./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c --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/weaver/test-easy10.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:55:36,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:55:36,849 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:55:36,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:55:36,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:55:36,880 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:55:36,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:55:36,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:55:36,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:55:36,886 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:55:36,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:55:36,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:55:36,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:55:36,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:55:36,889 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:55:36,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:55:36,890 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:55:36,890 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:55:36,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:55:36,890 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:55:36,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:55:36,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:55:36,891 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:55:36,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:55:36,892 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:55:36,892 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:55:36,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:55:36,893 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:55:36,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:55:36,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:55:36,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:55:36,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:55:36,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:55:36,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:55:36,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:55:36,896 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:55:36,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:55:36,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:55:36,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:55:36,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:55:36,897 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:55:36,897 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:55:36,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:55:36,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 [2024-01-27 15:55:37,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:55:37,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:55:37,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:55:37,194 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:55:37,195 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:55:37,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2024-01-27 15:55:38,440 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:55:38,618 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:55:38,618 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2024-01-27 15:55:38,625 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b08eb4f/bc69642805d24f6f851a7ee09500663b/FLAG1d2a66749 [2024-01-27 15:55:38,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b08eb4f/bc69642805d24f6f851a7ee09500663b [2024-01-27 15:55:38,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:55:38,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:55:38,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:55:38,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:55:38,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:55:38,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:38,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f22d08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38, skipping insertion in model container [2024-01-27 15:55:38,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:38,685 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:55:38,851 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3959,3972] [2024-01-27 15:55:38,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:55:38,864 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:55:38,887 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3959,3972] [2024-01-27 15:55:38,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:55:38,902 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:55:38,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38 WrapperNode [2024-01-27 15:55:38,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:55:38,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:55:38,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:55:38,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:55:38,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:38,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:38,941 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 195 [2024-01-27 15:55:38,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:55:38,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:55:38,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:55:38,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:55:38,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:38,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:38,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:38,981 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 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 15:55:38,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:38,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:38,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:39,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:39,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:39,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:39,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:55:39,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:55:39,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:55:39,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:55:39,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (1/1) ... [2024-01-27 15:55:39,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:55:39,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:55:39,065 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 15:55:39,093 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 15:55:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:55:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:55:39,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:55:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:55:39,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:55:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:55:39,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:55:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 15:55:39,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 15:55:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:55:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:55:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:55:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:55:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:55:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:55:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:55:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:55:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:55:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:55:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:55:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:55:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:55:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:55:39,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:55:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:55:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:55:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:55:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:55:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:55:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:55:39,131 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 15:55:39,248 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:55:39,250 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:55:39,442 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:55:39,442 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:55:39,623 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:55:39,623 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:55:39,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:55:39 BoogieIcfgContainer [2024-01-27 15:55:39,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:55:39,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:55:39,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:55:39,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:55:39,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:55:38" (1/3) ... [2024-01-27 15:55:39,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759d27b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:55:39, skipping insertion in model container [2024-01-27 15:55:39,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:55:38" (2/3) ... [2024-01-27 15:55:39,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759d27b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:55:39, skipping insertion in model container [2024-01-27 15:55:39,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:55:39" (3/3) ... [2024-01-27 15:55:39,634 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2024-01-27 15:55:39,643 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:55:39,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:55:39,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:55:39,652 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:55:39,720 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-27 15:55:39,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 55 transitions, 138 flow [2024-01-27 15:55:39,809 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2024-01-27 15:55:39,810 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:55:39,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 0/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-27 15:55:39,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 55 transitions, 138 flow [2024-01-27 15:55:39,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 124 flow [2024-01-27 15:55:39,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:55:39,831 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;@2f30a5f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:55:39,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 15:55:39,858 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:55:39,860 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-01-27 15:55:39,860 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:55:39,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:55:39,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:55:39,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:55:39,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:55:39,871 INFO L85 PathProgramCache]: Analyzing trace with hash 542912041, now seen corresponding path program 1 times [2024-01-27 15:55:39,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:55:39,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183860769] [2024-01-27 15:55:39,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:55:39,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:55:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:55:40,573 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 15:55:40,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:55:40,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183860769] [2024-01-27 15:55:40,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183860769] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:55:40,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:55:40,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:55:40,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526830109] [2024-01-27 15:55:40,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:55:40,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:55:40,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:55:40,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:55:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:55:40,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 55 [2024-01-27 15:55:40,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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 15:55:40,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:55:40,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 55 [2024-01-27 15:55:40,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:55:40,920 INFO L124 PetriNetUnfolderBase]: 711/1408 cut-off events. [2024-01-27 15:55:40,921 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-01-27 15:55:40,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 1408 events. 711/1408 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8967 event pairs, 180 based on Foata normal form. 11/1350 useless extension candidates. Maximal degree in co-relation 2039. Up to 936 conditions per place. [2024-01-27 15:55:40,940 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 35 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-01-27 15:55:40,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 229 flow [2024-01-27 15:55:40,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:55:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:55:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-01-27 15:55:40,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7393939393939394 [2024-01-27 15:55:40,954 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 124 flow. Second operand 3 states and 122 transitions. [2024-01-27 15:55:40,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 229 flow [2024-01-27 15:55:40,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 207 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-27 15:55:40,967 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 116 flow [2024-01-27 15:55:40,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-01-27 15:55:40,974 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2024-01-27 15:55:40,974 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 116 flow [2024-01-27 15:55:40,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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 15:55:40,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:55:40,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:55:40,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:55:40,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:55:40,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:55:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash 165876777, now seen corresponding path program 2 times [2024-01-27 15:55:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:55:40,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632601387] [2024-01-27 15:55:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:55:40,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:55:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:55:41,165 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 15:55:41,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:55:41,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632601387] [2024-01-27 15:55:41,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632601387] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:55:41,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:55:41,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:55:41,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468611848] [2024-01-27 15:55:41,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:55:41,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:55:41,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:55:41,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:55:41,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:55:41,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 55 [2024-01-27 15:55:41,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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 15:55:41,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:55:41,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 55 [2024-01-27 15:55:41,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:55:41,337 INFO L124 PetriNetUnfolderBase]: 665/1268 cut-off events. [2024-01-27 15:55:41,337 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-01-27 15:55:41,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 1268 events. 665/1268 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7797 event pairs, 492 based on Foata normal form. 25/1246 useless extension candidates. Maximal degree in co-relation 2272. Up to 960 conditions per place. [2024-01-27 15:55:41,349 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 33 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-01-27 15:55:41,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 208 flow [2024-01-27 15:55:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:55:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:55:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-27 15:55:41,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-01-27 15:55:41,355 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 116 flow. Second operand 3 states and 120 transitions. [2024-01-27 15:55:41,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 208 flow [2024-01-27 15:55:41,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:55:41,360 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 120 flow [2024-01-27 15:55:41,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-01-27 15:55:41,362 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2024-01-27 15:55:41,363 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 120 flow [2024-01-27 15:55:41,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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 15:55:41,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:55:41,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:55:41,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:55:41,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:55:41,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:55:41,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1773130079, now seen corresponding path program 3 times [2024-01-27 15:55:41,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:55:41,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977009308] [2024-01-27 15:55:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:55:41,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:55:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:55:44,157 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 15:55:44,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:55:44,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977009308] [2024-01-27 15:55:44,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977009308] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:55:44,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:55:44,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-01-27 15:55:44,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115485833] [2024-01-27 15:55:44,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:55:44,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-27 15:55:44,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:55:44,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-27 15:55:44,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-01-27 15:55:44,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-01-27 15:55:44,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 120 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 0 states have call successors, (0), 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 15:55:44,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:55:44,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-01-27 15:55:44,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:55:49,522 INFO L124 PetriNetUnfolderBase]: 32357/46175 cut-off events. [2024-01-27 15:55:49,523 INFO L125 PetriNetUnfolderBase]: For 3868/3868 co-relation queries the response was YES. [2024-01-27 15:55:49,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95530 conditions, 46175 events. 32357/46175 cut-off events. For 3868/3868 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 300785 event pairs, 3923 based on Foata normal form. 1/46158 useless extension candidates. Maximal degree in co-relation 35073. Up to 12967 conditions per place. [2024-01-27 15:55:49,821 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 238 selfloop transitions, 14 changer transitions 23/284 dead transitions. [2024-01-27 15:55:49,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 284 transitions, 1202 flow [2024-01-27 15:55:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-27 15:55:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-27 15:55:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 458 transitions. [2024-01-27 15:55:49,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5948051948051948 [2024-01-27 15:55:49,826 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 120 flow. Second operand 14 states and 458 transitions. [2024-01-27 15:55:49,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 284 transitions, 1202 flow [2024-01-27 15:55:49,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 284 transitions, 1198 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:55:49,836 INFO L231 Difference]: Finished difference. Result has 82 places, 63 transitions, 229 flow [2024-01-27 15:55:49,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=229, PETRI_PLACES=82, PETRI_TRANSITIONS=63} [2024-01-27 15:55:49,838 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2024-01-27 15:55:49,838 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 63 transitions, 229 flow [2024-01-27 15:55:49,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 0 states have call successors, (0), 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 15:55:49,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:55:49,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:55:49,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:55:49,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:55:49,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:55:49,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1606591399, now seen corresponding path program 4 times [2024-01-27 15:55:49,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:55:49,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570839267] [2024-01-27 15:55:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:55:49,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:55:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:55:50,003 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 15:55:50,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:55:50,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570839267] [2024-01-27 15:55:50,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570839267] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:55:50,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:55:50,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:55:50,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867434922] [2024-01-27 15:55:50,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:55:50,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:55:50,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:55:50,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:55:50,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:55:50,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 55 [2024-01-27 15:55:50,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 63 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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 15:55:50,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:55:50,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 55 [2024-01-27 15:55:50,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:55:50,837 INFO L124 PetriNetUnfolderBase]: 4364/7866 cut-off events. [2024-01-27 15:55:50,837 INFO L125 PetriNetUnfolderBase]: For 1822/2115 co-relation queries the response was YES. [2024-01-27 15:55:50,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17816 conditions, 7866 events. 4364/7866 cut-off events. For 1822/2115 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 63935 event pairs, 1565 based on Foata normal form. 89/7048 useless extension candidates. Maximal degree in co-relation 17771. Up to 6099 conditions per place. [2024-01-27 15:55:50,901 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 35 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-01-27 15:55:50,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 74 transitions, 330 flow [2024-01-27 15:55:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:55:50,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:55:50,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-01-27 15:55:50,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7393939393939394 [2024-01-27 15:55:50,903 INFO L175 Difference]: Start difference. First operand has 82 places, 63 transitions, 229 flow. Second operand 3 states and 122 transitions. [2024-01-27 15:55:50,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 74 transitions, 330 flow [2024-01-27 15:55:50,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 325 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-27 15:55:50,943 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 232 flow [2024-01-27 15:55:50,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-01-27 15:55:50,944 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 17 predicate places. [2024-01-27 15:55:50,944 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 232 flow [2024-01-27 15:55:50,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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 15:55:50,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:55:50,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:55:50,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:55:50,945 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:55:50,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:55:50,946 INFO L85 PathProgramCache]: Analyzing trace with hash -882903743, now seen corresponding path program 5 times [2024-01-27 15:55:50,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:55:50,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185156365] [2024-01-27 15:55:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:55:50,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:55:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:55:51,187 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 15:55:51,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:55:51,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185156365] [2024-01-27 15:55:51,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185156365] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:55:51,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:55:51,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:55:51,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504183914] [2024-01-27 15:55:51,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:55:51,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:55:51,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:55:51,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:55:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:55:51,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 55 [2024-01-27 15:55:51,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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 15:55:51,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:55:51,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 55 [2024-01-27 15:55:51,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:55:51,646 INFO L124 PetriNetUnfolderBase]: 3209/6305 cut-off events. [2024-01-27 15:55:51,647 INFO L125 PetriNetUnfolderBase]: For 1554/1640 co-relation queries the response was YES. [2024-01-27 15:55:51,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14344 conditions, 6305 events. 3209/6305 cut-off events. For 1554/1640 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 51789 event pairs, 1137 based on Foata normal form. 129/5933 useless extension candidates. Maximal degree in co-relation 11464. Up to 4559 conditions per place. [2024-01-27 15:55:51,691 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 33 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-01-27 15:55:51,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 71 transitions, 320 flow [2024-01-27 15:55:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:55:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:55:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-27 15:55:51,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-01-27 15:55:51,693 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 232 flow. Second operand 3 states and 120 transitions. [2024-01-27 15:55:51,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 71 transitions, 320 flow [2024-01-27 15:55:51,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 71 transitions, 314 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:55:51,737 INFO L231 Difference]: Finished difference. Result has 81 places, 62 transitions, 228 flow [2024-01-27 15:55:51,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=81, PETRI_TRANSITIONS=62} [2024-01-27 15:55:51,739 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 18 predicate places. [2024-01-27 15:55:51,739 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 62 transitions, 228 flow [2024-01-27 15:55:51,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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 15:55:51,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:55:51,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:55:51,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:55:51,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:55:51,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:55:51,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1767092823, now seen corresponding path program 6 times [2024-01-27 15:55:51,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:55:51,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537228597] [2024-01-27 15:55:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:55:51,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:55:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:55:53,436 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 15:55:53,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:55:53,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537228597] [2024-01-27 15:55:53,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537228597] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:55:53,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:55:53,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-01-27 15:55:53,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788364502] [2024-01-27 15:55:53,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:55:53,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-27 15:55:53,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:55:53,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-27 15:55:53,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-01-27 15:55:53,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-01-27 15:55:53,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 62 transitions, 228 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 0 states have call successors, (0), 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 15:55:53,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:55:53,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-01-27 15:55:53,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:55:59,054 INFO L124 PetriNetUnfolderBase]: 41694/60477 cut-off events. [2024-01-27 15:55:59,054 INFO L125 PetriNetUnfolderBase]: For 37249/37249 co-relation queries the response was YES. [2024-01-27 15:55:59,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159667 conditions, 60477 events. 41694/60477 cut-off events. For 37249/37249 co-relation queries the response was YES. Maximal size of possible extension queue 1662. Compared 414244 event pairs, 8499 based on Foata normal form. 1/60472 useless extension candidates. Maximal degree in co-relation 102824. Up to 19880 conditions per place. [2024-01-27 15:55:59,612 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 266 selfloop transitions, 25 changer transitions 25/325 dead transitions. [2024-01-27 15:55:59,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 325 transitions, 1717 flow [2024-01-27 15:55:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-27 15:55:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-27 15:55:59,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 459 transitions. [2024-01-27 15:55:59,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961038961038961 [2024-01-27 15:55:59,616 INFO L175 Difference]: Start difference. First operand has 81 places, 62 transitions, 228 flow. Second operand 14 states and 459 transitions. [2024-01-27 15:55:59,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 325 transitions, 1717 flow [2024-01-27 15:56:00,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 325 transitions, 1713 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:56:00,111 INFO L231 Difference]: Finished difference. Result has 103 places, 80 transitions, 445 flow [2024-01-27 15:56:00,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=445, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2024-01-27 15:56:00,111 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 40 predicate places. [2024-01-27 15:56:00,112 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 445 flow [2024-01-27 15:56:00,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 0 states have call successors, (0), 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 15:56:00,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:56:00,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:56:00,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:56:00,113 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:56:00,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:56:00,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1157522491, now seen corresponding path program 7 times [2024-01-27 15:56:00,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:56:00,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677210587] [2024-01-27 15:56:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:56:00,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:56:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:56:01,848 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 15:56:01,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:56:01,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677210587] [2024-01-27 15:56:01,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677210587] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:56:01,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:56:01,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-01-27 15:56:01,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113993987] [2024-01-27 15:56:01,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:56:01,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-27 15:56:01,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:56:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-27 15:56:01,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-01-27 15:56:02,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-01-27 15:56:02,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 445 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 0 states have call successors, (0), 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 15:56:02,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:56:02,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-01-27 15:56:02,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:56:13,950 INFO L124 PetriNetUnfolderBase]: 86629/126032 cut-off events. [2024-01-27 15:56:13,950 INFO L125 PetriNetUnfolderBase]: For 213750/213750 co-relation queries the response was YES. [2024-01-27 15:56:14,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390337 conditions, 126032 events. 86629/126032 cut-off events. For 213750/213750 co-relation queries the response was YES. Maximal size of possible extension queue 3792. Compared 947856 event pairs, 18221 based on Foata normal form. 1/126018 useless extension candidates. Maximal degree in co-relation 390013. Up to 39950 conditions per place. [2024-01-27 15:56:15,048 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 301 selfloop transitions, 34 changer transitions 13/357 dead transitions. [2024-01-27 15:56:15,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 357 transitions, 2414 flow [2024-01-27 15:56:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-27 15:56:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-27 15:56:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 457 transitions. [2024-01-27 15:56:15,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5935064935064935 [2024-01-27 15:56:15,052 INFO L175 Difference]: Start difference. First operand has 103 places, 80 transitions, 445 flow. Second operand 14 states and 457 transitions. [2024-01-27 15:56:15,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 357 transitions, 2414 flow [2024-01-27 15:56:20,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 357 transitions, 2340 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-01-27 15:56:20,895 INFO L231 Difference]: Finished difference. Result has 123 places, 104 transitions, 793 flow [2024-01-27 15:56:20,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=793, PETRI_PLACES=123, PETRI_TRANSITIONS=104} [2024-01-27 15:56:20,896 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 60 predicate places. [2024-01-27 15:56:20,896 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 104 transitions, 793 flow [2024-01-27 15:56:20,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 0 states have call successors, (0), 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 15:56:20,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:56:20,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:56:20,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:56:20,897 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:56:20,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:56:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1522266515, now seen corresponding path program 8 times [2024-01-27 15:56:20,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:56:20,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801942980] [2024-01-27 15:56:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:56:20,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:56:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:56:22,418 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 15:56:22,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:56:22,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801942980] [2024-01-27 15:56:22,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801942980] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:56:22,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:56:22,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-01-27 15:56:22,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95473851] [2024-01-27 15:56:22,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:56:22,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-27 15:56:22,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:56:22,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-27 15:56:22,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-01-27 15:56:22,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-01-27 15:56:22,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 104 transitions, 793 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 0 states have call successors, (0), 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 15:56:22,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:56:22,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-01-27 15:56:22,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand