./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a 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/popl20-bad-commit-2.wvr-bad.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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:46:35,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:46:35,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:46:35,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:46:35,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:46:35,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:46:35,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:46:35,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:46:35,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:46:35,280 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:46:35,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:46:35,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:46:35,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:46:35,282 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:46:35,282 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:46:35,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:46:35,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:46:35,282 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:46:35,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:46:35,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:46:35,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:46:35,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:46:35,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:46:35,284 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:46:35,284 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:46:35,284 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:46:35,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:46:35,284 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:46:35,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:46:35,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:46:35,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:46:35,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:46:35,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:46:35,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:46:35,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:46:35,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:46:35,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:46:35,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:46:35,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:46:35,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:46:35,288 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:46:35,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:46:35,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:46:35,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:46:35,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:46:35,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:46:35,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:46:35,572 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:46:35,573 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:46:35,573 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2024-02-19 14:46:36,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:46:36,895 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:46:36,896 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2024-02-19 14:46:36,908 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef862e056/8f626156bf5c460faa19d5b71e8e167a/FLAG26cb62318 [2024-02-19 14:46:36,923 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef862e056/8f626156bf5c460faa19d5b71e8e167a [2024-02-19 14:46:36,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:46:36,926 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:46:36,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:46:36,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:46:36,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:46:36,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:46:36" (1/1) ... [2024-02-19 14:46:36,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cd5206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:36, skipping insertion in model container [2024-02-19 14:46:36,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:46:36" (1/1) ... [2024-02-19 14:46:36,959 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:46:37,127 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/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2024-02-19 14:46:37,140 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:46:37,150 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:46:37,184 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/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2024-02-19 14:46:37,187 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:46:37,200 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:46:37,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37 WrapperNode [2024-02-19 14:46:37,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:46:37,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:46:37,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:46:37,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:46:37,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (1/1) ... [2024-02-19 14:46:37,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (1/1) ... [2024-02-19 14:46:37,249 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 481 [2024-02-19 14:46:37,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:46:37,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:46:37,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:46:37,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:46:37,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (1/1) ... [2024-02-19 14:46:37,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (1/1) ... [2024-02-19 14:46:37,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (1/1) ... [2024-02-19 14:46:37,307 INFO L175 MemorySlicer]: Split 26 memory accesses to 6 slices as follows [2, 2, 2, 2, 16, 2]. 62 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 4, 1]. [2024-02-19 14:46:37,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (1/1) ... [2024-02-19 14:46:37,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (1/1) ... [2024-02-19 14:46:37,333 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (1/1) ... [2024-02-19 14:46:37,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (1/1) ... [2024-02-19 14:46:37,366 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (1/1) ... [2024-02-19 14:46:37,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (1/1) ... [2024-02-19 14:46:37,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:46:37,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:46:37,388 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:46:37,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:46:37,389 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (1/1) ... [2024-02-19 14:46:37,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:46:37,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:46:37,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-19 14:46:37,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-19 14:46:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:46:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:46:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:46:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:46:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:46:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:46:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:46:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-19 14:46:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:46:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:46:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:46:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:46:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:46:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-19 14:46:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:46:37,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:46:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:46:37,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:46:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:46:37,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:46:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-19 14:46:37,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-19 14:46:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:46:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:46:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:46:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:46:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:46:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-19 14:46:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 14:46:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 14:46:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:46:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:46:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:46:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:46:37,531 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:46:37,635 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:46:37,641 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:46:38,161 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:46:38,161 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:46:38,425 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:46:38,425 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-02-19 14:46:38,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:46:38 BoogieIcfgContainer [2024-02-19 14:46:38,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:46:38,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:46:38,427 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:46:38,429 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:46:38,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:46:36" (1/3) ... [2024-02-19 14:46:38,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27592108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:46:38, skipping insertion in model container [2024-02-19 14:46:38,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:46:37" (2/3) ... [2024-02-19 14:46:38,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27592108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:46:38, skipping insertion in model container [2024-02-19 14:46:38,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:46:38" (3/3) ... [2024-02-19 14:46:38,431 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2024-02-19 14:46:38,444 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:46:38,444 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:46:38,444 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:46:38,492 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-19 14:46:38,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 87 transitions, 202 flow [2024-02-19 14:46:38,539 INFO L124 PetriNetUnfolderBase]: 24/83 cut-off events. [2024-02-19 14:46:38,539 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 14:46:38,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 83 events. 24/83 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 177 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 69. Up to 8 conditions per place. [2024-02-19 14:46:38,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 87 transitions, 202 flow [2024-02-19 14:46:38,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 82 transitions, 188 flow [2024-02-19 14:46:38,551 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:46:38,555 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3554be90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:46:38,555 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-19 14:46:38,568 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:46:38,569 INFO L124 PetriNetUnfolderBase]: 24/81 cut-off events. [2024-02-19 14:46:38,569 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 14:46:38,569 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:38,569 INFO L234 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] [2024-02-19 14:46:38,570 INFO L432 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)] === [2024-02-19 14:46:38,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:38,573 INFO L85 PathProgramCache]: Analyzing trace with hash -733316816, now seen corresponding path program 1 times [2024-02-19 14:46:38,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:38,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467590369] [2024-02-19 14:46:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:38,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:38,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467590369] [2024-02-19 14:46:38,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467590369] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:38,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:38,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:46:38,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692835479] [2024-02-19 14:46:38,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:38,769 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-19 14:46:38,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:38,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-19 14:46:38,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-19 14:46:38,831 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2024-02-19 14:46:38,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 188 flow. Second operand has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:38,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:38,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2024-02-19 14:46:38,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:39,597 INFO L124 PetriNetUnfolderBase]: 4193/5313 cut-off events. [2024-02-19 14:46:39,598 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2024-02-19 14:46:39,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10558 conditions, 5313 events. 4193/5313 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 20630 event pairs, 1965 based on Foata normal form. 740/4903 useless extension candidates. Maximal degree in co-relation 8964. Up to 4985 conditions per place. [2024-02-19 14:46:39,636 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 49 selfloop transitions, 0 changer transitions 0/78 dead transitions. [2024-02-19 14:46:39,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 78 transitions, 278 flow [2024-02-19 14:46:39,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-19 14:46:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-19 14:46:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 119 transitions. [2024-02-19 14:46:39,645 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6839080459770115 [2024-02-19 14:46:39,648 INFO L308 CegarLoopForPetriNet]: 71 programPoint places, 1 predicate places. [2024-02-19 14:46:39,648 INFO L507 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 278 flow [2024-02-19 14:46:39,648 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:39,648 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:39,648 INFO L234 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] [2024-02-19 14:46:39,649 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:46:39,649 INFO L432 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)] === [2024-02-19 14:46:39,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:39,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1221352698, now seen corresponding path program 1 times [2024-02-19 14:46:39,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:39,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100201484] [2024-02-19 14:46:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:39,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:39,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:39,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100201484] [2024-02-19 14:46:39,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100201484] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:39,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:39,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:46:39,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743108896] [2024-02-19 14:46:39,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:39,911 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:46:39,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:39,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:46:39,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:46:39,913 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2024-02-19 14:46:39,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:39,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:39,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2024-02-19 14:46:39,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:41,073 INFO L124 PetriNetUnfolderBase]: 8487/12496 cut-off events. [2024-02-19 14:46:41,073 INFO L125 PetriNetUnfolderBase]: For 1995/3263 co-relation queries the response was YES. [2024-02-19 14:46:41,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32925 conditions, 12496 events. 8487/12496 cut-off events. For 1995/3263 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 74633 event pairs, 1965 based on Foata normal form. 1/9587 useless extension candidates. Maximal degree in co-relation 28278. Up to 9958 conditions per place. [2024-02-19 14:46:41,189 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 79 selfloop transitions, 7 changer transitions 1/116 dead transitions. [2024-02-19 14:46:41,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 116 transitions, 625 flow [2024-02-19 14:46:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:46:41,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:46:41,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-02-19 14:46:41,191 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7164750957854407 [2024-02-19 14:46:41,192 INFO L308 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2024-02-19 14:46:41,192 INFO L507 AbstractCegarLoop]: Abstraction has has 74 places, 116 transitions, 625 flow [2024-02-19 14:46:41,193 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:41,193 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:41,193 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:46:41,193 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:46:41,193 INFO L432 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)] === [2024-02-19 14:46:41,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:41,194 INFO L85 PathProgramCache]: Analyzing trace with hash 848587489, now seen corresponding path program 1 times [2024-02-19 14:46:41,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:41,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599160479] [2024-02-19 14:46:41,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:41,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:41,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:41,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599160479] [2024-02-19 14:46:41,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599160479] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:41,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:41,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:46:41,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284025673] [2024-02-19 14:46:41,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:41,272 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:46:41,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:41,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:46:41,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:46:41,274 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2024-02-19 14:46:41,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 116 transitions, 625 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:41,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:41,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2024-02-19 14:46:41,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:43,001 INFO L124 PetriNetUnfolderBase]: 16075/23376 cut-off events. [2024-02-19 14:46:43,001 INFO L125 PetriNetUnfolderBase]: For 9749/12525 co-relation queries the response was YES. [2024-02-19 14:46:43,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80810 conditions, 23376 events. 16075/23376 cut-off events. For 9749/12525 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 149272 event pairs, 1965 based on Foata normal form. 997/19201 useless extension candidates. Maximal degree in co-relation 68216. Up to 18813 conditions per place. [2024-02-19 14:46:43,386 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 143 selfloop transitions, 7 changer transitions 2/181 dead transitions. [2024-02-19 14:46:43,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 181 transitions, 1352 flow [2024-02-19 14:46:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:46:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:46:43,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2024-02-19 14:46:43,390 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7088122605363985 [2024-02-19 14:46:43,391 INFO L308 CegarLoopForPetriNet]: 71 programPoint places, 5 predicate places. [2024-02-19 14:46:43,391 INFO L507 AbstractCegarLoop]: Abstraction has has 76 places, 181 transitions, 1352 flow [2024-02-19 14:46:43,391 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:43,392 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:43,392 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:46:43,392 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:46:43,392 INFO L432 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)] === [2024-02-19 14:46:43,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:43,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1069817757, now seen corresponding path program 1 times [2024-02-19 14:46:43,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:43,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393965332] [2024-02-19 14:46:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:43,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:43,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:43,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393965332] [2024-02-19 14:46:43,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393965332] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:43,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:43,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:46:43,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039621174] [2024-02-19 14:46:43,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:43,495 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:46:43,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:43,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:46:43,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:46:43,497 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2024-02-19 14:46:43,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 181 transitions, 1352 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:43,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:43,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2024-02-19 14:46:43,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:47,599 INFO L124 PetriNetUnfolderBase]: 31371/47712 cut-off events. [2024-02-19 14:46:47,599 INFO L125 PetriNetUnfolderBase]: For 42306/58046 co-relation queries the response was YES. [2024-02-19 14:46:47,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196475 conditions, 47712 events. 31371/47712 cut-off events. For 42306/58046 co-relation queries the response was YES. Maximal size of possible extension queue 1839. Compared 361349 event pairs, 1965 based on Foata normal form. 850/37269 useless extension candidates. Maximal degree in co-relation 166010. Up to 36703 conditions per place. [2024-02-19 14:46:48,193 INFO L140 encePairwiseOnDemand]: 84/87 looper letters, 279 selfloop transitions, 5 changer transitions 4/317 dead transitions. [2024-02-19 14:46:48,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 317 transitions, 3088 flow [2024-02-19 14:46:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:46:48,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:46:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-02-19 14:46:48,196 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7164750957854407 [2024-02-19 14:46:48,198 INFO L308 CegarLoopForPetriNet]: 71 programPoint places, 7 predicate places. [2024-02-19 14:46:48,198 INFO L507 AbstractCegarLoop]: Abstraction has has 78 places, 317 transitions, 3088 flow [2024-02-19 14:46:48,199 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:48,199 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:48,199 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:46:48,199 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-19 14:46:48,199 INFO L432 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)] === [2024-02-19 14:46:48,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:48,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1766920735, now seen corresponding path program 1 times [2024-02-19 14:46:48,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:48,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880941188] [2024-02-19 14:46:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:48,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:48,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:48,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880941188] [2024-02-19 14:46:48,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880941188] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:48,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:48,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:46:48,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737592408] [2024-02-19 14:46:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:48,313 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:46:48,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:48,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:46:48,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:46:48,315 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2024-02-19 14:46:48,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 317 transitions, 3088 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:48,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:48,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2024-02-19 14:46:48,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:57,525 INFO L124 PetriNetUnfolderBase]: 60733/96474 cut-off events. [2024-02-19 14:46:57,526 INFO L125 PetriNetUnfolderBase]: For 145641/190825 co-relation queries the response was YES. [2024-02-19 14:46:58,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456336 conditions, 96474 events. 60733/96474 cut-off events. For 145641/190825 co-relation queries the response was YES. Maximal size of possible extension queue 3424. Compared 847148 event pairs, 1965 based on Foata normal form. 1652/74219 useless extension candidates. Maximal degree in co-relation 392606. Up to 71219 conditions per place. [2024-02-19 14:46:59,203 INFO L140 encePairwiseOnDemand]: 84/87 looper letters, 539 selfloop transitions, 9 changer transitions 8/585 dead transitions. [2024-02-19 14:46:59,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 585 transitions, 7024 flow [2024-02-19 14:46:59,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:46:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:46:59,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-02-19 14:46:59,208 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7164750957854407 [2024-02-19 14:46:59,209 INFO L308 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places. [2024-02-19 14:46:59,209 INFO L507 AbstractCegarLoop]: Abstraction has has 80 places, 585 transitions, 7024 flow [2024-02-19 14:46:59,209 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:59,209 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:59,209 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:46:59,210 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-19 14:46:59,210 INFO L432 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)] === [2024-02-19 14:46:59,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2004494332, now seen corresponding path program 1 times [2024-02-19 14:46:59,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:59,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632974984] [2024-02-19 14:46:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:59,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:59,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:59,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632974984] [2024-02-19 14:46:59,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632974984] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:59,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:59,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:46:59,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153448856] [2024-02-19 14:46:59,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:59,263 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:46:59,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:59,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:46:59,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:46:59,268 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-02-19 14:46:59,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 585 transitions, 7024 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:59,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:59,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-02-19 14:46:59,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:47:17,726 INFO L124 PetriNetUnfolderBase]: 105739/162811 cut-off events. [2024-02-19 14:47:17,727 INFO L125 PetriNetUnfolderBase]: For 505004/630006 co-relation queries the response was YES. [2024-02-19 14:47:18,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 883672 conditions, 162811 events. 105739/162811 cut-off events. For 505004/630006 co-relation queries the response was YES. Maximal size of possible extension queue 5506. Compared 1448493 event pairs, 4793 based on Foata normal form. 734/124374 useless extension candidates. Maximal degree in co-relation 789854. Up to 118203 conditions per place. [2024-02-19 14:47:20,591 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 724 selfloop transitions, 25 changer transitions 12/787 dead transitions. [2024-02-19 14:47:20,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 787 transitions, 11044 flow [2024-02-19 14:47:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:47:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:47:20,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-02-19 14:47:20,593 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6704980842911877 [2024-02-19 14:47:20,593 INFO L308 CegarLoopForPetriNet]: 71 programPoint places, 11 predicate places. [2024-02-19 14:47:20,593 INFO L507 AbstractCegarLoop]: Abstraction has has 82 places, 787 transitions, 11044 flow [2024-02-19 14:47:20,593 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:47:20,594 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:47:20,594 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:47:20,594 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-19 14:47:20,594 INFO L432 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)] === [2024-02-19 14:47:20,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:47:20,595 INFO L85 PathProgramCache]: Analyzing trace with hash 189333532, now seen corresponding path program 1 times [2024-02-19 14:47:20,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:47:20,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815461456] [2024-02-19 14:47:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:47:20,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:47:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:47:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:47:20,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:47:20,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815461456] [2024-02-19 14:47:20,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815461456] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:47:20,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:47:20,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:47:20,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177549074] [2024-02-19 14:47:20,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:47:20,762 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:47:20,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:47:20,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:47:20,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:47:20,763 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2024-02-19 14:47:20,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 787 transitions, 11044 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:47:20,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:47:20,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2024-02-19 14:47:20,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand