./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i -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 8943650a21e052edc6a6af145da55799620df509a78c8e503eca6167eaa2f8fc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:11:44,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:11:44,190 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:11:44,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:11:44,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:11:44,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:11:44,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:11:44,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:11:44,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:11:44,232 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:11:44,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:11:44,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:11:44,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:11:44,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:11:44,233 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:11:44,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:11:44,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:11:44,238 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:11:44,238 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:11:44,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:11:44,240 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:11:44,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:11:44,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:11:44,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:11:44,241 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:11:44,241 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:11:44,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:11:44,241 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:11:44,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:11:44,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:11:44,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:11:44,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:11:44,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:11:44,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:11:44,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:11:44,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:11:44,244 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:11:44,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:11:44,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:11:44,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:11:44,245 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:11:44,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:11:44,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:11:44,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8943650a21e052edc6a6af145da55799620df509a78c8e503eca6167eaa2f8fc [2024-01-27 16:11:44,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:11:44,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:11:44,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:11:44,534 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:11:44,534 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:11:44,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:11:45,518 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:11:45,741 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:11:45,742 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:11:45,760 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ddcafd7/ea241b3e89034771a53ea90c7d82aa3c/FLAGe74a4f96e [2024-01-27 16:11:45,770 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ddcafd7/ea241b3e89034771a53ea90c7d82aa3c [2024-01-27 16:11:45,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:11:45,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:11:45,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:11:45,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:11:45,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:11:45,785 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:11:45" (1/1) ... [2024-01-27 16:11:45,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@352366ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:45, skipping insertion in model container [2024-01-27 16:11:45,786 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:11:45" (1/1) ... [2024-01-27 16:11:45,837 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:11:45,990 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-27 16:11:46,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:11:46,172 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:11:46,182 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-27 16:11:46,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:11:46,263 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:11:46,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46 WrapperNode [2024-01-27 16:11:46,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:11:46,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:11:46,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:11:46,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:11:46,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (1/1) ... [2024-01-27 16:11:46,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (1/1) ... [2024-01-27 16:11:46,301 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2024-01-27 16:11:46,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:11:46,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:11:46,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:11:46,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:11:46,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (1/1) ... [2024-01-27 16:11:46,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (1/1) ... [2024-01-27 16:11:46,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (1/1) ... [2024-01-27 16:11:46,335 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 16:11:46,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (1/1) ... [2024-01-27 16:11:46,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (1/1) ... [2024-01-27 16:11:46,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (1/1) ... [2024-01-27 16:11:46,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (1/1) ... [2024-01-27 16:11:46,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (1/1) ... [2024-01-27 16:11:46,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (1/1) ... [2024-01-27 16:11:46,351 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:11:46,352 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:11:46,352 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:11:46,352 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:11:46,353 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (1/1) ... [2024-01-27 16:11:46,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:11:46,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:11:46,395 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) [2024-01-27 16:11:46,411 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 [2024-01-27 16:11:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:11:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:11:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:11:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:11:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:11:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:11:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:11:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:11:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:11:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:11:46,494 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:11:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:11:46,495 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:11:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:11:46,495 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:11:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:11:46,495 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:11:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:11:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:11:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:11:46,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:11:46,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:11:46,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:11:46,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:11:46,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:11:46,500 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:11:46,625 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:11:46,627 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:11:46,883 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:11:46,883 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:11:47,025 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:11:47,026 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:11:47,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:11:47 BoogieIcfgContainer [2024-01-27 16:11:47,026 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:11:47,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:11:47,029 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:11:47,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:11:47,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:11:45" (1/3) ... [2024-01-27 16:11:47,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4427e6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:11:47, skipping insertion in model container [2024-01-27 16:11:47,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:46" (2/3) ... [2024-01-27 16:11:47,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4427e6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:11:47, skipping insertion in model container [2024-01-27 16:11:47,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:11:47" (3/3) ... [2024-01-27 16:11:47,035 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:11:47,041 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:11:47,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:11:47,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:11:47,048 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:11:47,092 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:11:47,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2024-01-27 16:11:47,152 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-01-27 16:11:47,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:11:47,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-01-27 16:11:47,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2024-01-27 16:11:47,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2024-01-27 16:11:47,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:11:47,173 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@49dd35f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:11:47,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:11:47,177 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:11:47,177 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-27 16:11:47,177 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:11:47,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:47,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 16:11:47,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:47,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash 12269972, now seen corresponding path program 1 times [2024-01-27 16:11:47,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:47,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341275889] [2024-01-27 16:11:47,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:47,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:47,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:47,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341275889] [2024-01-27 16:11:47,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341275889] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:47,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:47,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:11:47,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661069236] [2024-01-27 16:11:47,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:47,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:11:47,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:47,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:11:47,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:11:47,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-01-27 16:11:47,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2024-01-27 16:11:47,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:47,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-01-27 16:11:47,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:48,223 INFO L124 PetriNetUnfolderBase]: 2495/4136 cut-off events. [2024-01-27 16:11:48,224 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-27 16:11:48,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 4136 events. 2495/4136 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 28595 event pairs, 443 based on Foata normal form. 135/4200 useless extension candidates. Maximal degree in co-relation 7700. Up to 2779 conditions per place. [2024-01-27 16:11:48,249 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 37 selfloop transitions, 2 changer transitions 2/61 dead transitions. [2024-01-27 16:11:48,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2024-01-27 16:11:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:11:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:11:48,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-01-27 16:11:48,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-01-27 16:11:48,261 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 116 transitions. [2024-01-27 16:11:48,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2024-01-27 16:11:48,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:11:48,270 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2024-01-27 16:11:48,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-01-27 16:11:48,275 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-01-27 16:11:48,275 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2024-01-27 16:11:48,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2024-01-27 16:11:48,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:48,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:48,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:11:48,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:48,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1256845437, now seen corresponding path program 1 times [2024-01-27 16:11:48,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:48,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918073259] [2024-01-27 16:11:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:48,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:48,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:48,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918073259] [2024-01-27 16:11:48,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918073259] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:48,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:48,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:11:48,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881264571] [2024-01-27 16:11:48,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:48,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:11:48,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:48,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:11:48,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:11:48,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2024-01-27 16:11:48,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:48,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:48,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2024-01-27 16:11:48,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:49,398 INFO L124 PetriNetUnfolderBase]: 5132/7572 cut-off events. [2024-01-27 16:11:49,399 INFO L125 PetriNetUnfolderBase]: For 485/485 co-relation queries the response was YES. [2024-01-27 16:11:49,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15240 conditions, 7572 events. 5132/7572 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 49942 event pairs, 779 based on Foata normal form. 0/7338 useless extension candidates. Maximal degree in co-relation 15230. Up to 3865 conditions per place. [2024-01-27 16:11:49,472 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 33 selfloop transitions, 2 changer transitions 52/103 dead transitions. [2024-01-27 16:11:49,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 103 transitions, 404 flow [2024-01-27 16:11:49,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:11:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:11:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-01-27 16:11:49,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6352040816326531 [2024-01-27 16:11:49,479 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 8 states and 249 transitions. [2024-01-27 16:11:49,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 103 transitions, 404 flow [2024-01-27 16:11:49,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:11:49,483 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 106 flow [2024-01-27 16:11:49,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=106, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2024-01-27 16:11:49,484 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2024-01-27 16:11:49,486 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 106 flow [2024-01-27 16:11:49,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:49,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:49,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:49,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:11:49,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:49,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:49,488 INFO L85 PathProgramCache]: Analyzing trace with hash -351114745, now seen corresponding path program 1 times [2024-01-27 16:11:49,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:49,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411000337] [2024-01-27 16:11:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:49,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:49,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:49,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411000337] [2024-01-27 16:11:49,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411000337] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:49,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:49,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:11:49,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076563020] [2024-01-27 16:11:49,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:49,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:11:49,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:49,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:11:49,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:11:49,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:11:49,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:49,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:49,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:11:49,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:50,688 INFO L124 PetriNetUnfolderBase]: 6591/9975 cut-off events. [2024-01-27 16:11:50,689 INFO L125 PetriNetUnfolderBase]: For 1720/1720 co-relation queries the response was YES. [2024-01-27 16:11:50,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20906 conditions, 9975 events. 6591/9975 cut-off events. For 1720/1720 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 65679 event pairs, 2703 based on Foata normal form. 256/10209 useless extension candidates. Maximal degree in co-relation 20891. Up to 7021 conditions per place. [2024-01-27 16:11:50,735 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 38 selfloop transitions, 3 changer transitions 43/99 dead transitions. [2024-01-27 16:11:50,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 99 transitions, 404 flow [2024-01-27 16:11:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:11:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:11:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 219 transitions. [2024-01-27 16:11:50,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384839650145773 [2024-01-27 16:11:50,737 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 106 flow. Second operand 7 states and 219 transitions. [2024-01-27 16:11:50,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 99 transitions, 404 flow [2024-01-27 16:11:50,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 384 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-27 16:11:50,839 INFO L231 Difference]: Finished difference. Result has 62 places, 43 transitions, 129 flow [2024-01-27 16:11:50,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=129, PETRI_PLACES=62, PETRI_TRANSITIONS=43} [2024-01-27 16:11:50,840 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2024-01-27 16:11:50,840 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 43 transitions, 129 flow [2024-01-27 16:11:50,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:50,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:50,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:50,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:11:50,841 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:50,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:50,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1982563324, now seen corresponding path program 1 times [2024-01-27 16:11:50,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:50,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656657901] [2024-01-27 16:11:50,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:50,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:51,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656657901] [2024-01-27 16:11:51,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656657901] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:51,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:51,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:11:51,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206427412] [2024-01-27 16:11:51,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:51,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:11:51,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:51,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:11:51,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:11:51,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-01-27 16:11:51,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 43 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:51,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:51,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-01-27 16:11:51,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:54,157 INFO L124 PetriNetUnfolderBase]: 25585/36716 cut-off events. [2024-01-27 16:11:54,158 INFO L125 PetriNetUnfolderBase]: For 17837/17837 co-relation queries the response was YES. [2024-01-27 16:11:54,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87286 conditions, 36716 events. 25585/36716 cut-off events. For 17837/17837 co-relation queries the response was YES. Maximal size of possible extension queue 1489. Compared 253844 event pairs, 2135 based on Foata normal form. 838/37532 useless extension candidates. Maximal degree in co-relation 87270. Up to 16062 conditions per place. [2024-01-27 16:11:54,367 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 67 selfloop transitions, 12 changer transitions 83/173 dead transitions. [2024-01-27 16:11:54,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 173 transitions, 822 flow [2024-01-27 16:11:54,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:11:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:11:54,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2024-01-27 16:11:54,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346938775510204 [2024-01-27 16:11:54,369 INFO L175 Difference]: Start difference. First operand has 62 places, 43 transitions, 129 flow. Second operand 10 states and 311 transitions. [2024-01-27 16:11:54,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 173 transitions, 822 flow [2024-01-27 16:11:54,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 173 transitions, 802 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-27 16:11:54,858 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 259 flow [2024-01-27 16:11:54,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=259, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-01-27 16:11:54,859 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-01-27 16:11:54,859 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 259 flow [2024-01-27 16:11:54,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:54,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:54,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:54,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:11:54,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:54,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:54,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1944558799, now seen corresponding path program 1 times [2024-01-27 16:11:54,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:54,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994779198] [2024-01-27 16:11:54,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:54,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:54,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:54,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994779198] [2024-01-27 16:11:54,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994779198] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:54,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:54,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:11:54,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052793487] [2024-01-27 16:11:54,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:54,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:11:54,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:54,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:11:54,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:11:54,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:11:54,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:54,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:54,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:11:54,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:58,699 INFO L124 PetriNetUnfolderBase]: 25880/39976 cut-off events. [2024-01-27 16:11:58,699 INFO L125 PetriNetUnfolderBase]: For 75140/76268 co-relation queries the response was YES. [2024-01-27 16:11:58,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112074 conditions, 39976 events. 25880/39976 cut-off events. For 75140/76268 co-relation queries the response was YES. Maximal size of possible extension queue 1833. Compared 326384 event pairs, 9950 based on Foata normal form. 938/39552 useless extension candidates. Maximal degree in co-relation 112050. Up to 14903 conditions per place. [2024-01-27 16:11:58,939 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 47 selfloop transitions, 6 changer transitions 51/125 dead transitions. [2024-01-27 16:11:58,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 125 transitions, 747 flow [2024-01-27 16:11:58,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:11:58,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:11:58,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-01-27 16:11:58,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6588921282798834 [2024-01-27 16:11:58,941 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 259 flow. Second operand 7 states and 226 transitions. [2024-01-27 16:11:58,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 125 transitions, 747 flow [2024-01-27 16:11:59,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 125 transitions, 707 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-01-27 16:11:59,597 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 271 flow [2024-01-27 16:11:59,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2024-01-27 16:11:59,597 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2024-01-27 16:11:59,598 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 271 flow [2024-01-27 16:11:59,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:59,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:59,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:59,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:11:59,598 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:59,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:59,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1135113341, now seen corresponding path program 1 times [2024-01-27 16:11:59,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:59,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055894765] [2024-01-27 16:11:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:59,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:59,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:59,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055894765] [2024-01-27 16:11:59,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055894765] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:59,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:59,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:11:59,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700477459] [2024-01-27 16:11:59,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:59,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:11:59,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:11:59,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:11:59,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:11:59,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:59,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:59,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:11:59,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:05,544 INFO L124 PetriNetUnfolderBase]: 48857/73118 cut-off events. [2024-01-27 16:12:05,544 INFO L125 PetriNetUnfolderBase]: For 67653/70851 co-relation queries the response was YES. [2024-01-27 16:12:05,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177239 conditions, 73118 events. 48857/73118 cut-off events. For 67653/70851 co-relation queries the response was YES. Maximal size of possible extension queue 2785. Compared 575006 event pairs, 9267 based on Foata normal form. 3417/74447 useless extension candidates. Maximal degree in co-relation 177213. Up to 37576 conditions per place. [2024-01-27 16:12:06,007 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 56 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2024-01-27 16:12:06,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 88 transitions, 489 flow [2024-01-27 16:12:06,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:12:06,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:12:06,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-01-27 16:12:06,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6989795918367347 [2024-01-27 16:12:06,009 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 271 flow. Second operand 4 states and 137 transitions. [2024-01-27 16:12:06,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 88 transitions, 489 flow [2024-01-27 16:12:06,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 467 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-01-27 16:12:06,239 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 295 flow [2024-01-27 16:12:06,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-01-27 16:12:06,239 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2024-01-27 16:12:06,239 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 295 flow [2024-01-27 16:12:06,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:06,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:06,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:06,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:12:06,240 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:06,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:06,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1917523648, now seen corresponding path program 1 times [2024-01-27 16:12:06,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:06,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157712814] [2024-01-27 16:12:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:06,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:06,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:06,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157712814] [2024-01-27 16:12:06,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157712814] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:06,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:06,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:12:06,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416182716] [2024-01-27 16:12:06,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:06,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:12:06,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:06,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:12:06,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:12:06,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:12:06,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 295 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:06,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:06,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:12:06,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:14,008 INFO L124 PetriNetUnfolderBase]: 55308/85931 cut-off events. [2024-01-27 16:12:14,009 INFO L125 PetriNetUnfolderBase]: For 75231/79087 co-relation queries the response was YES. [2024-01-27 16:12:14,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221975 conditions, 85931 events. 55308/85931 cut-off events. For 75231/79087 co-relation queries the response was YES. Maximal size of possible extension queue 4267. Compared 774402 event pairs, 26243 based on Foata normal form. 1972/80417 useless extension candidates. Maximal degree in co-relation 221950. Up to 32234 conditions per place. [2024-01-27 16:12:14,558 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 83 selfloop transitions, 10 changer transitions 4/125 dead transitions. [2024-01-27 16:12:14,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 125 transitions, 711 flow [2024-01-27 16:12:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:12:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:12:14,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-01-27 16:12:14,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6501457725947521 [2024-01-27 16:12:14,560 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 295 flow. Second operand 7 states and 223 transitions. [2024-01-27 16:12:14,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 125 transitions, 711 flow [2024-01-27 16:12:14,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 125 transitions, 709 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:12:14,598 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 370 flow [2024-01-27 16:12:14,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=370, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2024-01-27 16:12:14,599 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2024-01-27 16:12:14,599 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 370 flow [2024-01-27 16:12:14,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:14,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:14,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:14,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:12:14,600 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:14,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:14,600 INFO L85 PathProgramCache]: Analyzing trace with hash 623981175, now seen corresponding path program 1 times [2024-01-27 16:12:14,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:14,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528648435] [2024-01-27 16:12:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:14,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:14,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:14,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528648435] [2024-01-27 16:12:14,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528648435] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:14,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:14,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:12:14,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499168046] [2024-01-27 16:12:14,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:14,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:12:14,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:14,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:12:14,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:12:14,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:12:14,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 370 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:14,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:14,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:12:14,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand