./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix027_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/mix027_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 d8f535cb798ce58a79ec2e9a728d4e5d884025e215c7cfd9880fc53267dd5a20 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:12:24,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:12:24,129 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:12:24,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:12:24,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:12:24,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:12:24,147 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:12:24,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:12:24,148 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:12:24,148 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:12:24,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:12:24,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:12:24,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:12:24,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:12:24,150 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:12:24,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:12:24,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:12:24,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:12:24,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:12:24,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:12:24,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:12:24,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:12:24,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:12:24,152 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:12:24,152 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:12:24,152 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:12:24,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:12:24,153 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:12:24,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:12:24,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:12:24,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:12:24,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:12:24,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:12:24,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:12:24,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:12:24,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:12:24,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:12:24,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:12:24,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:12:24,155 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:12:24,155 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:12:24,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:12:24,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:12:24,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8f535cb798ce58a79ec2e9a728d4e5d884025e215c7cfd9880fc53267dd5a20 [2024-01-27 16:12:24,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:12:24,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:12:24,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:12:24,387 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:12:24,387 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:12:24,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:12:25,549 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:12:25,755 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:12:25,755 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:12:25,782 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb3d8c9e/f2ac38312fba4676b6e1a0bd7f8dc292/FLAG45054ac23 [2024-01-27 16:12:25,793 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb3d8c9e/f2ac38312fba4676b6e1a0bd7f8dc292 [2024-01-27 16:12:25,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:12:25,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:12:25,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:12:25,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:12:25,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:12:25,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:12:25" (1/1) ... [2024-01-27 16:12:25,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348dd88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:25, skipping insertion in model container [2024-01-27 16:12:25,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:12:25" (1/1) ... [2024-01-27 16:12:25,855 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:12:26,004 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/mix027_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-27 16:12:26,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:12:26,259 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:12:26,269 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/mix027_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-27 16:12:26,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:12:26,358 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:12:26,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26 WrapperNode [2024-01-27 16:12:26,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:12:26,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:12:26,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:12:26,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:12:26,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (1/1) ... [2024-01-27 16:12:26,376 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (1/1) ... [2024-01-27 16:12:26,393 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2024-01-27 16:12:26,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:12:26,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:12:26,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:12:26,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:12:26,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (1/1) ... [2024-01-27 16:12:26,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (1/1) ... [2024-01-27 16:12:26,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (1/1) ... [2024-01-27 16:12:26,430 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 16:12:26,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (1/1) ... [2024-01-27 16:12:26,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (1/1) ... [2024-01-27 16:12:26,445 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (1/1) ... [2024-01-27 16:12:26,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (1/1) ... [2024-01-27 16:12:26,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (1/1) ... [2024-01-27 16:12:26,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (1/1) ... [2024-01-27 16:12:26,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:12:26,472 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:12:26,472 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:12:26,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:12:26,473 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (1/1) ... [2024-01-27 16:12:26,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:12:26,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:12:26,510 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 16:12:26,552 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 16:12:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:12:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:12:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:12:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:12:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:12:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:12:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:12:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:12:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:12:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:12:26,570 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:12:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:12:26,570 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:12:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:12:26,570 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:12:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:12:26,571 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:12:26,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:12:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:12:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:12:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:12:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:12:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:12:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:12:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:12:26,574 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 16:12:26,715 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:12:26,717 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:12:27,000 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:12:27,000 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:12:27,160 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:12:27,161 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:12:27,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:12:27 BoogieIcfgContainer [2024-01-27 16:12:27,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:12:27,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:12:27,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:12:27,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:12:27,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:12:25" (1/3) ... [2024-01-27 16:12:27,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775c5178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:12:27, skipping insertion in model container [2024-01-27 16:12:27,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:26" (2/3) ... [2024-01-27 16:12:27,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775c5178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:12:27, skipping insertion in model container [2024-01-27 16:12:27,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:12:27" (3/3) ... [2024-01-27 16:12:27,168 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:12:27,174 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:12:27,181 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:12:27,181 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:12:27,181 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:12:27,224 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:12:27,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2024-01-27 16:12:27,280 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-01-27 16:12:27,280 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:12:27,284 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 16:12:27,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2024-01-27 16:12:27,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2024-01-27 16:12:27,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:12:27,306 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;@3825fdea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:12:27,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:12:27,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:12:27,311 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-27 16:12:27,311 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:12:27,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:27,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 16:12:27,312 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 16:12:27,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:27,316 INFO L85 PathProgramCache]: Analyzing trace with hash 12269972, now seen corresponding path program 1 times [2024-01-27 16:12:27,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:27,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688305747] [2024-01-27 16:12:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:27,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:27,697 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 16:12:27,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:27,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688305747] [2024-01-27 16:12:27,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688305747] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:27,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:27,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:12:27,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282009091] [2024-01-27 16:12:27,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:27,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:12:27,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:27,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:12:27,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:12:27,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-01-27 16:12:27,760 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 16:12:27,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:27,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-01-27 16:12:27,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:28,435 INFO L124 PetriNetUnfolderBase]: 2495/4136 cut-off events. [2024-01-27 16:12:28,436 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-27 16:12:28,446 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 16:12:28,464 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 37 selfloop transitions, 2 changer transitions 2/61 dead transitions. [2024-01-27 16:12:28,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2024-01-27 16:12:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:12:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:12:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-01-27 16:12:28,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-01-27 16:12:28,475 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 116 transitions. [2024-01-27 16:12:28,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2024-01-27 16:12:28,480 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 16:12:28,485 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2024-01-27 16:12:28,486 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 16:12:28,490 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-01-27 16:12:28,491 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2024-01-27 16:12:28,491 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 16:12:28,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:28,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:28,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:12:28,492 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 16:12:28,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:28,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1256845437, now seen corresponding path program 1 times [2024-01-27 16:12:28,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:28,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712250302] [2024-01-27 16:12:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:28,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:28,807 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 16:12:28,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:28,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712250302] [2024-01-27 16:12:28,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712250302] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:28,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:28,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:12:28,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93435203] [2024-01-27 16:12:28,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:28,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:12:28,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:28,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:12:28,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:12:28,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:12:28,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 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 16:12:28,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:28,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:12:28,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:30,025 INFO L124 PetriNetUnfolderBase]: 7385/11119 cut-off events. [2024-01-27 16:12:30,026 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2024-01-27 16:12:30,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21909 conditions, 11119 events. 7385/11119 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 80028 event pairs, 1343 based on Foata normal form. 0/10860 useless extension candidates. Maximal degree in co-relation 21899. Up to 6319 conditions per place. [2024-01-27 16:12:30,133 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 40 selfloop transitions, 3 changer transitions 58/116 dead transitions. [2024-01-27 16:12:30,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 116 transitions, 464 flow [2024-01-27 16:12:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:12:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:12:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-01-27 16:12:30,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6505102040816326 [2024-01-27 16:12:30,136 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 8 states and 255 transitions. [2024-01-27 16:12:30,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 116 transitions, 464 flow [2024-01-27 16:12:30,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 116 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:12:30,138 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 125 flow [2024-01-27 16:12:30,139 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=125, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2024-01-27 16:12:30,139 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2024-01-27 16:12:30,139 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 125 flow [2024-01-27 16:12:30,140 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 16:12:30,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:30,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:30,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:12:30,140 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 16:12:30,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:30,141 INFO L85 PathProgramCache]: Analyzing trace with hash -363794704, now seen corresponding path program 1 times [2024-01-27 16:12:30,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:30,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744802872] [2024-01-27 16:12:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:30,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:30,275 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 16:12:30,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:30,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744802872] [2024-01-27 16:12:30,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744802872] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:30,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:30,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:12:30,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107405466] [2024-01-27 16:12:30,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:30,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:12:30,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:30,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:12:30,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:12:30,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-01-27 16:12:30,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 16:12:30,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:30,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-01-27 16:12:30,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:33,809 INFO L124 PetriNetUnfolderBase]: 28080/40262 cut-off events. [2024-01-27 16:12:33,810 INFO L125 PetriNetUnfolderBase]: For 21583/21586 co-relation queries the response was YES. [2024-01-27 16:12:33,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94394 conditions, 40262 events. 28080/40262 cut-off events. For 21583/21586 co-relation queries the response was YES. Maximal size of possible extension queue 1791. Compared 280931 event pairs, 1574 based on Foata normal form. 1026/41263 useless extension candidates. Maximal degree in co-relation 94379. Up to 17030 conditions per place. [2024-01-27 16:12:34,287 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 62 selfloop transitions, 12 changer transitions 89/174 dead transitions. [2024-01-27 16:12:34,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 174 transitions, 849 flow [2024-01-27 16:12:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:12:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:12:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-01-27 16:12:34,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-01-27 16:12:34,290 INFO L175 Difference]: Start difference. First operand has 63 places, 43 transitions, 125 flow. Second operand 10 states and 310 transitions. [2024-01-27 16:12:34,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 174 transitions, 849 flow [2024-01-27 16:12:34,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 174 transitions, 828 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-27 16:12:34,612 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 258 flow [2024-01-27 16:12:34,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=258, PETRI_PLACES=72, PETRI_TRANSITIONS=54} [2024-01-27 16:12:34,613 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-01-27 16:12:34,613 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 258 flow [2024-01-27 16:12:34,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 16:12:34,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:34,614 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] [2024-01-27 16:12:34,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:12:34,614 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 16:12:34,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:34,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2030402595, now seen corresponding path program 1 times [2024-01-27 16:12:34,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:34,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465623826] [2024-01-27 16:12:34,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:34,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:34,731 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 16:12:34,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:34,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465623826] [2024-01-27 16:12:34,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465623826] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:34,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:34,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:12:34,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829420147] [2024-01-27 16:12:34,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:34,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:12:34,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:34,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:12:34,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:12:34,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2024-01-27 16:12:34,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 258 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 16:12:34,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:34,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2024-01-27 16:12:34,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:37,523 INFO L124 PetriNetUnfolderBase]: 17897/28055 cut-off events. [2024-01-27 16:12:37,524 INFO L125 PetriNetUnfolderBase]: For 44436/45480 co-relation queries the response was YES. [2024-01-27 16:12:37,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78398 conditions, 28055 events. 17897/28055 cut-off events. For 44436/45480 co-relation queries the response was YES. Maximal size of possible extension queue 1498. Compared 224253 event pairs, 5171 based on Foata normal form. 938/27808 useless extension candidates. Maximal degree in co-relation 78375. Up to 15220 conditions per place. [2024-01-27 16:12:37,827 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 48 selfloop transitions, 5 changer transitions 27/107 dead transitions. [2024-01-27 16:12:37,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 107 transitions, 586 flow [2024-01-27 16:12:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:12:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:12:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-01-27 16:12:37,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6297376093294461 [2024-01-27 16:12:37,829 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 258 flow. Second operand 7 states and 216 transitions. [2024-01-27 16:12:37,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 107 transitions, 586 flow [2024-01-27 16:12:38,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 107 transitions, 566 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-01-27 16:12:38,059 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 287 flow [2024-01-27 16:12:38,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=287, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-01-27 16:12:38,060 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-01-27 16:12:38,060 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 287 flow [2024-01-27 16:12:38,060 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 16:12:38,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:38,061 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 16:12:38,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:12:38,061 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 16:12:38,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:38,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1745467736, now seen corresponding path program 1 times [2024-01-27 16:12:38,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:38,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154841385] [2024-01-27 16:12:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:38,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:38,183 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 16:12:38,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:38,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154841385] [2024-01-27 16:12:38,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154841385] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:38,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:38,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:12:38,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821206142] [2024-01-27 16:12:38,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:38,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:12:38,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:38,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:12:38,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:12:38,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:12:38,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 287 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 16:12:38,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:38,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:12:38,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:42,721 INFO L124 PetriNetUnfolderBase]: 31481/47934 cut-off events. [2024-01-27 16:12:42,722 INFO L125 PetriNetUnfolderBase]: For 51645/57474 co-relation queries the response was YES. [2024-01-27 16:12:42,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122024 conditions, 47934 events. 31481/47934 cut-off events. For 51645/57474 co-relation queries the response was YES. Maximal size of possible extension queue 2253. Compared 374606 event pairs, 5584 based on Foata normal form. 2149/48368 useless extension candidates. Maximal degree in co-relation 121998. Up to 24447 conditions per place. [2024-01-27 16:12:43,124 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 57 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2024-01-27 16:12:43,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 90 transitions, 507 flow [2024-01-27 16:12:43,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:12:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:12:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-01-27 16:12:43,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6989795918367347 [2024-01-27 16:12:43,126 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 287 flow. Second operand 4 states and 137 transitions. [2024-01-27 16:12:43,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 90 transitions, 507 flow [2024-01-27 16:12:43,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 90 transitions, 498 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-27 16:12:43,586 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 324 flow [2024-01-27 16:12:43,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-01-27 16:12:43,588 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-01-27 16:12:43,588 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 324 flow [2024-01-27 16:12:43,588 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 16:12:43,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:43,593 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] [2024-01-27 16:12:43,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:12:43,594 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 16:12:43,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:43,594 INFO L85 PathProgramCache]: Analyzing trace with hash -154603041, now seen corresponding path program 1 times [2024-01-27 16:12:43,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:43,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673312080] [2024-01-27 16:12:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:43,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:43,772 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 16:12:43,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:43,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673312080] [2024-01-27 16:12:43,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673312080] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:43,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:43,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:12:43,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879329004] [2024-01-27 16:12:43,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:43,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:12:43,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:43,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:12:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:12:43,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-01-27 16:12:43,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 16:12:43,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:43,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-01-27 16:12:43,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:50,624 INFO L124 PetriNetUnfolderBase]: 50263/74782 cut-off events. [2024-01-27 16:12:50,624 INFO L125 PetriNetUnfolderBase]: For 105357/108544 co-relation queries the response was YES. [2024-01-27 16:12:51,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217623 conditions, 74782 events. 50263/74782 cut-off events. For 105357/108544 co-relation queries the response was YES. Maximal size of possible extension queue 3499. Compared 604232 event pairs, 15792 based on Foata normal form. 1245/72110 useless extension candidates. Maximal degree in co-relation 217596. Up to 24260 conditions per place. [2024-01-27 16:12:51,249 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 136 selfloop transitions, 33 changer transitions 12/197 dead transitions. [2024-01-27 16:12:51,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 197 transitions, 1290 flow [2024-01-27 16:12:51,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:12:51,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:12:51,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2024-01-27 16:12:51,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-01-27 16:12:51,251 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 324 flow. Second operand 10 states and 305 transitions. [2024-01-27 16:12:51,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 197 transitions, 1290 flow [2024-01-27 16:12:51,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 197 transitions, 1276 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-27 16:12:51,588 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 690 flow [2024-01-27 16:12:51,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=690, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2024-01-27 16:12:51,589 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-01-27 16:12:51,589 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 690 flow [2024-01-27 16:12:51,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 16:12:51,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:51,590 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] [2024-01-27 16:12:51,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:12:51,590 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 16:12:51,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:51,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1283790768, now seen corresponding path program 1 times [2024-01-27 16:12:51,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:51,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196703322] [2024-01-27 16:12:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:51,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:51,678 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 16:12:51,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:51,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196703322] [2024-01-27 16:12:51,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196703322] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:51,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:51,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:12:51,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685078763] [2024-01-27 16:12:51,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:51,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:12:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:51,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:12:51,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:12:51,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:12:51,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 690 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 16:12:51,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:51,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:12:51,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:57,553 INFO L124 PetriNetUnfolderBase]: 42152/63130 cut-off events. [2024-01-27 16:12:57,553 INFO L125 PetriNetUnfolderBase]: For 110613/120741 co-relation queries the response was YES. [2024-01-27 16:12:58,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182301 conditions, 63130 events. 42152/63130 cut-off events. For 110613/120741 co-relation queries the response was YES. Maximal size of possible extension queue 2564. Compared 486156 event pairs, 5422 based on Foata normal form. 4028/65253 useless extension candidates. Maximal degree in co-relation 182264. Up to 23573 conditions per place. [2024-01-27 16:12:58,140 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 79 selfloop transitions, 10 changer transitions 8/137 dead transitions. [2024-01-27 16:12:58,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 137 transitions, 1062 flow [2024-01-27 16:12:58,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:12:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:12:58,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-01-27 16:12:58,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183673469387755 [2024-01-27 16:12:58,141 INFO L175 Difference]: Start difference. First operand has 90 places, 86 transitions, 690 flow. Second operand 5 states and 176 transitions. [2024-01-27 16:12:58,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 137 transitions, 1062 flow [2024-01-27 16:12:59,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 137 transitions, 1018 flow, removed 22 selfloop flow, removed 0 redundant places. [2024-01-27 16:12:59,212 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 613 flow [2024-01-27 16:12:59,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=613, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-01-27 16:12:59,214 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 39 predicate places. [2024-01-27 16:12:59,215 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 613 flow [2024-01-27 16:12:59,215 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 16:12:59,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:59,215 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, 1] [2024-01-27 16:12:59,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:12:59,216 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 16:12:59,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1404866239, now seen corresponding path program 1 times [2024-01-27 16:12:59,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:59,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359962259] [2024-01-27 16:12:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:59,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:59,463 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 16:12:59,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:59,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359962259] [2024-01-27 16:12:59,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359962259] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:59,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:59,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:12:59,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148570183] [2024-01-27 16:12:59,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:59,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:12:59,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:12:59,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:12:59,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:12:59,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 613 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 16:12:59,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:59,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:12:59,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:04,121 INFO L124 PetriNetUnfolderBase]: 31956/47262 cut-off events. [2024-01-27 16:13:04,121 INFO L125 PetriNetUnfolderBase]: For 84344/91738 co-relation queries the response was YES. [2024-01-27 16:13:04,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145874 conditions, 47262 events. 31956/47262 cut-off events. For 84344/91738 co-relation queries the response was YES. Maximal size of possible extension queue 2193. Compared 347045 event pairs, 3404 based on Foata normal form. 2684/48284 useless extension candidates. Maximal degree in co-relation 145833. Up to 16496 conditions per place. [2024-01-27 16:13:04,539 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 92 selfloop transitions, 14 changer transitions 4/146 dead transitions. [2024-01-27 16:13:04,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 146 transitions, 1082 flow [2024-01-27 16:13:04,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:13:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:13:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-01-27 16:13:04,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7244897959183674 [2024-01-27 16:13:04,541 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 613 flow. Second operand 6 states and 213 transitions. [2024-01-27 16:13:04,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 146 transitions, 1082 flow [2024-01-27 16:13:04,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 146 transitions, 1011 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-01-27 16:13:04,656 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 585 flow [2024-01-27 16:13:04,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=585, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2024-01-27 16:13:04,657 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-01-27 16:13:04,657 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 585 flow [2024-01-27 16:13:04,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 16:13:04,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:04,657 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, 1, 1, 1, 1, 1, 1] [2024-01-27 16:13:04,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 16:13:04,658 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:04,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:04,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1213655159, now seen corresponding path program 1 times [2024-01-27 16:13:04,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:04,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27063768] [2024-01-27 16:13:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:04,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:05,306 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 16:13:05,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:05,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27063768] [2024-01-27 16:13:05,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27063768] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:05,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:05,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 16:13:05,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168651978] [2024-01-27 16:13:05,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:05,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 16:13:05,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:05,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 16:13:05,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-27 16:13:05,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-01-27 16:13:05,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 585 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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 16:13:05,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:05,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-01-27 16:13:05,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand