] [2024-02-20 11:54:33,934 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:54:33,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:33,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:33,935 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:33,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-20 11:54:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:34,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:34,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:34,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:34,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148478599] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:34,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:34,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-02-20 11:54:34,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636262263] [2024-02-20 11:54:34,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:34,079 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:54:34,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:34,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:54:34,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:54:34,082 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:34,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 762 transitions, 50280 flow. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 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) [2024-02-20 11:54:34,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:34,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:34,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:34,827 INFO L124 PetriNetUnfolderBase]: 813/1415 cut-off events. [2024-02-20 11:54:34,828 INFO L125 PetriNetUnfolderBase]: For 2332/2332 co-relation queries the response was YES. [2024-02-20 11:54:34,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47865 conditions, 1415 events. 813/1415 cut-off events. For 2332/2332 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7391 event pairs, 0 based on Foata normal form. 0/1127 useless extension candidates. Maximal degree in co-relation 46319. Up to 1337 conditions per place. [2024-02-20 11:54:34,848 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 634 selfloop transitions, 66 changer transitions 122/823 dead transitions. [2024-02-20 11:54:34,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 823 transitions, 55968 flow [2024-02-20 11:54:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 11:54:34,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 11:54:34,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 156 transitions. [2024-02-20 11:54:34,849 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43213296398891965 [2024-02-20 11:54:34,849 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 287 predicate places. [2024-02-20 11:54:34,850 INFO L507 AbstractCegarLoop]: Abstraction has has 308 places, 823 transitions, 55968 flow [2024-02-20 11:54:34,850 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 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) [2024-02-20 11:54:34,850 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:34,850 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:34,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:35,060 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-02-20 11:54:35,061 INFO L432 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:35,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:35,061 INFO L85 PathProgramCache]: Analyzing trace with hash 299841103, now seen corresponding path program 20 times [2024-02-20 11:54:35,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:35,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579683446] [2024-02-20 11:54:35,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:35,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:35,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:35,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579683446] [2024-02-20 11:54:35,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579683446] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:35,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542756961] [2024-02-20 11:54:35,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:54:35,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:35,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:35,109 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:35,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-20 11:54:35,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:54:35,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:35,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:35,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:35,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:35,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542756961] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:35,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:35,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-02-20 11:54:35,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18759121] [2024-02-20 11:54:35,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:35,224 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-20 11:54:35,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-20 11:54:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:54:35,226 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:35,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 823 transitions, 55968 flow. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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) [2024-02-20 11:54:35,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:35,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:35,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:35,902 INFO L124 PetriNetUnfolderBase]: 815/1421 cut-off events. [2024-02-20 11:54:35,902 INFO L125 PetriNetUnfolderBase]: For 2422/2422 co-relation queries the response was YES. [2024-02-20 11:54:35,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49488 conditions, 1421 events. 815/1421 cut-off events. For 2422/2422 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7438 event pairs, 0 based on Foata normal form. 0/1133 useless extension candidates. Maximal degree in co-relation 47897. Up to 1342 conditions per place. [2024-02-20 11:54:35,923 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 593 selfloop transitions, 104 changer transitions 129/827 dead transitions. [2024-02-20 11:54:35,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 827 transitions, 57892 flow [2024-02-20 11:54:35,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:54:35,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:54:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-02-20 11:54:35,925 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-02-20 11:54:35,925 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 293 predicate places. [2024-02-20 11:54:35,925 INFO L507 AbstractCegarLoop]: Abstraction has has 314 places, 827 transitions, 57892 flow [2024-02-20 11:54:35,925 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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) [2024-02-20 11:54:35,925 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:35,925 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:35,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:36,137 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:36,137 INFO L432 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:36,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:36,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1858266541, now seen corresponding path program 21 times [2024-02-20 11:54:36,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:36,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884471831] [2024-02-20 11:54:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:36,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:36,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:36,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884471831] [2024-02-20 11:54:36,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884471831] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:36,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501581354] [2024-02-20 11:54:36,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:54:36,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:36,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:36,199 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:36,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-02-20 11:54:36,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:54:36,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:36,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:36,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:36,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501581354] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:36,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:36,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-02-20 11:54:36,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932512645] [2024-02-20 11:54:36,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:36,345 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:54:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:54:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:54:36,348 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:36,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 827 transitions, 57892 flow. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 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) [2024-02-20 11:54:36,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:36,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:36,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:37,125 INFO L124 PetriNetUnfolderBase]: 861/1491 cut-off events. [2024-02-20 11:54:37,125 INFO L125 PetriNetUnfolderBase]: For 2334/2334 co-relation queries the response was YES. [2024-02-20 11:54:37,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53427 conditions, 1491 events. 861/1491 cut-off events. For 2334/2334 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7836 event pairs, 0 based on Foata normal form. 0/1179 useless extension candidates. Maximal degree in co-relation 51791. Up to 1412 conditions per place. [2024-02-20 11:54:37,206 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 648 selfloop transitions, 82 changer transitions 137/868 dead transitions. [2024-02-20 11:54:37,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 868 transitions, 62496 flow [2024-02-20 11:54:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-20 11:54:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-20 11:54:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 126 transitions. [2024-02-20 11:54:37,208 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39009287925696595 [2024-02-20 11:54:37,209 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 309 predicate places. [2024-02-20 11:54:37,209 INFO L507 AbstractCegarLoop]: Abstraction has has 330 places, 868 transitions, 62496 flow [2024-02-20 11:54:37,209 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 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) [2024-02-20 11:54:37,209 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:37,209 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:37,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:37,420 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:37,420 INFO L432 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:37,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:37,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1754379016, now seen corresponding path program 22 times [2024-02-20 11:54:37,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:37,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094413695] [2024-02-20 11:54:37,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:37,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:37,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:37,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094413695] [2024-02-20 11:54:37,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094413695] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:37,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874160894] [2024-02-20 11:54:37,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:54:37,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:37,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:37,503 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:37,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-02-20 11:54:37,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:54:37,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:37,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:37,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:37,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:37,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874160894] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:37,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:37,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-02-20 11:54:37,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208412823] [2024-02-20 11:54:37,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:37,681 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:54:37,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:54:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:54:37,683 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:37,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 868 transitions, 62496 flow. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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) [2024-02-20 11:54:37,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:37,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:37,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:38,574 INFO L124 PetriNetUnfolderBase]: 924/1590 cut-off events. [2024-02-20 11:54:38,574 INFO L125 PetriNetUnfolderBase]: For 2341/2341 co-relation queries the response was YES. [2024-02-20 11:54:38,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58584 conditions, 1590 events. 924/1590 cut-off events. For 2341/2341 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8445 event pairs, 0 based on Foata normal form. 0/1254 useless extension candidates. Maximal degree in co-relation 56903. Up to 1511 conditions per place. [2024-02-20 11:54:38,606 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 650 selfloop transitions, 125 changer transitions 149/925 dead transitions. [2024-02-20 11:54:38,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 925 transitions, 68463 flow [2024-02-20 11:54:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-02-20 11:54:38,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-02-20 11:54:38,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 149 transitions. [2024-02-20 11:54:38,608 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2024-02-20 11:54:38,608 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 326 predicate places. [2024-02-20 11:54:38,608 INFO L507 AbstractCegarLoop]: Abstraction has has 347 places, 925 transitions, 68463 flow [2024-02-20 11:54:38,608 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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) [2024-02-20 11:54:38,608 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:38,608 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:38,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:38,816 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-02-20 11:54:38,817 INFO L432 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:38,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:38,817 INFO L85 PathProgramCache]: Analyzing trace with hash 179457268, now seen corresponding path program 23 times [2024-02-20 11:54:38,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:38,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842192702] [2024-02-20 11:54:38,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:38,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:38,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:38,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842192702] [2024-02-20 11:54:38,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842192702] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:38,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043554045] [2024-02-20 11:54:38,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:54:38,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:38,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:38,893 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:38,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-02-20 11:54:38,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:54:38,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:38,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:38,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:39,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:39,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043554045] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:39,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:39,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-02-20 11:54:39,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830558154] [2024-02-20 11:54:39,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:39,035 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:54:39,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:39,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:54:39,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:54:39,038 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:39,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 925 transitions, 68463 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:39,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:39,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:39,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:40,047 INFO L124 PetriNetUnfolderBase]: 941/1623 cut-off events. [2024-02-20 11:54:40,047 INFO L125 PetriNetUnfolderBase]: For 2434/2434 co-relation queries the response was YES. [2024-02-20 11:54:40,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61425 conditions, 1623 events. 941/1623 cut-off events. For 2434/2434 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 8695 event pairs, 0 based on Foata normal form. 0/1287 useless extension candidates. Maximal degree in co-relation 59699. Up to 1538 conditions per place. [2024-02-20 11:54:40,086 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 674 selfloop transitions, 123 changer transitions 149/947 dead transitions. [2024-02-20 11:54:40,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 947 transitions, 71980 flow [2024-02-20 11:54:40,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-02-20 11:54:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-02-20 11:54:40,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 129 transitions. [2024-02-20 11:54:40,087 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4243421052631579 [2024-02-20 11:54:40,088 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 341 predicate places. [2024-02-20 11:54:40,088 INFO L507 AbstractCegarLoop]: Abstraction has has 362 places, 947 transitions, 71980 flow [2024-02-20 11:54:40,088 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:40,088 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:40,088 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:40,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:40,300 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-02-20 11:54:40,301 INFO L432 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:40,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:40,301 INFO L85 PathProgramCache]: Analyzing trace with hash 956606867, now seen corresponding path program 24 times [2024-02-20 11:54:40,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:40,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698578459] [2024-02-20 11:54:40,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:40,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:40,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:40,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698578459] [2024-02-20 11:54:40,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698578459] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:40,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689148599] [2024-02-20 11:54:40,360 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:54:40,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:40,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:40,362 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:40,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-02-20 11:54:40,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:54:40,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:40,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:40,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:40,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:40,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689148599] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:40,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:40,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-02-20 11:54:40,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291624122] [2024-02-20 11:54:40,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:40,494 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:54:40,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:40,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:54:40,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:54:40,499 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:40,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 947 transitions, 71980 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:40,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:40,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:40,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:41,570 INFO L124 PetriNetUnfolderBase]: 991/1693 cut-off events. [2024-02-20 11:54:41,570 INFO L125 PetriNetUnfolderBase]: For 2438/2438 co-relation queries the response was YES. [2024-02-20 11:54:41,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65776 conditions, 1693 events. 991/1693 cut-off events. For 2438/2438 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9076 event pairs, 0 based on Foata normal form. 0/1333 useless extension candidates. Maximal degree in co-relation 64005. Up to 1608 conditions per place. [2024-02-20 11:54:41,604 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 653 selfloop transitions, 180 changer transitions 153/987 dead transitions. [2024-02-20 11:54:41,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 987 transitions, 76992 flow [2024-02-20 11:54:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:54:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:54:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 101 transitions. [2024-02-20 11:54:41,608 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2024-02-20 11:54:41,610 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 352 predicate places. [2024-02-20 11:54:41,610 INFO L507 AbstractCegarLoop]: Abstraction has has 373 places, 987 transitions, 76992 flow [2024-02-20 11:54:41,611 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:41,611 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:41,611 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:41,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:41,818 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-02-20 11:54:41,818 INFO L432 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:41,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:41,818 INFO L85 PathProgramCache]: Analyzing trace with hash 921452984, now seen corresponding path program 25 times [2024-02-20 11:54:41,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:41,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7673223] [2024-02-20 11:54:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:41,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:41,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:41,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7673223] [2024-02-20 11:54:41,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7673223] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:41,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56083469] [2024-02-20 11:54:41,864 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:54:41,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:41,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:41,866 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:41,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-02-20 11:54:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:41,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:41,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:41,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:41,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:42,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:42,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56083469] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:42,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:42,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-02-20 11:54:42,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784858500] [2024-02-20 11:54:42,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:42,009 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-20 11:54:42,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:42,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-20 11:54:42,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-02-20 11:54:42,011 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:42,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 987 transitions, 76992 flow. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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) [2024-02-20 11:54:42,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:42,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:42,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:43,238 INFO L124 PetriNetUnfolderBase]: 1066/1804 cut-off events. [2024-02-20 11:54:43,238 INFO L125 PetriNetUnfolderBase]: For 2335/2335 co-relation queries the response was YES. [2024-02-20 11:54:43,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71906 conditions, 1804 events. 1066/1804 cut-off events. For 2335/2335 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 9653 event pairs, 0 based on Foata normal form. 0/1412 useless extension candidates. Maximal degree in co-relation 70090. Up to 1707 conditions per place. [2024-02-20 11:54:43,272 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 693 selfloop transitions, 205 changer transitions 153/1052 dead transitions. [2024-02-20 11:54:43,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1052 transitions, 84161 flow [2024-02-20 11:54:43,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-20 11:54:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-20 11:54:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 137 transitions. [2024-02-20 11:54:43,273 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4241486068111455 [2024-02-20 11:54:43,273 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 368 predicate places. [2024-02-20 11:54:43,273 INFO L507 AbstractCegarLoop]: Abstraction has has 389 places, 1052 transitions, 84161 flow [2024-02-20 11:54:43,274 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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) [2024-02-20 11:54:43,274 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:43,274 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:43,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:43,484 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-02-20 11:54:43,484 INFO L432 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:43,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:43,485 INFO L85 PathProgramCache]: Analyzing trace with hash -170789226, now seen corresponding path program 26 times [2024-02-20 11:54:43,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:43,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198235942] [2024-02-20 11:54:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:43,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:43,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:43,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:43,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198235942] [2024-02-20 11:54:43,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198235942] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:43,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750543709] [2024-02-20 11:54:43,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:54:43,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:43,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:43,617 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:43,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-02-20 11:54:43,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:54:43,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:43,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:43,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:43,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:43,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750543709] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:43,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:43,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-02-20 11:54:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751686923] [2024-02-20 11:54:43,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:43,766 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-20 11:54:43,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:43,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-20 11:54:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-02-20 11:54:43,768 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:43,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 1052 transitions, 84161 flow. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 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) [2024-02-20 11:54:43,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:43,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:43,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:45,051 INFO L124 PetriNetUnfolderBase]: 1117/1893 cut-off events. [2024-02-20 11:54:45,052 INFO L125 PetriNetUnfolderBase]: For 2339/2339 co-relation queries the response was YES. [2024-02-20 11:54:45,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77357 conditions, 1893 events. 1117/1893 cut-off events. For 2339/2339 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 10264 event pairs, 0 based on Foata normal form. 0/1485 useless extension candidates. Maximal degree in co-relation 75496. Up to 1796 conditions per place. [2024-02-20 11:54:45,093 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 805 selfloop transitions, 147 changer transitions 153/1106 dead transitions. [2024-02-20 11:54:45,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 1106 transitions, 90691 flow [2024-02-20 11:54:45,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-20 11:54:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-20 11:54:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 106 transitions. [2024-02-20 11:54:45,095 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39849624060150374 [2024-02-20 11:54:45,096 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 381 predicate places. [2024-02-20 11:54:45,096 INFO L507 AbstractCegarLoop]: Abstraction has has 402 places, 1106 transitions, 90691 flow [2024-02-20 11:54:45,096 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 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) [2024-02-20 11:54:45,096 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:45,096 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:45,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:45,307 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-02-20 11:54:45,307 INFO L432 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:45,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:45,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1928879978, now seen corresponding path program 27 times [2024-02-20 11:54:45,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:45,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117340837] [2024-02-20 11:54:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:45,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:45,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:45,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:45,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117340837] [2024-02-20 11:54:45,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117340837] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:45,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462665062] [2024-02-20 11:54:45,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:54:45,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:45,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:45,362 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:45,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-02-20 11:54:45,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 11:54:45,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:45,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:45,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:45,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:45,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462665062] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:45,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:45,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-02-20 11:54:45,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250183657] [2024-02-20 11:54:45,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:45,534 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:54:45,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:45,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:54:45,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:54:45,535 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:45,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 1106 transitions, 90691 flow. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 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) [2024-02-20 11:54:45,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:45,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:45,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:46,946 INFO L124 PetriNetUnfolderBase]: 1113/1889 cut-off events. [2024-02-20 11:54:46,946 INFO L125 PetriNetUnfolderBase]: For 2337/2337 co-relation queries the response was YES. [2024-02-20 11:54:46,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79080 conditions, 1889 events. 1113/1889 cut-off events. For 2337/2337 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 10265 event pairs, 0 based on Foata normal form. 0/1485 useless extension candidates. Maximal degree in co-relation 77174. Up to 1792 conditions per place. [2024-02-20 11:54:46,977 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 787 selfloop transitions, 159 changer transitions 158/1105 dead transitions. [2024-02-20 11:54:46,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1105 transitions, 92817 flow [2024-02-20 11:54:46,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-20 11:54:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-20 11:54:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 116 transitions. [2024-02-20 11:54:46,978 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43609022556390975 [2024-02-20 11:54:46,979 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 394 predicate places. [2024-02-20 11:54:46,979 INFO L507 AbstractCegarLoop]: Abstraction has has 415 places, 1105 transitions, 92817 flow [2024-02-20 11:54:46,979 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 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) [2024-02-20 11:54:46,979 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:46,979 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:46,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:47,189 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:47,189 INFO L432 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:47,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:47,190 INFO L85 PathProgramCache]: Analyzing trace with hash -758534548, now seen corresponding path program 28 times [2024-02-20 11:54:47,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:47,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430677705] [2024-02-20 11:54:47,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:47,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:47,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:47,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430677705] [2024-02-20 11:54:47,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430677705] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:47,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664572458] [2024-02-20 11:54:47,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:54:47,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:47,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:47,264 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:47,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-02-20 11:54:47,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:54:47,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:47,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:47,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:47,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:47,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664572458] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:47,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:47,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-02-20 11:54:47,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74641899] [2024-02-20 11:54:47,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:47,431 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:54:47,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:47,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:54:47,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:54:47,433 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:47,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 1105 transitions, 92817 flow. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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) [2024-02-20 11:54:47,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:47,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:47,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:48,757 INFO L124 PetriNetUnfolderBase]: 1181/1996 cut-off events. [2024-02-20 11:54:48,757 INFO L125 PetriNetUnfolderBase]: For 2427/2427 co-relation queries the response was YES. [2024-02-20 11:54:48,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85608 conditions, 1996 events. 1181/1996 cut-off events. For 2427/2427 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10935 event pairs, 0 based on Foata normal form. 0/1570 useless extension candidates. Maximal degree in co-relation 83745. Up to 1900 conditions per place. [2024-02-20 11:54:48,805 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 801 selfloop transitions, 208 changer transitions 158/1168 dead transitions. [2024-02-20 11:54:48,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 1168 transitions, 100437 flow [2024-02-20 11:54:48,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-02-20 11:54:48,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-02-20 11:54:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 167 transitions. [2024-02-20 11:54:48,806 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38215102974828374 [2024-02-20 11:54:48,806 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 416 predicate places. [2024-02-20 11:54:48,806 INFO L507 AbstractCegarLoop]: Abstraction has has 437 places, 1168 transitions, 100437 flow [2024-02-20 11:54:48,807 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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) [2024-02-20 11:54:48,807 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:48,807 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:48,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-02-20 11:54:49,010 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-02-20 11:54:49,010 INFO L432 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:49,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:49,011 INFO L85 PathProgramCache]: Analyzing trace with hash -754006441, now seen corresponding path program 29 times [2024-02-20 11:54:49,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:49,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668945650] [2024-02-20 11:54:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:49,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:49,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668945650] [2024-02-20 11:54:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668945650] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:49,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690924893] [2024-02-20 11:54:49,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:54:49,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:49,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:49,056 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:49,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-02-20 11:54:49,181 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 11:54:49,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:49,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:49,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:49,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:49,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690924893] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:49,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:49,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-02-20 11:54:49,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386394741] [2024-02-20 11:54:49,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:49,240 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:54:49,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:49,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:54:49,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:54:49,242 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:49,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1168 transitions, 100437 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:49,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:49,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:49,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:50,576 INFO L124 PetriNetUnfolderBase]: 1182/2001 cut-off events. [2024-02-20 11:54:50,576 INFO L125 PetriNetUnfolderBase]: For 2430/2430 co-relation queries the response was YES. [2024-02-20 11:54:50,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87824 conditions, 2001 events. 1182/2001 cut-off events. For 2430/2430 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 11005 event pairs, 0 based on Foata normal form. 0/1581 useless extension candidates. Maximal degree in co-relation 85918. Up to 1905 conditions per place. [2024-02-20 11:54:50,623 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 817 selfloop transitions, 196 changer transitions 158/1172 dead transitions. [2024-02-20 11:54:50,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 1172 transitions, 103126 flow [2024-02-20 11:54:50,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-20 11:54:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-20 11:54:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 142 transitions. [2024-02-20 11:54:50,624 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43962848297213625 [2024-02-20 11:54:50,625 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 432 predicate places. [2024-02-20 11:54:50,625 INFO L507 AbstractCegarLoop]: Abstraction has has 453 places, 1172 transitions, 103126 flow [2024-02-20 11:54:50,625 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:50,625 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:50,625 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:50,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-02-20 11:54:50,828 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:50,828 INFO L432 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:50,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:50,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1848955433, now seen corresponding path program 30 times [2024-02-20 11:54:50,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:50,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804174407] [2024-02-20 11:54:50,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:50,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:50,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:50,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804174407] [2024-02-20 11:54:50,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804174407] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:50,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617697068] [2024-02-20 11:54:50,900 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:54:50,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:50,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:50,917 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:50,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-02-20 11:54:51,009 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:54:51,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:51,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:54:51,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:51,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:51,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617697068] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:51,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:51,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-02-20 11:54:51,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584368535] [2024-02-20 11:54:51,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:51,074 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-20 11:54:51,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:51,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-20 11:54:51,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-02-20 11:54:51,075 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:54:51,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 1172 transitions, 103126 flow. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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) [2024-02-20 11:54:51,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:51,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:54:51,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:52,460 INFO L124 PetriNetUnfolderBase]: 1178/1988 cut-off events. [2024-02-20 11:54:52,460 INFO L125 PetriNetUnfolderBase]: For 2332/2332 co-relation queries the response was YES. [2024-02-20 11:54:52,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89281 conditions, 1988 events. 1178/1988 cut-off events. For 2332/2332 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10875 event pairs, 0 based on Foata normal form. 0/1572 useless extension candidates. Maximal degree in co-relation 87424. Up to 1893 conditions per place. [2024-02-20 11:54:52,510 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 889 selfloop transitions, 111 changer transitions 162/1163 dead transitions. [2024-02-20 11:54:52,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1163 transitions, 104652 flow [2024-02-20 11:54:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:54:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:54:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 94 transitions. [2024-02-20 11:54:52,511 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2024-02-20 11:54:52,512 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 443 predicate places. [2024-02-20 11:54:52,512 INFO L507 AbstractCegarLoop]: Abstraction has has 464 places, 1163 transitions, 104652 flow [2024-02-20 11:54:52,512 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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) [2024-02-20 11:54:52,512 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:52,512 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:52,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:52,724 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:52,724 INFO L432 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:52,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:52,725 INFO L85 PathProgramCache]: Analyzing trace with hash 812925534, now seen corresponding path program 31 times [2024-02-20 11:54:52,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:52,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403418239] [2024-02-20 11:54:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:52,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:52,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:52,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403418239] [2024-02-20 11:54:52,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403418239] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:52,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937870755] [2024-02-20 11:54:52,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:54:52,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:52,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:52,953 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:52,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-02-20 11:54:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:53,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:54:53,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:53,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:53,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937870755] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:53,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:53,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-02-20 11:54:53,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168295538] [2024-02-20 11:54:53,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:53,258 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:54:53,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:53,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:54:53,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:54:53,259 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:54:53,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 1163 transitions, 104652 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2024-02-20 11:54:53,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:53,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:54:53,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:55,077 INFO L124 PetriNetUnfolderBase]: 1310/2269 cut-off events. [2024-02-20 11:54:55,077 INFO L125 PetriNetUnfolderBase]: For 3464/3464 co-relation queries the response was YES. [2024-02-20 11:54:55,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104006 conditions, 2269 events. 1310/2269 cut-off events. For 3464/3464 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 13137 event pairs, 0 based on Foata normal form. 2/1819 useless extension candidates. Maximal degree in co-relation 101362. Up to 2171 conditions per place. [2024-02-20 11:54:55,132 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1021 selfloop transitions, 101 changer transitions 193/1326 dead transitions. [2024-02-20 11:54:55,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 1326 transitions, 122046 flow [2024-02-20 11:54:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:54:55,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:54:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-02-20 11:54:55,133 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6008771929824561 [2024-02-20 11:54:55,134 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 454 predicate places. [2024-02-20 11:54:55,134 INFO L507 AbstractCegarLoop]: Abstraction has has 475 places, 1326 transitions, 122046 flow [2024-02-20 11:54:55,134 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2024-02-20 11:54:55,134 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:55,134 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:55,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:55,344 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-02-20 11:54:55,345 INFO L432 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:55,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:55,345 INFO L85 PathProgramCache]: Analyzing trace with hash -286627448, now seen corresponding path program 32 times [2024-02-20 11:54:55,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:55,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653480669] [2024-02-20 11:54:55,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:55,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:55,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:55,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653480669] [2024-02-20 11:54:55,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653480669] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:55,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076404250] [2024-02-20 11:54:55,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:54:55,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:55,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:55,573 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:55,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-02-20 11:54:55,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:54:55,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:55,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:54:55,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:55,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:55,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076404250] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:55,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:55,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-02-20 11:54:55,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533119452] [2024-02-20 11:54:55,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:55,939 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-20 11:54:55,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:55,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-20 11:54:55,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-02-20 11:54:55,941 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:54:55,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 1326 transitions, 122046 flow. Second operand has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 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) [2024-02-20 11:54:55,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:55,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:54:55,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:54:58,141 INFO L124 PetriNetUnfolderBase]: 1401/2449 cut-off events. [2024-02-20 11:54:58,141 INFO L125 PetriNetUnfolderBase]: For 4401/4401 co-relation queries the response was YES. [2024-02-20 11:54:58,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114571 conditions, 2449 events. 1401/2449 cut-off events. For 4401/4401 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 14603 event pairs, 0 based on Foata normal form. 1/1958 useless extension candidates. Maximal degree in co-relation 111488. Up to 2348 conditions per place. [2024-02-20 11:54:58,207 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1097 selfloop transitions, 119 changer transitions 206/1433 dead transitions. [2024-02-20 11:54:58,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 1433 transitions, 134783 flow [2024-02-20 11:54:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:54:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:54:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-02-20 11:54:58,208 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6602870813397129 [2024-02-20 11:54:58,208 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 464 predicate places. [2024-02-20 11:54:58,208 INFO L507 AbstractCegarLoop]: Abstraction has has 485 places, 1433 transitions, 134783 flow [2024-02-20 11:54:58,208 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 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) [2024-02-20 11:54:58,208 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:54:58,209 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:54:58,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-02-20 11:54:58,419 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-02-20 11:54:58,419 INFO L432 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:54:58,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:54:58,420 INFO L85 PathProgramCache]: Analyzing trace with hash 32405986, now seen corresponding path program 33 times [2024-02-20 11:54:58,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:54:58,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363234076] [2024-02-20 11:54:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:54:58,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:54:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:54:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:58,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:54:58,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363234076] [2024-02-20 11:54:58,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363234076] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:54:58,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374239249] [2024-02-20 11:54:58,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:54:58,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:54:58,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:54:58,752 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:54:58,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-02-20 11:54:58,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:54:58,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:54:58,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:54:58,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:54:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:59,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:54:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:54:59,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374239249] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:54:59,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:54:59,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-02-20 11:54:59,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666473981] [2024-02-20 11:54:59,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:54:59,217 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 11:54:59,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:54:59,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 11:54:59,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:54:59,219 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:54:59,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 1433 transitions, 134783 flow. Second operand has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:54:59,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:54:59,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:54:59,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:01,682 INFO L124 PetriNetUnfolderBase]: 1401/2447 cut-off events. [2024-02-20 11:55:01,682 INFO L125 PetriNetUnfolderBase]: For 5270/5270 co-relation queries the response was YES. [2024-02-20 11:55:01,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116923 conditions, 2447 events. 1401/2447 cut-off events. For 5270/5270 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 14568 event pairs, 0 based on Foata normal form. 1/1956 useless extension candidates. Maximal degree in co-relation 113826. Up to 2347 conditions per place. [2024-02-20 11:55:01,730 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1091 selfloop transitions, 119 changer transitions 211/1432 dead transitions. [2024-02-20 11:55:01,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 1432 transitions, 137523 flow [2024-02-20 11:55:01,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:55:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:55:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-02-20 11:55:01,731 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-02-20 11:55:01,732 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 475 predicate places. [2024-02-20 11:55:01,732 INFO L507 AbstractCegarLoop]: Abstraction has has 496 places, 1432 transitions, 137523 flow [2024-02-20 11:55:01,732 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:01,732 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:01,732 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:01,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:01,934 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-02-20 11:55:01,934 INFO L432 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:01,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2140743232, now seen corresponding path program 34 times [2024-02-20 11:55:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547760367] [2024-02-20 11:55:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:02,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:02,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547760367] [2024-02-20 11:55:02,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547760367] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:02,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489852496] [2024-02-20 11:55:02,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:55:02,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:02,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:02,141 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:02,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-02-20 11:55:02,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:55:02,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:02,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:55:02,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:02,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:02,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489852496] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:02,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:02,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-02-20 11:55:02,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547189023] [2024-02-20 11:55:02,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:02,505 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-20 11:55:02,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:02,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-20 11:55:02,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-02-20 11:55:02,507 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:55:02,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1432 transitions, 137523 flow. Second operand has 20 states, 20 states have (on average 7.0) internal successors, (140), 20 states have internal predecessors, (140), 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) [2024-02-20 11:55:02,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:02,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:55:02,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:04,778 INFO L124 PetriNetUnfolderBase]: 1401/2443 cut-off events. [2024-02-20 11:55:04,778 INFO L125 PetriNetUnfolderBase]: For 6223/6223 co-relation queries the response was YES. [2024-02-20 11:55:04,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119223 conditions, 2443 events. 1401/2443 cut-off events. For 6223/6223 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 14563 event pairs, 0 based on Foata normal form. 2/1953 useless extension candidates. Maximal degree in co-relation 116164. Up to 2345 conditions per place. [2024-02-20 11:55:04,831 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1077 selfloop transitions, 117 changer transitions 225/1430 dead transitions. [2024-02-20 11:55:04,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 1430 transitions, 140161 flow [2024-02-20 11:55:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:55:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:55:04,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-02-20 11:55:04,832 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-02-20 11:55:04,832 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 485 predicate places. [2024-02-20 11:55:04,832 INFO L507 AbstractCegarLoop]: Abstraction has has 506 places, 1430 transitions, 140161 flow [2024-02-20 11:55:04,832 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 20 states have internal predecessors, (140), 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) [2024-02-20 11:55:04,832 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:04,833 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:04,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-02-20 11:55:05,041 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:05,042 INFO L432 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:05,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash -982698846, now seen corresponding path program 35 times [2024-02-20 11:55:05,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:05,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900581995] [2024-02-20 11:55:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:05,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:05,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:05,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900581995] [2024-02-20 11:55:05,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900581995] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:05,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145326213] [2024-02-20 11:55:05,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:55:05,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:05,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:05,238 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:05,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-02-20 11:55:05,325 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 11:55:05,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:05,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:55:05,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:05,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:05,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145326213] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:05,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:05,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-02-20 11:55:05,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399676740] [2024-02-20 11:55:05,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:05,591 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 11:55:05,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:05,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 11:55:05,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-02-20 11:55:05,592 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:55:05,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 1430 transitions, 140161 flow. Second operand has 19 states, 19 states have (on average 7.105263157894737) internal successors, (135), 19 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:05,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:05,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:55:05,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:08,258 INFO L124 PetriNetUnfolderBase]: 1472/2580 cut-off events. [2024-02-20 11:55:08,259 INFO L125 PetriNetUnfolderBase]: For 7269/7269 co-relation queries the response was YES. [2024-02-20 11:55:08,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128335 conditions, 2580 events. 1472/2580 cut-off events. For 7269/7269 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 15615 event pairs, 0 based on Foata normal form. 1/2051 useless extension candidates. Maximal degree in co-relation 124859. Up to 2479 conditions per place. [2024-02-20 11:55:08,331 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1178 selfloop transitions, 90 changer transitions 233/1512 dead transitions. [2024-02-20 11:55:08,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1512 transitions, 151224 flow [2024-02-20 11:55:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:55:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:55:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-02-20 11:55:08,332 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6368421052631579 [2024-02-20 11:55:08,332 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 494 predicate places. [2024-02-20 11:55:08,332 INFO L507 AbstractCegarLoop]: Abstraction has has 515 places, 1512 transitions, 151224 flow [2024-02-20 11:55:08,333 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.105263157894737) internal successors, (135), 19 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:08,333 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:08,333 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:08,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-02-20 11:55:08,543 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-02-20 11:55:08,543 INFO L432 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:08,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash 884897770, now seen corresponding path program 36 times [2024-02-20 11:55:08,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:08,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492167732] [2024-02-20 11:55:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:08,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:08,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:08,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492167732] [2024-02-20 11:55:08,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492167732] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:08,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097650762] [2024-02-20 11:55:08,752 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:55:08,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:08,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:08,756 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:08,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-02-20 11:55:08,852 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 11:55:08,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:08,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:55:08,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:08,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:09,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097650762] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:09,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:09,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-02-20 11:55:09,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917715633] [2024-02-20 11:55:09,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:09,164 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 11:55:09,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:09,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 11:55:09,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-02-20 11:55:09,165 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:55:09,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1512 transitions, 151224 flow. Second operand has 19 states, 19 states have (on average 7.0) internal successors, (133), 19 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:09,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:09,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:55:09,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:12,387 INFO L124 PetriNetUnfolderBase]: 1472/2578 cut-off events. [2024-02-20 11:55:12,387 INFO L125 PetriNetUnfolderBase]: For 8382/8382 co-relation queries the response was YES. [2024-02-20 11:55:12,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130815 conditions, 2578 events. 1472/2578 cut-off events. For 8382/8382 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 15589 event pairs, 0 based on Foata normal form. 1/2049 useless extension candidates. Maximal degree in co-relation 127324. Up to 2478 conditions per place. [2024-02-20 11:55:12,443 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1172 selfloop transitions, 89 changer transitions 239/1511 dead transitions. [2024-02-20 11:55:12,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 1511 transitions, 154116 flow [2024-02-20 11:55:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:55:12,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:55:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-02-20 11:55:12,444 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6263157894736842 [2024-02-20 11:55:12,445 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 503 predicate places. [2024-02-20 11:55:12,445 INFO L507 AbstractCegarLoop]: Abstraction has has 524 places, 1511 transitions, 154116 flow [2024-02-20 11:55:12,445 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.0) internal successors, (133), 19 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:12,445 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:12,445 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:12,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:12,655 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-02-20 11:55:12,656 INFO L432 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:12,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:12,657 INFO L85 PathProgramCache]: Analyzing trace with hash 727914462, now seen corresponding path program 37 times [2024-02-20 11:55:12,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:12,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853327965] [2024-02-20 11:55:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:12,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:12,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853327965] [2024-02-20 11:55:12,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853327965] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797395989] [2024-02-20 11:55:12,816 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:55:12,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:12,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:12,833 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:12,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-02-20 11:55:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:12,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:55:12,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:13,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:13,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797395989] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:13,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:13,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-02-20 11:55:13,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732485073] [2024-02-20 11:55:13,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:13,273 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 11:55:13,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:13,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 11:55:13,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:55:13,274 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:55:13,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1511 transitions, 154116 flow. Second operand has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 17 states have internal predecessors, (123), 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) [2024-02-20 11:55:13,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:13,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:55:13,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:16,090 INFO L124 PetriNetUnfolderBase]: 1472/2576 cut-off events. [2024-02-20 11:55:16,091 INFO L125 PetriNetUnfolderBase]: For 9255/9255 co-relation queries the response was YES. [2024-02-20 11:55:16,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133293 conditions, 2576 events. 1472/2576 cut-off events. For 9255/9255 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 15582 event pairs, 0 based on Foata normal form. 1/2047 useless extension candidates. Maximal degree in co-relation 129789. Up to 2477 conditions per place. [2024-02-20 11:55:16,145 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1181 selfloop transitions, 74 changer transitions 244/1510 dead transitions. [2024-02-20 11:55:16,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 1510 transitions, 157004 flow [2024-02-20 11:55:16,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:55:16,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:55:16,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-02-20 11:55:16,146 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5894736842105263 [2024-02-20 11:55:16,147 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 512 predicate places. [2024-02-20 11:55:16,147 INFO L507 AbstractCegarLoop]: Abstraction has has 533 places, 1510 transitions, 157004 flow [2024-02-20 11:55:16,147 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 17 states have internal predecessors, (123), 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) [2024-02-20 11:55:16,147 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:16,147 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:16,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:16,357 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:16,358 INFO L432 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:16,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:16,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1990381714, now seen corresponding path program 38 times [2024-02-20 11:55:16,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:16,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248530939] [2024-02-20 11:55:16,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:16,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:16,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:16,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248530939] [2024-02-20 11:55:16,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248530939] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:16,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126243615] [2024-02-20 11:55:16,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:55:16,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:16,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:16,499 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:16,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-02-20 11:55:16,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:55:16,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:16,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:55:16,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:55:16,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:16,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126243615] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:16,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:16,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2024-02-20 11:55:16,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426806134] [2024-02-20 11:55:16,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:16,919 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 11:55:16,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:16,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 11:55:16,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:55:16,920 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:55:16,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 1510 transitions, 157004 flow. Second operand has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:16,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:16,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:55:16,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:19,674 INFO L124 PetriNetUnfolderBase]: 1514/2671 cut-off events. [2024-02-20 11:55:19,674 INFO L125 PetriNetUnfolderBase]: For 10502/10502 co-relation queries the response was YES. [2024-02-20 11:55:19,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140764 conditions, 2671 events. 1514/2671 cut-off events. For 10502/10502 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 16422 event pairs, 0 based on Foata normal form. 1/2122 useless extension candidates. Maximal degree in co-relation 136925. Up to 2570 conditions per place. [2024-02-20 11:55:19,747 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1249 selfloop transitions, 53 changer transitions 255/1568 dead transitions. [2024-02-20 11:55:19,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 1568 transitions, 166172 flow [2024-02-20 11:55:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:55:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:55:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-02-20 11:55:19,748 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2024-02-20 11:55:19,748 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 517 predicate places. [2024-02-20 11:55:19,748 INFO L507 AbstractCegarLoop]: Abstraction has has 538 places, 1568 transitions, 166172 flow [2024-02-20 11:55:19,753 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:19,754 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:19,754 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:19,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-02-20 11:55:19,961 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-02-20 11:55:19,961 INFO L432 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:19,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:19,961 INFO L85 PathProgramCache]: Analyzing trace with hash 974844544, now seen corresponding path program 39 times [2024-02-20 11:55:19,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:19,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018075830] [2024-02-20 11:55:19,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:19,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:20,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:20,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018075830] [2024-02-20 11:55:20,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018075830] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:20,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615021366] [2024-02-20 11:55:20,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:55:20,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:20,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:20,107 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:20,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-02-20 11:55:20,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 11:55:20,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:20,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:55:20,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:20,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:20,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615021366] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:20,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:20,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-02-20 11:55:20,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996834255] [2024-02-20 11:55:20,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:20,506 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 11:55:20,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:20,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 11:55:20,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:55:20,507 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:55:20,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1568 transitions, 166172 flow. Second operand has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:20,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:20,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:55:20,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:23,897 INFO L124 PetriNetUnfolderBase]: 1662/2949 cut-off events. [2024-02-20 11:55:23,898 INFO L125 PetriNetUnfolderBase]: For 12996/12996 co-relation queries the response was YES. [2024-02-20 11:55:23,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158135 conditions, 2949 events. 1662/2949 cut-off events. For 12996/12996 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 18565 event pairs, 0 based on Foata normal form. 2/2335 useless extension candidates. Maximal degree in co-relation 153676. Up to 2824 conditions per place. [2024-02-20 11:55:23,967 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1336 selfloop transitions, 115 changer transitions 273/1735 dead transitions. [2024-02-20 11:55:23,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 1735 transitions, 187362 flow [2024-02-20 11:55:23,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:55:23,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:55:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-02-20 11:55:23,968 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6507177033492823 [2024-02-20 11:55:23,968 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 527 predicate places. [2024-02-20 11:55:23,968 INFO L507 AbstractCegarLoop]: Abstraction has has 548 places, 1735 transitions, 187362 flow [2024-02-20 11:55:23,969 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:23,969 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:23,969 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:23,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:24,179 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:24,180 INFO L432 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:24,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:24,181 INFO L85 PathProgramCache]: Analyzing trace with hash -120104448, now seen corresponding path program 40 times [2024-02-20 11:55:24,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:24,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899913732] [2024-02-20 11:55:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:24,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:24,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:24,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899913732] [2024-02-20 11:55:24,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899913732] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:24,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427820881] [2024-02-20 11:55:24,474 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:55:24,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:24,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:24,475 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:24,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-02-20 11:55:24,584 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:55:24,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:24,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:55:24,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:24,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:24,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427820881] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:24,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:24,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-02-20 11:55:24,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28272958] [2024-02-20 11:55:24,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:24,827 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 11:55:24,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:24,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 11:55:24,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:55:24,829 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:55:24,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 1735 transitions, 187362 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 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) [2024-02-20 11:55:24,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:24,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:55:24,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:28,788 INFO L124 PetriNetUnfolderBase]: 1669/2976 cut-off events. [2024-02-20 11:55:28,788 INFO L125 PetriNetUnfolderBase]: For 14056/14056 co-relation queries the response was YES. [2024-02-20 11:55:28,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162517 conditions, 2976 events. 1669/2976 cut-off events. For 14056/14056 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 18896 event pairs, 0 based on Foata normal form. 2/2358 useless extension candidates. Maximal degree in co-relation 157866. Up to 2851 conditions per place. [2024-02-20 11:55:28,860 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1348 selfloop transitions, 99 changer transitions 297/1755 dead transitions. [2024-02-20 11:55:28,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 1755 transitions, 193014 flow [2024-02-20 11:55:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:55:28,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:55:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-02-20 11:55:28,861 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-02-20 11:55:28,862 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 538 predicate places. [2024-02-20 11:55:28,862 INFO L507 AbstractCegarLoop]: Abstraction has has 559 places, 1755 transitions, 193014 flow [2024-02-20 11:55:28,862 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 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) [2024-02-20 11:55:28,862 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:28,862 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:28,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:29,073 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:29,074 INFO L432 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:29,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:29,074 INFO L85 PathProgramCache]: Analyzing trace with hash 389511522, now seen corresponding path program 41 times [2024-02-20 11:55:29,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:29,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606987841] [2024-02-20 11:55:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:29,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:29,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:29,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606987841] [2024-02-20 11:55:29,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606987841] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:29,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924435602] [2024-02-20 11:55:29,254 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:55:29,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:29,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:29,256 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:29,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-02-20 11:55:29,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 11:55:29,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:29,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:55:29,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:29,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:29,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:29,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924435602] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:29,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:29,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2024-02-20 11:55:29,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079416216] [2024-02-20 11:55:29,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:29,710 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 11:55:29,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:29,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 11:55:29,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:55:29,710 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:55:29,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 1755 transitions, 193014 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:29,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:29,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:55:29,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:33,804 INFO L124 PetriNetUnfolderBase]: 1709/3058 cut-off events. [2024-02-20 11:55:33,805 INFO L125 PetriNetUnfolderBase]: For 15628/15628 co-relation queries the response was YES. [2024-02-20 11:55:33,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169983 conditions, 3058 events. 1709/3058 cut-off events. For 15628/15628 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 19608 event pairs, 0 based on Foata normal form. 1/2425 useless extension candidates. Maximal degree in co-relation 165079. Up to 2932 conditions per place. [2024-02-20 11:55:33,878 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1415 selfloop transitions, 76 changer transitions 302/1804 dead transitions. [2024-02-20 11:55:33,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 1804 transitions, 202009 flow [2024-02-20 11:55:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:55:33,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:55:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-02-20 11:55:33,879 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-02-20 11:55:33,879 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 547 predicate places. [2024-02-20 11:55:33,879 INFO L507 AbstractCegarLoop]: Abstraction has has 568 places, 1804 transitions, 202009 flow [2024-02-20 11:55:33,879 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:33,880 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:33,887 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:33,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:34,092 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-02-20 11:55:34,092 INFO L432 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:34,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1609509444, now seen corresponding path program 42 times [2024-02-20 11:55:34,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:34,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850532535] [2024-02-20 11:55:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:34,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:34,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:34,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850532535] [2024-02-20 11:55:34,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850532535] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:34,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915535487] [2024-02-20 11:55:34,243 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:55:34,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:34,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:34,244 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:34,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-02-20 11:55:34,362 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:55:34,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:34,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:55:34,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:34,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:34,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915535487] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:34,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:34,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-02-20 11:55:34,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053515681] [2024-02-20 11:55:34,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:34,620 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 11:55:34,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:34,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 11:55:34,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:55:34,621 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:55:34,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 1804 transitions, 202009 flow. Second operand has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:34,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:34,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:55:34,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:39,042 INFO L124 PetriNetUnfolderBase]: 1709/3056 cut-off events. [2024-02-20 11:55:39,042 INFO L125 PetriNetUnfolderBase]: For 17271/17271 co-relation queries the response was YES. [2024-02-20 11:55:39,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172926 conditions, 3056 events. 1709/3056 cut-off events. For 17271/17271 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 19581 event pairs, 0 based on Foata normal form. 1/2423 useless extension candidates. Maximal degree in co-relation 167995. Up to 2931 conditions per place. [2024-02-20 11:55:39,124 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1368 selfloop transitions, 117 changer transitions 307/1803 dead transitions. [2024-02-20 11:55:39,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 1803 transitions, 205473 flow [2024-02-20 11:55:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:55:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:55:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-02-20 11:55:39,125 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-02-20 11:55:39,126 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 558 predicate places. [2024-02-20 11:55:39,126 INFO L507 AbstractCegarLoop]: Abstraction has has 579 places, 1803 transitions, 205473 flow [2024-02-20 11:55:39,126 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:39,126 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:39,126 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:39,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:39,341 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-02-20 11:55:39,341 INFO L432 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:39,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:39,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1452526136, now seen corresponding path program 43 times [2024-02-20 11:55:39,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:39,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280938442] [2024-02-20 11:55:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:39,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:39,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:39,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280938442] [2024-02-20 11:55:39,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280938442] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:39,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601570034] [2024-02-20 11:55:39,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:55:39,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:39,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:39,470 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:39,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-02-20 11:55:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:39,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:55:39,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:39,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:39,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601570034] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:39,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:39,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-02-20 11:55:39,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541578204] [2024-02-20 11:55:39,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:39,796 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 11:55:39,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:39,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 11:55:39,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:55:39,797 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:55:39,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 1803 transitions, 205473 flow. Second operand has 18 states, 18 states have (on average 7.055555555555555) internal successors, (127), 18 states have internal predecessors, (127), 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) [2024-02-20 11:55:39,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:39,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:55:39,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:44,276 INFO L124 PetriNetUnfolderBase]: 1709/3054 cut-off events. [2024-02-20 11:55:44,276 INFO L125 PetriNetUnfolderBase]: For 19657/19657 co-relation queries the response was YES. [2024-02-20 11:55:44,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175867 conditions, 3054 events. 1709/3054 cut-off events. For 19657/19657 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 19567 event pairs, 0 based on Foata normal form. 1/2421 useless extension candidates. Maximal degree in co-relation 170911. Up to 2930 conditions per place. [2024-02-20 11:55:44,480 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1363 selfloop transitions, 116 changer transitions 312/1802 dead transitions. [2024-02-20 11:55:44,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 1802 transitions, 208933 flow [2024-02-20 11:55:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:55:44,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:55:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-02-20 11:55:44,481 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6172248803827751 [2024-02-20 11:55:44,482 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 568 predicate places. [2024-02-20 11:55:44,482 INFO L507 AbstractCegarLoop]: Abstraction has has 589 places, 1802 transitions, 208933 flow [2024-02-20 11:55:44,482 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.055555555555555) internal successors, (127), 18 states have internal predecessors, (127), 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) [2024-02-20 11:55:44,482 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:44,482 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:44,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:44,692 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-02-20 11:55:44,693 INFO L432 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:44,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash 70478088, now seen corresponding path program 44 times [2024-02-20 11:55:44,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:44,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506508121] [2024-02-20 11:55:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:44,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:44,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:44,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506508121] [2024-02-20 11:55:44,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506508121] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:44,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328099893] [2024-02-20 11:55:44,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:55:44,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:44,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:44,868 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:44,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-02-20 11:55:44,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:55:44,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:44,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:55:44,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:45,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:45,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:45,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328099893] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:45,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:45,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-02-20 11:55:45,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773293305] [2024-02-20 11:55:45,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:45,233 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 11:55:45,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:45,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 11:55:45,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-02-20 11:55:45,234 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:55:45,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 1802 transitions, 208933 flow. Second operand has 19 states, 19 states have (on average 7.0) internal successors, (133), 19 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:45,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:45,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:55:45,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:49,627 INFO L124 PetriNetUnfolderBase]: 1761/3142 cut-off events. [2024-02-20 11:55:49,627 INFO L125 PetriNetUnfolderBase]: For 20831/20831 co-relation queries the response was YES. [2024-02-20 11:55:49,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184006 conditions, 3142 events. 1761/3142 cut-off events. For 20831/20831 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 20188 event pairs, 0 based on Foata normal form. 1/2479 useless extension candidates. Maximal degree in co-relation 178787. Up to 3017 conditions per place. [2024-02-20 11:55:49,705 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1425 selfloop transitions, 96 changer transitions 322/1854 dead transitions. [2024-02-20 11:55:49,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 1854 transitions, 218661 flow [2024-02-20 11:55:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:55:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:55:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-02-20 11:55:49,707 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6368421052631579 [2024-02-20 11:55:49,707 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 577 predicate places. [2024-02-20 11:55:49,707 INFO L507 AbstractCegarLoop]: Abstraction has has 598 places, 1854 transitions, 218661 flow [2024-02-20 11:55:49,707 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.0) internal successors, (133), 19 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:49,707 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:49,707 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:49,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:49,918 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:49,918 INFO L432 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:49,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:49,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1797118528, now seen corresponding path program 45 times [2024-02-20 11:55:49,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:49,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483335905] [2024-02-20 11:55:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:49,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:50,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:50,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483335905] [2024-02-20 11:55:50,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483335905] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:50,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132833549] [2024-02-20 11:55:50,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:55:50,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:50,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:50,119 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:50,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-02-20 11:55:50,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 11:55:50,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:50,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 11:55:50,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:50,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:50,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132833549] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:50,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:50,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2024-02-20 11:55:50,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326134702] [2024-02-20 11:55:50,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:50,481 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 11:55:50,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 11:55:50,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:55:50,481 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2024-02-20 11:55:50,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 1854 transitions, 218661 flow. Second operand has 18 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 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) [2024-02-20 11:55:50,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:50,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2024-02-20 11:55:50,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:55,550 INFO L124 PetriNetUnfolderBase]: 1761/3140 cut-off events. [2024-02-20 11:55:55,551 INFO L125 PetriNetUnfolderBase]: For 22726/22726 co-relation queries the response was YES. [2024-02-20 11:55:55,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187031 conditions, 3140 events. 1761/3140 cut-off events. For 22726/22726 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 20193 event pairs, 0 based on Foata normal form. 1/2477 useless extension candidates. Maximal degree in co-relation 181787. Up to 3016 conditions per place. [2024-02-20 11:55:55,640 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1420 selfloop transitions, 93 changer transitions 329/1853 dead transitions. [2024-02-20 11:55:55,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 1853 transitions, 222219 flow [2024-02-20 11:55:55,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:55:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:55:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-02-20 11:55:55,649 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6263157894736842 [2024-02-20 11:55:55,649 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 586 predicate places. [2024-02-20 11:55:55,650 INFO L507 AbstractCegarLoop]: Abstraction has has 607 places, 1853 transitions, 222219 flow [2024-02-20 11:55:55,650 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 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) [2024-02-20 11:55:55,650 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:55,650 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:55:55,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:55,860 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-02-20 11:55:55,861 INFO L432 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:55:55,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:55,861 INFO L85 PathProgramCache]: Analyzing trace with hash -568379137, now seen corresponding path program 46 times [2024-02-20 11:55:55,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:55,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528934600] [2024-02-20 11:55:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:55,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:55,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:55,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528934600] [2024-02-20 11:55:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528934600] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:55,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722194107] [2024-02-20 11:55:55,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:55:55,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:55,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:55,961 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:55:55,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-02-20 11:55:56,066 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:55:56,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:56,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:55:56,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:56,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:56,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722194107] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:56,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:56,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-02-20 11:55:56,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560541278] [2024-02-20 11:55:56,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:56,155 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 11:55:56,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:56,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 11:55:56,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:55:56,158 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:55:56,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 1853 transitions, 222219 flow. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:55:56,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:56,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:55:56,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:02,046 INFO L124 PetriNetUnfolderBase]: 2198/3985 cut-off events. [2024-02-20 11:56:02,046 INFO L125 PetriNetUnfolderBase]: For 23642/23642 co-relation queries the response was YES. [2024-02-20 11:56:02,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241427 conditions, 3985 events. 2198/3985 cut-off events. For 23642/23642 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 26948 event pairs, 0 based on Foata normal form. 0/3099 useless extension candidates. Maximal degree in co-relation 234112. Up to 3855 conditions per place. [2024-02-20 11:56:02,153 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1622 selfloop transitions, 252 changer transitions 491/2366 dead transitions. [2024-02-20 11:56:02,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 2366 transitions, 288657 flow [2024-02-20 11:56:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:56:02,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:56:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-02-20 11:56:02,155 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5321637426900585 [2024-02-20 11:56:02,155 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 594 predicate places. [2024-02-20 11:56:02,155 INFO L507 AbstractCegarLoop]: Abstraction has has 615 places, 2366 transitions, 288657 flow [2024-02-20 11:56:02,155 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:02,155 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:02,155 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:56:02,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:02,365 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-02-20 11:56:02,366 INFO L432 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:02,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:02,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1619252590, now seen corresponding path program 47 times [2024-02-20 11:56:02,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:02,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636442090] [2024-02-20 11:56:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:02,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:02,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:02,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636442090] [2024-02-20 11:56:02,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636442090] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:02,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872731792] [2024-02-20 11:56:02,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:56:02,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:02,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:02,430 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:56:02,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-02-20 11:56:02,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 11:56:02,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:02,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:56:02,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:02,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:02,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872731792] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:02,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:02,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-02-20 11:56:02,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632891087] [2024-02-20 11:56:02,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:02,612 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 11:56:02,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:02,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 11:56:02,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:56:02,613 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:56:02,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 2366 transitions, 288657 flow. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:02,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:02,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:56:02,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:12,001 INFO L124 PetriNetUnfolderBase]: 2373/4286 cut-off events. [2024-02-20 11:56:12,001 INFO L125 PetriNetUnfolderBase]: For 23670/23670 co-relation queries the response was YES. [2024-02-20 11:56:12,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264079 conditions, 4286 events. 2373/4286 cut-off events. For 23670/23670 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 29272 event pairs, 0 based on Foata normal form. 0/3354 useless extension candidates. Maximal degree in co-relation 256645. Up to 4156 conditions per place. [2024-02-20 11:56:12,120 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1607 selfloop transitions, 439 changer transitions 491/2538 dead transitions. [2024-02-20 11:56:12,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 2538 transitions, 314775 flow [2024-02-20 11:56:12,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-20 11:56:12,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-20 11:56:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 120 transitions. [2024-02-20 11:56:12,121 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48582995951417 [2024-02-20 11:56:12,122 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 606 predicate places. [2024-02-20 11:56:12,122 INFO L507 AbstractCegarLoop]: Abstraction has has 627 places, 2538 transitions, 314775 flow [2024-02-20 11:56:12,122 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:56:12,122 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:12,122 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:56:12,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:12,333 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:12,333 INFO L432 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:12,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:12,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1641196587, now seen corresponding path program 48 times [2024-02-20 11:56:12,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:12,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976727079] [2024-02-20 11:56:12,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:12,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:12,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:12,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976727079] [2024-02-20 11:56:12,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976727079] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:12,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245123461] [2024-02-20 11:56:12,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:56:12,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:12,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:12,457 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:56:12,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-02-20 11:56:12,558 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 11:56:12,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:12,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:56:12,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:12,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:12,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245123461] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:12,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:12,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-02-20 11:56:12,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295331760] [2024-02-20 11:56:12,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:12,649 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 11:56:12,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:12,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 11:56:12,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:56:12,651 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:56:12,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 2538 transitions, 314775 flow. Second operand has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 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) [2024-02-20 11:56:12,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:12,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:56:12,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:23,862 INFO L124 PetriNetUnfolderBase]: 2420/4367 cut-off events. [2024-02-20 11:56:23,862 INFO L125 PetriNetUnfolderBase]: For 22904/22904 co-relation queries the response was YES. [2024-02-20 11:56:23,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273461 conditions, 4367 events. 2420/4367 cut-off events. For 22904/22904 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 30007 event pairs, 0 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 265908. Up to 4237 conditions per place. [2024-02-20 11:56:23,984 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1744 selfloop transitions, 308 changer transitions 526/2579 dead transitions. [2024-02-20 11:56:23,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 2579 transitions, 325039 flow [2024-02-20 11:56:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 11:56:23,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 11:56:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 158 transitions. [2024-02-20 11:56:23,990 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4376731301939058 [2024-02-20 11:56:23,990 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 624 predicate places. [2024-02-20 11:56:23,990 INFO L507 AbstractCegarLoop]: Abstraction has has 645 places, 2579 transitions, 325039 flow [2024-02-20 11:56:23,990 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 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) [2024-02-20 11:56:23,990 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:23,990 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:56:24,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:24,200 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-02-20 11:56:24,201 INFO L432 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:24,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash 294757304, now seen corresponding path program 49 times [2024-02-20 11:56:24,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:24,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607630764] [2024-02-20 11:56:24,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:24,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:24,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:24,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607630764] [2024-02-20 11:56:24,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607630764] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:24,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282056001] [2024-02-20 11:56:24,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:56:24,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:24,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:24,289 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:56:24,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-02-20 11:56:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:24,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:56:24,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:24,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:24,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282056001] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:24,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:24,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-02-20 11:56:24,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051299943] [2024-02-20 11:56:24,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:24,487 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 11:56:24,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 11:56:24,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:56:24,489 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:56:24,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 2579 transitions, 325039 flow. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 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) [2024-02-20 11:56:24,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:24,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:56:24,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:36,109 INFO L124 PetriNetUnfolderBase]: 2526/4549 cut-off events. [2024-02-20 11:56:36,110 INFO L125 PetriNetUnfolderBase]: For 22916/22916 co-relation queries the response was YES. [2024-02-20 11:56:36,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289473 conditions, 4549 events. 2526/4549 cut-off events. For 22916/22916 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 31277 event pairs, 0 based on Foata normal form. 0/3569 useless extension candidates. Maximal degree in co-relation 281801. Up to 4419 conditions per place. [2024-02-20 11:56:36,260 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1763 selfloop transitions, 393 changer transitions 526/2683 dead transitions. [2024-02-20 11:56:36,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 2683 transitions, 343543 flow [2024-02-20 11:56:36,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 11:56:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 11:56:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 154 transitions. [2024-02-20 11:56:36,262 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4265927977839335 [2024-02-20 11:56:36,262 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 642 predicate places. [2024-02-20 11:56:36,262 INFO L507 AbstractCegarLoop]: Abstraction has has 663 places, 2683 transitions, 343543 flow [2024-02-20 11:56:36,263 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 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) [2024-02-20 11:56:36,263 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:36,263 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:56:36,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:36,477 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:36,477 INFO L432 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:36,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:36,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1813554035, now seen corresponding path program 50 times [2024-02-20 11:56:36,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:36,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978786804] [2024-02-20 11:56:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:36,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:36,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978786804] [2024-02-20 11:56:36,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978786804] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640972290] [2024-02-20 11:56:36,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:56:36,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:36,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:36,558 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:56:36,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-02-20 11:56:36,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:56:36,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:36,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:56:36,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:36,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:36,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640972290] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:36,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:36,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-02-20 11:56:36,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719474402] [2024-02-20 11:56:36,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:36,748 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:56:36,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:36,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:56:36,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:56:36,749 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:56:36,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 2683 transitions, 343543 flow. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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) [2024-02-20 11:56:36,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:36,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:56:36,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:49,521 INFO L124 PetriNetUnfolderBase]: 2660/4727 cut-off events. [2024-02-20 11:56:49,521 INFO L125 PetriNetUnfolderBase]: For 22924/22924 co-relation queries the response was YES. [2024-02-20 11:56:49,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305573 conditions, 4727 events. 2660/4727 cut-off events. For 22924/22924 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 32223 event pairs, 0 based on Foata normal form. 0/3683 useless extension candidates. Maximal degree in co-relation 297782. Up to 4597 conditions per place. [2024-02-20 11:56:49,826 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1772 selfloop transitions, 486 changer transitions 528/2787 dead transitions. [2024-02-20 11:56:49,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 2787 transitions, 362415 flow [2024-02-20 11:56:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-20 11:56:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-20 11:56:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 213 transitions. [2024-02-20 11:56:49,828 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40037593984962405 [2024-02-20 11:56:49,829 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 669 predicate places. [2024-02-20 11:56:49,830 INFO L507 AbstractCegarLoop]: Abstraction has has 690 places, 2787 transitions, 362415 flow [2024-02-20 11:56:49,830 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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) [2024-02-20 11:56:49,830 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:49,830 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:56:49,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:50,042 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-02-20 11:56:50,042 INFO L432 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:56:50,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:50,043 INFO L85 PathProgramCache]: Analyzing trace with hash -294783211, now seen corresponding path program 51 times [2024-02-20 11:56:50,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:50,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252922733] [2024-02-20 11:56:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:50,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:50,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:50,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252922733] [2024-02-20 11:56:50,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252922733] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:50,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589062107] [2024-02-20 11:56:50,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:56:50,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:50,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:50,152 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:56:50,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-02-20 11:56:50,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 11:56:50,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:50,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:56:50,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:50,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:50,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589062107] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:50,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:50,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-02-20 11:56:50,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21139832] [2024-02-20 11:56:50,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:50,338 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:56:50,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:50,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:56:50,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:56:50,353 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:56:50,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 2787 transitions, 362415 flow. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 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) [2024-02-20 11:56:50,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:50,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:56:50,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:03,701 INFO L124 PetriNetUnfolderBase]: 2638/4691 cut-off events. [2024-02-20 11:57:03,702 INFO L125 PetriNetUnfolderBase]: For 23690/23690 co-relation queries the response was YES. [2024-02-20 11:57:03,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308035 conditions, 4691 events. 2638/4691 cut-off events. For 23690/23690 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 31987 event pairs, 0 based on Foata normal form. 0/3671 useless extension candidates. Maximal degree in co-relation 300393. Up to 4563 conditions per place. [2024-02-20 11:57:03,837 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1762 selfloop transitions, 452 changer transitions 556/2771 dead transitions. [2024-02-20 11:57:03,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 2771 transitions, 365863 flow [2024-02-20 11:57:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 11:57:03,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 11:57:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 160 transitions. [2024-02-20 11:57:03,844 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44321329639889195 [2024-02-20 11:57:03,845 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 687 predicate places. [2024-02-20 11:57:03,845 INFO L507 AbstractCegarLoop]: Abstraction has has 708 places, 2771 transitions, 365863 flow [2024-02-20 11:57:03,845 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 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) [2024-02-20 11:57:03,845 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:03,845 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:57:03,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-02-20 11:57:04,057 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:04,057 INFO L432 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:57:04,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:04,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1704263662, now seen corresponding path program 52 times [2024-02-20 11:57:04,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:04,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589991338] [2024-02-20 11:57:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:04,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:04,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:04,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589991338] [2024-02-20 11:57:04,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589991338] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:57:04,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310473300] [2024-02-20 11:57:04,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:57:04,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:04,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:57:04,136 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:57:04,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-02-20 11:57:04,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:57:04,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:57:04,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:57:04,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:57:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:04,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:57:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:04,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310473300] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:57:04,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:57:04,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-02-20 11:57:04,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956869934] [2024-02-20 11:57:04,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:57:04,316 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:57:04,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:04,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:57:04,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:57:04,318 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:57:04,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 2771 transitions, 365863 flow. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 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) [2024-02-20 11:57:04,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:04,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:57:04,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:18,367 INFO L124 PetriNetUnfolderBase]: 2822/4943 cut-off events. [2024-02-20 11:57:18,367 INFO L125 PetriNetUnfolderBase]: For 23684/23684 co-relation queries the response was YES. [2024-02-20 11:57:18,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329597 conditions, 4943 events. 2822/4943 cut-off events. For 23684/23684 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 33417 event pairs, 0 based on Foata normal form. 0/3829 useless extension candidates. Maximal degree in co-relation 321840. Up to 4815 conditions per place. [2024-02-20 11:57:18,504 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1786 selfloop transitions, 562 changer transitions 565/2914 dead transitions. [2024-02-20 11:57:18,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 728 places, 2914 transitions, 390565 flow [2024-02-20 11:57:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-20 11:57:18,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-20 11:57:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 166 transitions. [2024-02-20 11:57:18,505 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41604010025062654 [2024-02-20 11:57:18,505 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 707 predicate places. [2024-02-20 11:57:18,505 INFO L507 AbstractCegarLoop]: Abstraction has has 728 places, 2914 transitions, 390565 flow [2024-02-20 11:57:18,505 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 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) [2024-02-20 11:57:18,505 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:18,505 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:57:18,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-02-20 11:57:18,708 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:18,708 INFO L432 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:57:18,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:18,709 INFO L85 PathProgramCache]: Analyzing trace with hash 832612882, now seen corresponding path program 53 times [2024-02-20 11:57:18,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:18,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123094298] [2024-02-20 11:57:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:18,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:18,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123094298] [2024-02-20 11:57:18,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123094298] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:57:18,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002878548] [2024-02-20 11:57:18,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:57:18,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:18,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:57:18,793 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:57:18,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-02-20 11:57:18,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 11:57:18,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:57:18,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:57:18,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:57:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:18,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:57:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:19,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002878548] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:57:19,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:57:19,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-02-20 11:57:19,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833955798] [2024-02-20 11:57:19,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:57:19,006 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:57:19,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:19,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:57:19,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:57:19,012 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:57:19,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 2914 transitions, 390565 flow. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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) [2024-02-20 11:57:19,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:19,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:57:19,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:34,698 INFO L124 PetriNetUnfolderBase]: 2935/5146 cut-off events. [2024-02-20 11:57:34,698 INFO L125 PetriNetUnfolderBase]: For 23710/23710 co-relation queries the response was YES. [2024-02-20 11:57:34,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348347 conditions, 5146 events. 2935/5146 cut-off events. For 23710/23710 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 35072 event pairs, 0 based on Foata normal form. 0/4008 useless extension candidates. Maximal degree in co-relation 340475. Up to 5018 conditions per place. [2024-02-20 11:57:34,843 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1928 selfloop transitions, 536 changer transitions 565/3030 dead transitions. [2024-02-20 11:57:34,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 3030 transitions, 412215 flow [2024-02-20 11:57:34,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-20 11:57:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-20 11:57:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 170 transitions. [2024-02-20 11:57:34,844 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42606516290726815 [2024-02-20 11:57:34,845 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 727 predicate places. [2024-02-20 11:57:34,845 INFO L507 AbstractCegarLoop]: Abstraction has has 748 places, 3030 transitions, 412215 flow [2024-02-20 11:57:34,845 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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) [2024-02-20 11:57:34,845 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:34,845 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:57:34,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-02-20 11:57:35,050 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:35,050 INFO L432 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:57:35,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:35,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1005318651, now seen corresponding path program 54 times [2024-02-20 11:57:35,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:35,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77777777] [2024-02-20 11:57:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:35,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:35,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77777777] [2024-02-20 11:57:35,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77777777] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:57:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152105388] [2024-02-20 11:57:35,113 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:57:35,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:35,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:57:35,114 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:57:35,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-02-20 11:57:35,235 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:57:35,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:57:35,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:57:35,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:57:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:35,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:57:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:35,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152105388] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:57:35,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:57:35,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-02-20 11:57:35,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354277283] [2024-02-20 11:57:35,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:57:35,320 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:57:35,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:35,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:57:35,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:57:35,321 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:57:35,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 748 places, 3030 transitions, 412215 flow. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 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) [2024-02-20 11:57:35,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:35,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:57:35,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:52,917 INFO L124 PetriNetUnfolderBase]: 3043/5303 cut-off events. [2024-02-20 11:57:52,917 INFO L125 PetriNetUnfolderBase]: For 23709/23709 co-relation queries the response was YES. [2024-02-20 11:57:52,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364386 conditions, 5303 events. 3043/5303 cut-off events. For 23709/23709 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 36055 event pairs, 0 based on Foata normal form. 0/4121 useless extension candidates. Maximal degree in co-relation 356539. Up to 5176 conditions per place. [2024-02-20 11:57:53,069 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 2066 selfloop transitions, 431 changer transitions 620/3118 dead transitions. [2024-02-20 11:57:53,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 3118 transitions, 430432 flow [2024-02-20 11:57:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-02-20 11:57:53,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-02-20 11:57:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 154 transitions. [2024-02-20 11:57:53,082 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2024-02-20 11:57:53,083 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 744 predicate places. [2024-02-20 11:57:53,083 INFO L507 AbstractCegarLoop]: Abstraction has has 765 places, 3118 transitions, 430432 flow [2024-02-20 11:57:53,083 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 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) [2024-02-20 11:57:53,083 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:53,083 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:57:53,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-02-20 11:57:53,294 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:53,294 INFO L432 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:57:53,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:53,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1547280354, now seen corresponding path program 55 times [2024-02-20 11:57:53,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:53,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624397937] [2024-02-20 11:57:53,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:53,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:53,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:53,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624397937] [2024-02-20 11:57:53,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624397937] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:57:53,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801862924] [2024-02-20 11:57:53,363 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:57:53,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:53,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:57:53,364 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:57:53,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-02-20 11:57:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:53,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:57:53,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:57:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:53,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:57:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:53,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801862924] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:57:53,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:57:53,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-02-20 11:57:53,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686700772] [2024-02-20 11:57:53,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:57:53,607 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:57:53,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:53,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:57:53,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:57:53,610 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:57:53,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 765 places, 3118 transitions, 430432 flow. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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) [2024-02-20 11:57:53,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:53,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:57:53,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:58:12,674 INFO L124 PetriNetUnfolderBase]: 3068/5378 cut-off events. [2024-02-20 11:58:12,675 INFO L125 PetriNetUnfolderBase]: For 23729/23729 co-relation queries the response was YES. [2024-02-20 11:58:12,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374939 conditions, 5378 events. 3068/5378 cut-off events. For 23729/23729 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 36930 event pairs, 0 based on Foata normal form. 0/4212 useless extension candidates. Maximal degree in co-relation 366979. Up to 5251 conditions per place. [2024-02-20 11:58:12,839 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 1851 selfloop transitions, 690 changer transitions 620/3162 dead transitions. [2024-02-20 11:58:12,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 3162 transitions, 442862 flow [2024-02-20 11:58:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-20 11:58:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-20 11:58:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 196 transitions. [2024-02-20 11:58:12,840 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-02-20 11:58:12,841 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 767 predicate places. [2024-02-20 11:58:12,841 INFO L507 AbstractCegarLoop]: Abstraction has has 788 places, 3162 transitions, 442862 flow [2024-02-20 11:58:12,841 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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) [2024-02-20 11:58:12,841 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:12,841 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:58:12,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-02-20 11:58:13,052 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-02-20 11:58:13,052 INFO L432 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:58:13,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:13,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1933267260, now seen corresponding path program 56 times [2024-02-20 11:58:13,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:13,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925429793] [2024-02-20 11:58:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:13,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:13,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:58:13,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925429793] [2024-02-20 11:58:13,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925429793] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:58:13,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694681454] [2024-02-20 11:58:13,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:58:13,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:58:13,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:58:13,128 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:58:13,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-02-20 11:58:13,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:58:13,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:58:13,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:58:13,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:58:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:13,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:58:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:13,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694681454] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:58:13,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:58:13,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2024-02-20 11:58:13,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023715237] [2024-02-20 11:58:13,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:58:13,355 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:58:13,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:58:13,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:58:13,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:58:13,357 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:58:13,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 788 places, 3162 transitions, 442862 flow. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 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) [2024-02-20 11:58:13,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:58:13,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:58:13,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:58:35,313 INFO L124 PetriNetUnfolderBase]: 3317/5809 cut-off events. [2024-02-20 11:58:35,318 INFO L125 PetriNetUnfolderBase]: For 22986/22986 co-relation queries the response was YES. [2024-02-20 11:58:35,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411075 conditions, 5809 events. 3317/5809 cut-off events. For 22986/22986 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 40478 event pairs, 0 based on Foata normal form. 0/4593 useless extension candidates. Maximal degree in co-relation 403290. Up to 5684 conditions per place. [2024-02-20 11:58:35,606 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 2059 selfloop transitions, 725 changer transitions 624/3409 dead transitions. [2024-02-20 11:58:35,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 813 places, 3409 transitions, 484345 flow [2024-02-20 11:58:35,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-02-20 11:58:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-02-20 11:58:35,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 202 transitions. [2024-02-20 11:58:35,607 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4089068825910931 [2024-02-20 11:58:35,608 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 792 predicate places. [2024-02-20 11:58:35,608 INFO L507 AbstractCegarLoop]: Abstraction has has 813 places, 3409 transitions, 484345 flow [2024-02-20 11:58:35,608 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 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) [2024-02-20 11:58:35,608 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:35,608 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:58:35,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-02-20 11:58:35,820 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-02-20 11:58:35,820 INFO L432 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:58:35,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:35,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1742684724, now seen corresponding path program 57 times [2024-02-20 11:58:35,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:35,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211281021] [2024-02-20 11:58:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:35,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:35,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:35,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:58:35,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211281021] [2024-02-20 11:58:35,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211281021] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:58:35,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881580263] [2024-02-20 11:58:35,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:58:35,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:58:35,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:58:35,890 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:58:35,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-02-20 11:58:35,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 11:58:35,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:58:35,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:58:35,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:58:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:36,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:58:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:36,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881580263] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:58:36,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:58:36,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-02-20 11:58:36,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274490505] [2024-02-20 11:58:36,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:58:36,086 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 11:58:36,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:58:36,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 11:58:36,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:58:36,088 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:58:36,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 3409 transitions, 484345 flow. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 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) [2024-02-20 11:58:36,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:58:36,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:58:36,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:00,881 INFO L124 PetriNetUnfolderBase]: 3549/6141 cut-off events. [2024-02-20 11:59:00,881 INFO L125 PetriNetUnfolderBase]: For 23778/23778 co-relation queries the response was YES. [2024-02-20 11:59:00,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440778 conditions, 6141 events. 3549/6141 cut-off events. For 23778/23778 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 42598 event pairs, 0 based on Foata normal form. 0/4817 useless extension candidates. Maximal degree in co-relation 432884. Up to 6016 conditions per place. [2024-02-20 11:59:01,079 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 2124 selfloop transitions, 826 changer transitions 649/3600 dead transitions. [2024-02-20 11:59:01,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 835 places, 3600 transitions, 518665 flow [2024-02-20 11:59:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-02-20 11:59:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-02-20 11:59:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 173 transitions. [2024-02-20 11:59:01,082 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39588100686498856 [2024-02-20 11:59:01,082 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 814 predicate places. [2024-02-20 11:59:01,082 INFO L507 AbstractCegarLoop]: Abstraction has has 835 places, 3600 transitions, 518665 flow [2024-02-20 11:59:01,082 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 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) [2024-02-20 11:59:01,082 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:01,082 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:01,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:01,292 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:01,293 INFO L432 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:01,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:01,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1457333580, now seen corresponding path program 58 times [2024-02-20 11:59:01,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:01,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408298404] [2024-02-20 11:59:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:01,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:01,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:01,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408298404] [2024-02-20 11:59:01,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408298404] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:01,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746057448] [2024-02-20 11:59:01,397 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:59:01,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:01,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:01,399 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:01,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-02-20 11:59:01,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:59:01,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:01,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:59:01,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:01,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:01,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746057448] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:01,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:01,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2024-02-20 11:59:01,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525733485] [2024-02-20 11:59:01,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:01,599 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:59:01,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:01,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:59:01,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:59:01,602 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:01,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 835 places, 3600 transitions, 518665 flow. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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) [2024-02-20 11:59:01,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:01,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:01,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:31,216 INFO L124 PetriNetUnfolderBase]: 3632/6320 cut-off events. [2024-02-20 11:59:31,217 INFO L125 PetriNetUnfolderBase]: For 23023/23023 co-relation queries the response was YES. [2024-02-20 11:59:31,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459997 conditions, 6320 events. 3632/6320 cut-off events. For 23023/23023 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 44391 event pairs, 0 based on Foata normal form. 0/5002 useless extension candidates. Maximal degree in co-relation 451994. Up to 6195 conditions per place. [2024-02-20 11:59:31,464 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 2108 selfloop transitions, 945 changer transitions 649/3703 dead transitions. [2024-02-20 11:59:31,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 859 places, 3703 transitions, 540964 flow [2024-02-20 11:59:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-02-20 11:59:31,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-02-20 11:59:31,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 199 transitions. [2024-02-20 11:59:31,466 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4189473684210526 [2024-02-20 11:59:31,466 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 838 predicate places. [2024-02-20 11:59:31,466 INFO L507 AbstractCegarLoop]: Abstraction has has 859 places, 3703 transitions, 540964 flow [2024-02-20 11:59:31,466 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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) [2024-02-20 11:59:31,466 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:31,467 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:59:31,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:31,667 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:31,667 INFO L432 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:59:31,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:31,668 INFO L85 PathProgramCache]: Analyzing trace with hash -774074052, now seen corresponding path program 59 times [2024-02-20 11:59:31,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:31,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541692387] [2024-02-20 11:59:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:31,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:31,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:31,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541692387] [2024-02-20 11:59:31,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541692387] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:59:31,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143611710] [2024-02-20 11:59:31,766 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:59:31,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:31,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:59:31,767 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:59:31,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-02-20 11:59:31,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 11:59:31,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:59:31,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:59:31,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:59:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:31,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:59:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:32,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143611710] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:59:32,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:59:32,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-02-20 11:59:32,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535721053] [2024-02-20 11:59:32,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:59:32,018 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 11:59:32,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:32,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 11:59:32,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-02-20 11:59:32,022 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 11:59:32,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 859 places, 3703 transitions, 540964 flow. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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) [2024-02-20 11:59:32,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:32,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 11:59:32,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:00:04,456 INFO L124 PetriNetUnfolderBase]: 3847/6719 cut-off events. [2024-02-20 12:00:04,456 INFO L125 PetriNetUnfolderBase]: For 23854/23854 co-relation queries the response was YES. [2024-02-20 12:00:04,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495868 conditions, 6719 events. 3847/6719 cut-off events. For 23854/23854 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 47853 event pairs, 0 based on Foata normal form. 0/5357 useless extension candidates. Maximal degree in co-relation 487756. Up to 6594 conditions per place. [2024-02-20 12:00:04,872 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 2663 selfloop transitions, 618 changer transitions 649/3931 dead transitions. [2024-02-20 12:00:04,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 3931 transitions, 582217 flow [2024-02-20 12:00:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-02-20 12:00:04,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-02-20 12:00:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 219 transitions. [2024-02-20 12:00:04,874 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.397459165154265 [2024-02-20 12:00:04,874 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 866 predicate places. [2024-02-20 12:00:04,874 INFO L507 AbstractCegarLoop]: Abstraction has has 887 places, 3931 transitions, 582217 flow [2024-02-20 12:00:04,874 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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) [2024-02-20 12:00:04,874 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:00:04,875 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:00:04,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-02-20 12:00:05,090 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:05,091 INFO L432 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:00:05,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:00:05,091 INFO L85 PathProgramCache]: Analyzing trace with hash -982017390, now seen corresponding path program 60 times [2024-02-20 12:00:05,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:00:05,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231248350] [2024-02-20 12:00:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:00:05,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:00:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:00:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:05,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:00:05,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231248350] [2024-02-20 12:00:05,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231248350] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:00:05,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154585472] [2024-02-20 12:00:05,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:00:05,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:05,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:00:05,193 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:00:05,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-02-20 12:00:05,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-02-20 12:00:05,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:00:05,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:00:05,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:00:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:05,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:00:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:05,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154585472] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:00:05,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:00:05,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2024-02-20 12:00:05,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888612480] [2024-02-20 12:00:05,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:00:05,482 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 12:00:05,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:00:05,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 12:00:05,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-02-20 12:00:05,488 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:00:05,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 887 places, 3931 transitions, 582217 flow. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 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) [2024-02-20 12:00:05,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:00:05,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:00:05,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:00:53,690 INFO L124 PetriNetUnfolderBase]: 4527/7815 cut-off events. [2024-02-20 12:00:53,691 INFO L125 PetriNetUnfolderBase]: For 23146/23146 co-relation queries the response was YES. [2024-02-20 12:00:53,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584835 conditions, 7815 events. 4527/7815 cut-off events. For 23146/23146 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 56146 event pairs, 0 based on Foata normal form. 0/6223 useless extension candidates. Maximal degree in co-relation 576614. Up to 7690 conditions per place. [2024-02-20 12:00:54,033 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 2586 selfloop transitions, 1313 changer transitions 654/4554 dead transitions. [2024-02-20 12:00:54,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 913 places, 4554 transitions, 683701 flow [2024-02-20 12:00:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-20 12:00:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-20 12:00:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 210 transitions. [2024-02-20 12:00:54,035 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4093567251461988 [2024-02-20 12:00:54,037 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 892 predicate places. [2024-02-20 12:00:54,037 INFO L507 AbstractCegarLoop]: Abstraction has has 913 places, 4554 transitions, 683701 flow [2024-02-20 12:00:54,038 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 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) [2024-02-20 12:00:54,038 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:00:54,038 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:00:54,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-02-20 12:00:54,253 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:54,253 INFO L432 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:00:54,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:00:54,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1997979626, now seen corresponding path program 61 times [2024-02-20 12:00:54,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:00:54,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649754708] [2024-02-20 12:00:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:00:54,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:00:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:00:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:00:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649754708] [2024-02-20 12:00:54,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649754708] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:00:54,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816236969] [2024-02-20 12:00:54,335 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:00:54,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:54,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:00:54,337 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:00:54,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-02-20 12:00:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:00:54,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:00:54,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:00:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:54,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:00:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:00:54,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816236969] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:00:54,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:00:54,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2024-02-20 12:00:54,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531991767] [2024-02-20 12:00:54,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:00:54,592 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 12:00:54,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:00:54,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 12:00:54,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:00:54,596 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:00:54,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 913 places, 4554 transitions, 683701 flow. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 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) [2024-02-20 12:00:54,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:00:54,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:00:54,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:01:48,183 INFO L124 PetriNetUnfolderBase]: 4705/8077 cut-off events. [2024-02-20 12:01:48,183 INFO L125 PetriNetUnfolderBase]: For 23942/23942 co-relation queries the response was YES. [2024-02-20 12:01:48,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612552 conditions, 8077 events. 4705/8077 cut-off events. For 23942/23942 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 57946 event pairs, 0 based on Foata normal form. 0/6397 useless extension candidates. Maximal degree in co-relation 604222. Up to 7952 conditions per place. [2024-02-20 12:01:48,554 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 2795 selfloop transitions, 1230 changer transitions 680/4706 dead transitions. [2024-02-20 12:01:48,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 4706 transitions, 715911 flow [2024-02-20 12:01:48,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-20 12:01:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-20 12:01:48,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 181 transitions. [2024-02-20 12:01:48,555 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3969298245614035 [2024-02-20 12:01:48,560 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 915 predicate places. [2024-02-20 12:01:48,560 INFO L507 AbstractCegarLoop]: Abstraction has has 936 places, 4706 transitions, 715911 flow [2024-02-20 12:01:48,560 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 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) [2024-02-20 12:01:48,560 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:01:48,560 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:01:48,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-02-20 12:01:48,772 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2024-02-20 12:01:48,772 INFO L432 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:01:48,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:01:48,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1196559778, now seen corresponding path program 62 times [2024-02-20 12:01:48,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:01:48,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437871262] [2024-02-20 12:01:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:01:48,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:01:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:01:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:01:48,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:01:48,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437871262] [2024-02-20 12:01:48,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437871262] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:01:48,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035878422] [2024-02-20 12:01:48,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:01:48,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:01:48,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:01:48,844 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:01:48,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-02-20 12:01:48,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:01:48,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:01:48,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:01:48,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:01:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:01:49,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:01:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:01:49,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035878422] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:01:49,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:01:49,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-02-20 12:01:49,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875561951] [2024-02-20 12:01:49,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:01:49,108 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-20 12:01:49,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:01:49,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-20 12:01:49,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-02-20 12:01:49,111 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:01:49,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 936 places, 4706 transitions, 715911 flow. Second operand has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:01:49,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:01:49,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:01:49,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:02:58,928 INFO L124 PetriNetUnfolderBase]: 5365/9243 cut-off events. [2024-02-20 12:02:58,928 INFO L125 PetriNetUnfolderBase]: For 23283/23283 co-relation queries the response was YES. [2024-02-20 12:02:58,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710488 conditions, 9243 events. 5365/9243 cut-off events. For 23283/23283 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 67971 event pairs, 0 based on Foata normal form. 0/7401 useless extension candidates. Maximal degree in co-relation 702049. Up to 9118 conditions per place. [2024-02-20 12:02:59,282 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 3490 selfloop transitions, 1197 changer transitions 684/5372 dead transitions. [2024-02-20 12:02:59,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 971 places, 5372 transitions, 828146 flow [2024-02-20 12:02:59,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-02-20 12:02:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-02-20 12:02:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 271 transitions. [2024-02-20 12:02:59,297 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3961988304093567 [2024-02-20 12:02:59,297 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 950 predicate places. [2024-02-20 12:02:59,297 INFO L507 AbstractCegarLoop]: Abstraction has has 971 places, 5372 transitions, 828146 flow [2024-02-20 12:02:59,297 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:02:59,298 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:02:59,298 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:02:59,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-02-20 12:02:59,509 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:02:59,509 INFO L432 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:02:59,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:02:59,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1223902290, now seen corresponding path program 63 times [2024-02-20 12:02:59,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:02:59,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97771253] [2024-02-20 12:02:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:02:59,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:02:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:02:59,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:02:59,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:02:59,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97771253] [2024-02-20 12:02:59,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97771253] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:02:59,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965865866] [2024-02-20 12:02:59,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:02:59,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:02:59,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:02:59,578 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:02:59,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-02-20 12:02:59,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:02:59,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:02:59,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:02:59,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:02:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:02:59,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:02:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:02:59,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965865866] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:02:59,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:02:59,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-02-20 12:02:59,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633603053] [2024-02-20 12:02:59,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:02:59,811 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-20 12:02:59,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:02:59,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-20 12:02:59,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-02-20 12:02:59,815 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:02:59,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 971 places, 5372 transitions, 828146 flow. Second operand has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 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) [2024-02-20 12:02:59,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:02:59,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:02:59,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:04:15,706 INFO L124 PetriNetUnfolderBase]: 5502/9446 cut-off events. [2024-02-20 12:04:15,707 INFO L125 PetriNetUnfolderBase]: For 23283/23283 co-relation queries the response was YES. [2024-02-20 12:04:15,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735555 conditions, 9446 events. 5502/9446 cut-off events. For 23283/23283 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 69412 event pairs, 0 based on Foata normal form. 0/7536 useless extension candidates. Maximal degree in co-relation 727007. Up to 9321 conditions per place. [2024-02-20 12:04:16,484 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 3370 selfloop transitions, 1420 changer transitions 699/5490 dead transitions. [2024-02-20 12:04:16,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 998 places, 5490 transitions, 857296 flow [2024-02-20 12:04:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-20 12:04:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-20 12:04:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 201 transitions. [2024-02-20 12:04:16,504 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37781954887218044 [2024-02-20 12:04:16,504 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 977 predicate places. [2024-02-20 12:04:16,505 INFO L507 AbstractCegarLoop]: Abstraction has has 998 places, 5490 transitions, 857296 flow [2024-02-20 12:04:16,505 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 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) [2024-02-20 12:04:16,505 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:04:16,505 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:04:16,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-02-20 12:04:16,705 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-02-20 12:04:16,706 INFO L432 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:04:16,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:04:16,706 INFO L85 PathProgramCache]: Analyzing trace with hash -903030634, now seen corresponding path program 64 times [2024-02-20 12:04:16,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:04:16,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348710329] [2024-02-20 12:04:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:04:16,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:04:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:04:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:04:16,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:04:16,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348710329] [2024-02-20 12:04:16,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348710329] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:04:16,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317387988] [2024-02-20 12:04:16,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:04:16,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:04:16,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:04:16,773 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:04:16,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-02-20 12:04:16,902 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:04:16,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:04:16,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:04:16,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:04:16,962 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:04:16,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:04:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:04:17,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317387988] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:04:17,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:04:17,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-02-20 12:04:17,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105531412] [2024-02-20 12:04:17,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:04:17,000 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 12:04:17,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:04:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 12:04:17,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-02-20 12:04:17,003 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:04:17,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 998 places, 5490 transitions, 857296 flow. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 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) [2024-02-20 12:04:17,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:04:17,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:04:17,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:05:33,791 INFO L124 PetriNetUnfolderBase]: 5858/9956 cut-off events. [2024-02-20 12:05:33,791 INFO L125 PetriNetUnfolderBase]: For 24076/24076 co-relation queries the response was YES. [2024-02-20 12:05:33,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785292 conditions, 9956 events. 5858/9956 cut-off events. For 24076/24076 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 72747 event pairs, 0 based on Foata normal form. 0/7890 useless extension candidates. Maximal degree in co-relation 776635. Up to 9831 conditions per place. [2024-02-20 12:05:34,177 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 3154 selfloop transitions, 1923 changer transitions 700/5778 dead transitions. [2024-02-20 12:05:34,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1023 places, 5778 transitions, 913811 flow [2024-02-20 12:05:34,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-02-20 12:05:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-02-20 12:05:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 208 transitions. [2024-02-20 12:05:34,178 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-02-20 12:05:34,178 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 1002 predicate places. [2024-02-20 12:05:34,178 INFO L507 AbstractCegarLoop]: Abstraction has has 1023 places, 5778 transitions, 913811 flow [2024-02-20 12:05:34,179 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 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) [2024-02-20 12:05:34,179 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:05:34,179 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:05:34,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-02-20 12:05:34,390 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-02-20 12:05:34,391 INFO L432 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:05:34,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:05:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash 586532791, now seen corresponding path program 65 times [2024-02-20 12:05:34,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:05:34,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224186966] [2024-02-20 12:05:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:05:34,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:05:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:05:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:05:34,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:05:34,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224186966] [2024-02-20 12:05:34,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224186966] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:05:34,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897460237] [2024-02-20 12:05:34,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:05:34,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:05:34,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:05:34,454 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:05:34,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-02-20 12:05:34,579 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:05:34,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:05:34,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:05:34,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:05:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:05:34,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:05:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:05:34,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897460237] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:05:34,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:05:34,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-02-20 12:05:34,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674327752] [2024-02-20 12:05:34,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:05:34,654 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 12:05:34,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:05:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 12:05:34,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-02-20 12:05:34,656 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:05:34,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1023 places, 5778 transitions, 913811 flow. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:05:34,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:05:34,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:05:34,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:07:11,158 INFO L124 PetriNetUnfolderBase]: 6133/10422 cut-off events. [2024-02-20 12:07:11,158 INFO L125 PetriNetUnfolderBase]: For 23315/23315 co-relation queries the response was YES. [2024-02-20 12:07:11,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832296 conditions, 10422 events. 6133/10422 cut-off events. For 23315/23315 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 76776 event pairs, 0 based on Foata normal form. 0/8252 useless extension candidates. Maximal degree in co-relation 823044. Up to 10294 conditions per place. [2024-02-20 12:07:11,767 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 4378 selfloop transitions, 972 changer transitions 705/6056 dead transitions. [2024-02-20 12:07:11,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1035 places, 6056 transitions, 969798 flow [2024-02-20 12:07:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-20 12:07:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-20 12:07:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 112 transitions. [2024-02-20 12:07:11,768 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4534412955465587 [2024-02-20 12:07:11,769 INFO L308 CegarLoopForPetriNet]: 21 programPoint places, 1014 predicate places. [2024-02-20 12:07:11,769 INFO L507 AbstractCegarLoop]: Abstraction has has 1035 places, 6056 transitions, 969798 flow [2024-02-20 12:07:11,769 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:07:11,769 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:07:11,769 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:07:11,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-02-20 12:07:11,978 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-02-20 12:07:11,978 INFO L432 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:07:11,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:07:11,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1490617527, now seen corresponding path program 66 times [2024-02-20 12:07:11,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:07:11,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212726999] [2024-02-20 12:07:11,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:07:11,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:07:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:07:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:07:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:07:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212726999] [2024-02-20 12:07:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212726999] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:07:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575937777] [2024-02-20 12:07:12,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:07:12,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:07:12,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:07:12,067 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:07:12,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-02-20 12:07:12,214 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 12:07:12,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:07:12,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:07:12,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:07:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:07:12,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:07:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:07:12,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575937777] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:07:12,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:07:12,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-02-20 12:07:12,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391376589] [2024-02-20 12:07:12,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:07:12,322 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 12:07:12,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:07:12,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 12:07:12,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-02-20 12:07:12,324 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-02-20 12:07:12,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1035 places, 6056 transitions, 969798 flow. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 16 states have internal predecessors, (77), 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) [2024-02-20 12:07:12,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:07:12,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-02-20 12:07:12,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15