./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/popl20-prod-cons-eq.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 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:32:28,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:32:28,199 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:32:28,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:32:28,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:32:28,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:32:28,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:32:28,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:32:28,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:32:28,237 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:32:28,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:32:28,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:32:28,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:32:28,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:32:28,240 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:32:28,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:32:28,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:32:28,241 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:32:28,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:32:28,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:32:28,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:32:28,242 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:32:28,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:32:28,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:32:28,243 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:32:28,243 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:32:28,244 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:32:28,244 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:32:28,244 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:32:28,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:32:28,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:32:28,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:32:28,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:32:28,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:32:28,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:32:28,246 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:32:28,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:32:28,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:32:28,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:32:28,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:32:28,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:32:28,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:32:28,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea [2024-11-16 19:32:28,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:32:28,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:32:28,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:32:28,512 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:32:28,513 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:32:28,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-16 19:32:29,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:32:30,126 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:32:30,127 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-16 19:32:30,135 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d65efbbc/f7f802800b274d94916d88f4190aaed1/FLAG77bbe201f [2024-11-16 19:32:30,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d65efbbc/f7f802800b274d94916d88f4190aaed1 [2024-11-16 19:32:30,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:32:30,525 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:32:30,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:32:30,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:32:30,532 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:32:30,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:30,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da25e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30, skipping insertion in model container [2024-11-16 19:32:30,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:30,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:32:30,811 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4541,4554] [2024-11-16 19:32:30,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:32:30,840 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:32:30,868 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4541,4554] [2024-11-16 19:32:30,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:32:30,893 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:32:30,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30 WrapperNode [2024-11-16 19:32:30,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:32:30,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:32:30,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:32:30,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:32:30,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:30,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:30,942 INFO L138 Inliner]: procedures = 27, calls = 67, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 396 [2024-11-16 19:32:30,943 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:32:30,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:32:30,944 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:32:30,944 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:32:30,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:30,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:30,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:30,999 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 16, 3, 3]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 4, 1, 1]. [2024-11-16 19:32:30,999 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:31,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:31,012 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:31,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:31,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:31,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:31,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:32:31,040 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:32:31,041 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:32:31,041 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:32:31,042 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (1/1) ... [2024-11-16 19:32:31,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:32:31,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:32:31,085 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) [2024-11-16 19:32:31,087 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 [2024-11-16 19:32:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:32:31,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 19:32:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 19:32:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 19:32:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-16 19:32:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:32:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:32:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 19:32:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 19:32:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:32:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:32:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 19:32:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 19:32:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 19:32:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 19:32:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 19:32:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-16 19:32:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:32:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:32:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:32:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:32:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:32:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:32:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:32:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:32:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 19:32:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 19:32:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:32:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:32:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:32:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:32:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:32:31,145 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:32:31,357 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:32:31,359 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:32:31,968 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:32:31,969 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:32:32,402 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:32:32,403 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:32:32,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:32:32 BoogieIcfgContainer [2024-11-16 19:32:32,403 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:32:32,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:32:32,406 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:32:32,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:32:32,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:32:30" (1/3) ... [2024-11-16 19:32:32,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fd04c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:32:32, skipping insertion in model container [2024-11-16 19:32:32,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:32:30" (2/3) ... [2024-11-16 19:32:32,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fd04c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:32:32, skipping insertion in model container [2024-11-16 19:32:32,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:32:32" (3/3) ... [2024-11-16 19:32:32,412 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2024-11-16 19:32:32,430 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:32:32,431 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:32:32,431 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:32:32,492 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:32:32,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 70 transitions, 161 flow [2024-11-16 19:32:32,557 INFO L124 PetriNetUnfolderBase]: 18/67 cut-off events. [2024-11-16 19:32:32,557 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:32:32,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 18/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-11-16 19:32:32,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 70 transitions, 161 flow [2024-11-16 19:32:32,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 66 transitions, 150 flow [2024-11-16 19:32:32,574 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:32:32,581 INFO L333 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, 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;@12d10754, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:32:32,581 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:32:32,606 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:32:32,607 INFO L124 PetriNetUnfolderBase]: 18/65 cut-off events. [2024-11-16 19:32:32,607 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:32:32,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:32,608 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:32:32,608 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:32,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1956424094, now seen corresponding path program 1 times [2024-11-16 19:32:32,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:32,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408684953] [2024-11-16 19:32:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:32,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:32:32,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:32,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408684953] [2024-11-16 19:32:32,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408684953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:32:32,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:32:32,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:32:32,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994338763] [2024-11-16 19:32:32,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:32,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:32:32,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:32:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:32:32,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 70 [2024-11-16 19:32:32,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 66 transitions, 150 flow. Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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) [2024-11-16 19:32:32,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:32,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 70 [2024-11-16 19:32:32,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:33,154 INFO L124 PetriNetUnfolderBase]: 453/830 cut-off events. [2024-11-16 19:32:33,155 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-16 19:32:33,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 830 events. 453/830 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4333 event pairs, 262 based on Foata normal form. 186/893 useless extension candidates. Maximal degree in co-relation 1375. Up to 635 conditions per place. [2024-11-16 19:32:33,168 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 33 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2024-11-16 19:32:33,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 198 flow [2024-11-16 19:32:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:32:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:32:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 96 transitions. [2024-11-16 19:32:33,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-11-16 19:32:33,183 INFO L175 Difference]: Start difference. First operand has 58 places, 66 transitions, 150 flow. Second operand 2 states and 96 transitions. [2024-11-16 19:32:33,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 198 flow [2024-11-16 19:32:33,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 186 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-16 19:32:33,192 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 120 flow [2024-11-16 19:32:33,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2024-11-16 19:32:33,200 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2024-11-16 19:32:33,201 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 120 flow [2024-11-16 19:32:33,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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) [2024-11-16 19:32:33,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:33,201 INFO L204 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] [2024-11-16 19:32:33,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:32:33,202 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:33,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash -151349645, now seen corresponding path program 1 times [2024-11-16 19:32:33,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290789913] [2024-11-16 19:32:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:33,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:32:33,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:33,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290789913] [2024-11-16 19:32:33,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290789913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:32:33,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:32:33,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:32:33,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864929666] [2024-11-16 19:32:33,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:33,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:32:33,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:33,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:32:33,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:32:33,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 70 [2024-11-16 19:32:33,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-16 19:32:33,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:33,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 70 [2024-11-16 19:32:33,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:33,723 INFO L124 PetriNetUnfolderBase]: 681/1218 cut-off events. [2024-11-16 19:32:33,724 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-16 19:32:33,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 1218 events. 681/1218 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6800 event pairs, 148 based on Foata normal form. 1/1120 useless extension candidates. Maximal degree in co-relation 2206. Up to 645 conditions per place. [2024-11-16 19:32:33,736 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 44 selfloop transitions, 3 changer transitions 1/72 dead transitions. [2024-11-16 19:32:33,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 250 flow [2024-11-16 19:32:33,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:32:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:32:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-16 19:32:33,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-16 19:32:33,740 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 120 flow. Second operand 3 states and 130 transitions. [2024-11-16 19:32:33,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 250 flow [2024-11-16 19:32:33,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:32:33,745 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 139 flow [2024-11-16 19:32:33,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2024-11-16 19:32:33,746 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -2 predicate places. [2024-11-16 19:32:33,746 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 139 flow [2024-11-16 19:32:33,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-16 19:32:33,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:33,747 INFO L204 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, 1, 1, 1] [2024-11-16 19:32:33,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:32:33,748 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:33,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash -721470958, now seen corresponding path program 1 times [2024-11-16 19:32:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:33,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41247564] [2024-11-16 19:32:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:33,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:32:33,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:33,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41247564] [2024-11-16 19:32:33,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41247564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:32:33,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:32:33,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:32:33,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316082633] [2024-11-16 19:32:33,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:33,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:32:33,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:33,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:32:33,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:32:33,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-11-16 19:32:33,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:32:33,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:33,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-11-16 19:32:33,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:34,317 INFO L124 PetriNetUnfolderBase]: 857/1608 cut-off events. [2024-11-16 19:32:34,317 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2024-11-16 19:32:34,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3161 conditions, 1608 events. 857/1608 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9893 event pairs, 555 based on Foata normal form. 46/1440 useless extension candidates. Maximal degree in co-relation 3156. Up to 939 conditions per place. [2024-11-16 19:32:34,328 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 37 selfloop transitions, 2 changer transitions 18/80 dead transitions. [2024-11-16 19:32:34,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 301 flow [2024-11-16 19:32:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:32:34,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:32:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-11-16 19:32:34,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5342857142857143 [2024-11-16 19:32:34,335 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 139 flow. Second operand 5 states and 187 transitions. [2024-11-16 19:32:34,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 301 flow [2024-11-16 19:32:34,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:32:34,338 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 154 flow [2024-11-16 19:32:34,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2024-11-16 19:32:34,340 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2024-11-16 19:32:34,340 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 154 flow [2024-11-16 19:32:34,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:32:34,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:34,341 INFO L204 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, 1, 1, 1, 1, 1] [2024-11-16 19:32:34,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:32:34,341 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:34,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:34,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1913834157, now seen corresponding path program 1 times [2024-11-16 19:32:34,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:34,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774275413] [2024-11-16 19:32:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:34,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:32:34,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:34,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774275413] [2024-11-16 19:32:34,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774275413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:32:34,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:32:34,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:32:34,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804657083] [2024-11-16 19:32:34,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:34,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:32:34,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:34,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:32:34,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:32:34,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-16 19:32:34,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-11-16 19:32:34,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:34,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-16 19:32:34,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:34,948 INFO L124 PetriNetUnfolderBase]: 807/1540 cut-off events. [2024-11-16 19:32:34,948 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-11-16 19:32:34,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3098 conditions, 1540 events. 807/1540 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9490 event pairs, 524 based on Foata normal form. 57/1379 useless extension candidates. Maximal degree in co-relation 3090. Up to 946 conditions per place. [2024-11-16 19:32:34,959 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 70 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-11-16 19:32:34,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 394 flow [2024-11-16 19:32:34,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:32:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:32:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2024-11-16 19:32:34,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-11-16 19:32:34,961 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 154 flow. Second operand 5 states and 186 transitions. [2024-11-16 19:32:34,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 394 flow [2024-11-16 19:32:34,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 94 transitions, 380 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-16 19:32:34,964 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 178 flow [2024-11-16 19:32:34,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2024-11-16 19:32:34,966 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2024-11-16 19:32:34,967 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 178 flow [2024-11-16 19:32:34,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-11-16 19:32:34,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:34,968 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1] [2024-11-16 19:32:34,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:32:34,969 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:34,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:34,969 INFO L85 PathProgramCache]: Analyzing trace with hash -888710453, now seen corresponding path program 1 times [2024-11-16 19:32:34,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:34,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936216390] [2024-11-16 19:32:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:34,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:32:35,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:35,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936216390] [2024-11-16 19:32:35,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936216390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:32:35,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:32:35,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:32:35,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450919185] [2024-11-16 19:32:35,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:35,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:32:35,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:35,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:32:35,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:32:35,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-16 19:32:35,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2024-11-16 19:32:35,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:35,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-16 19:32:35,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:35,599 INFO L124 PetriNetUnfolderBase]: 1159/2360 cut-off events. [2024-11-16 19:32:35,600 INFO L125 PetriNetUnfolderBase]: For 782/782 co-relation queries the response was YES. [2024-11-16 19:32:35,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4822 conditions, 2360 events. 1159/2360 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 16923 event pairs, 826 based on Foata normal form. 67/2085 useless extension candidates. Maximal degree in co-relation 4813. Up to 1192 conditions per place. [2024-11-16 19:32:35,615 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 71 selfloop transitions, 10 changer transitions 1/102 dead transitions. [2024-11-16 19:32:35,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 444 flow [2024-11-16 19:32:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:32:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:32:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-11-16 19:32:35,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-16 19:32:35,617 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 178 flow. Second operand 5 states and 190 transitions. [2024-11-16 19:32:35,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 444 flow [2024-11-16 19:32:35,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 102 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:32:35,620 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 255 flow [2024-11-16 19:32:35,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-11-16 19:32:35,621 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2024-11-16 19:32:35,621 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 255 flow [2024-11-16 19:32:35,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2024-11-16 19:32:35,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:35,622 INFO L204 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:32:35,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:32:35,622 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:35,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash 721138170, now seen corresponding path program 1 times [2024-11-16 19:32:35,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:35,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503481328] [2024-11-16 19:32:35,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:35,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:32:35,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:35,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503481328] [2024-11-16 19:32:35,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503481328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:32:35,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:32:35,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:32:35,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069814307] [2024-11-16 19:32:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:35,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:32:35,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:35,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:32:35,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:32:35,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 70 [2024-11-16 19:32:35,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:32:35,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:35,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 70 [2024-11-16 19:32:35,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:35,996 INFO L124 PetriNetUnfolderBase]: 908/1800 cut-off events. [2024-11-16 19:32:35,996 INFO L125 PetriNetUnfolderBase]: For 1014/1014 co-relation queries the response was YES. [2024-11-16 19:32:36,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4018 conditions, 1800 events. 908/1800 cut-off events. For 1014/1014 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11297 event pairs, 317 based on Foata normal form. 50/1688 useless extension candidates. Maximal degree in co-relation 4006. Up to 855 conditions per place. [2024-11-16 19:32:36,008 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 52 selfloop transitions, 2 changer transitions 9/87 dead transitions. [2024-11-16 19:32:36,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 87 transitions, 430 flow [2024-11-16 19:32:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:32:36,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:32:36,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-16 19:32:36,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-16 19:32:36,010 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 255 flow. Second operand 3 states and 130 transitions. [2024-11-16 19:32:36,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 87 transitions, 430 flow [2024-11-16 19:32:36,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 87 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:32:36,016 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 208 flow [2024-11-16 19:32:36,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-11-16 19:32:36,018 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-11-16 19:32:36,019 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 208 flow [2024-11-16 19:32:36,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:32:36,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:36,019 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1] [2024-11-16 19:32:36,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:32:36,020 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:36,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:36,020 INFO L85 PathProgramCache]: Analyzing trace with hash 233113947, now seen corresponding path program 1 times [2024-11-16 19:32:36,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:36,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996474916] [2024-11-16 19:32:36,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:36,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:32:36,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:36,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996474916] [2024-11-16 19:32:36,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996474916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:32:36,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484903080] [2024-11-16 19:32:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:36,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:32:36,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:32:36,238 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:32:36,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:32:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:36,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:32:36,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:32:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:32:36,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:32:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:32:36,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484903080] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:32:36,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:32:36,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2024-11-16 19:32:36,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835005853] [2024-11-16 19:32:36,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:36,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:32:36,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:36,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:32:36,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 19:32:36,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2024-11-16 19:32:36,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:32:36,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:36,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2024-11-16 19:32:36,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:36,825 INFO L124 PetriNetUnfolderBase]: 667/1227 cut-off events. [2024-11-16 19:32:36,825 INFO L125 PetriNetUnfolderBase]: For 1168/1190 co-relation queries the response was YES. [2024-11-16 19:32:36,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3019 conditions, 1227 events. 667/1227 cut-off events. For 1168/1190 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7111 event pairs, 461 based on Foata normal form. 0/1063 useless extension candidates. Maximal degree in co-relation 3006. Up to 978 conditions per place. [2024-11-16 19:32:36,832 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 41 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2024-11-16 19:32:36,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 300 flow [2024-11-16 19:32:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:32:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:32:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-11-16 19:32:36,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43142857142857144 [2024-11-16 19:32:36,834 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 208 flow. Second operand 5 states and 151 transitions. [2024-11-16 19:32:36,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 300 flow [2024-11-16 19:32:36,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 284 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-16 19:32:36,837 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 208 flow [2024-11-16 19:32:36,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-11-16 19:32:36,838 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2024-11-16 19:32:36,838 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 208 flow [2024-11-16 19:32:36,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:32:36,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:36,838 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-16 19:32:36,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 19:32:37,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:32:37,040 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:37,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:37,041 INFO L85 PathProgramCache]: Analyzing trace with hash -463605795, now seen corresponding path program 1 times [2024-11-16 19:32:37,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:37,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746268284] [2024-11-16 19:32:37,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:37,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:32:37,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:37,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746268284] [2024-11-16 19:32:37,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746268284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:32:37,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:32:37,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:32:37,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436550588] [2024-11-16 19:32:37,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:37,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:32:37,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:37,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:32:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:32:37,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-11-16 19:32:37,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:32:37,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:37,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-11-16 19:32:37,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:37,525 INFO L124 PetriNetUnfolderBase]: 930/1517 cut-off events. [2024-11-16 19:32:37,525 INFO L125 PetriNetUnfolderBase]: For 1406/1428 co-relation queries the response was YES. [2024-11-16 19:32:37,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3892 conditions, 1517 events. 930/1517 cut-off events. For 1406/1428 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8173 event pairs, 183 based on Foata normal form. 30/1473 useless extension candidates. Maximal degree in co-relation 3880. Up to 942 conditions per place. [2024-11-16 19:32:37,536 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 54 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-11-16 19:32:37,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 374 flow [2024-11-16 19:32:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:32:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:32:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-11-16 19:32:37,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6047619047619047 [2024-11-16 19:32:37,538 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 208 flow. Second operand 3 states and 127 transitions. [2024-11-16 19:32:37,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 374 flow [2024-11-16 19:32:37,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 79 transitions, 368 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:32:37,540 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 214 flow [2024-11-16 19:32:37,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-11-16 19:32:37,543 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2024-11-16 19:32:37,543 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 214 flow [2024-11-16 19:32:37,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:32:37,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:37,545 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:32:37,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:32:37,545 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:37,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1779821319, now seen corresponding path program 1 times [2024-11-16 19:32:37,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:37,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4119091] [2024-11-16 19:32:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:37,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:32:37,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:37,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4119091] [2024-11-16 19:32:37,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4119091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:32:37,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:32:37,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:32:37,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357284012] [2024-11-16 19:32:37,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:37,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:32:37,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:37,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:32:37,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:32:37,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-16 19:32:37,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-11-16 19:32:37,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:37,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-16 19:32:37,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:38,031 INFO L124 PetriNetUnfolderBase]: 850/1529 cut-off events. [2024-11-16 19:32:38,031 INFO L125 PetriNetUnfolderBase]: For 1475/1488 co-relation queries the response was YES. [2024-11-16 19:32:38,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3959 conditions, 1529 events. 850/1529 cut-off events. For 1475/1488 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8580 event pairs, 584 based on Foata normal form. 29/1444 useless extension candidates. Maximal degree in co-relation 3946. Up to 1175 conditions per place. [2024-11-16 19:32:38,042 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 44 selfloop transitions, 2 changer transitions 22/88 dead transitions. [2024-11-16 19:32:38,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 88 transitions, 423 flow [2024-11-16 19:32:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:32:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:32:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-11-16 19:32:38,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4942857142857143 [2024-11-16 19:32:38,044 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 214 flow. Second operand 5 states and 173 transitions. [2024-11-16 19:32:38,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 88 transitions, 423 flow [2024-11-16 19:32:38,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 88 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:32:38,048 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 228 flow [2024-11-16 19:32:38,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2024-11-16 19:32:38,050 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2024-11-16 19:32:38,050 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 228 flow [2024-11-16 19:32:38,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-11-16 19:32:38,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:38,050 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:32:38,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 19:32:38,051 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:38,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:38,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1779805206, now seen corresponding path program 1 times [2024-11-16 19:32:38,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:38,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055261358] [2024-11-16 19:32:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:38,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 19:32:38,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:38,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055261358] [2024-11-16 19:32:38,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055261358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:32:38,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:32:38,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:32:38,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012143237] [2024-11-16 19:32:38,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:38,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:32:38,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:38,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:32:38,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:32:38,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-16 19:32:38,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:32:38,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:38,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-16 19:32:38,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:38,698 INFO L124 PetriNetUnfolderBase]: 1050/1910 cut-off events. [2024-11-16 19:32:38,698 INFO L125 PetriNetUnfolderBase]: For 1939/1961 co-relation queries the response was YES. [2024-11-16 19:32:38,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4833 conditions, 1910 events. 1050/1910 cut-off events. For 1939/1961 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11756 event pairs, 770 based on Foata normal form. 71/1855 useless extension candidates. Maximal degree in co-relation 4817. Up to 1176 conditions per place. [2024-11-16 19:32:38,713 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 45 selfloop transitions, 2 changer transitions 28/95 dead transitions. [2024-11-16 19:32:38,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 95 transitions, 464 flow [2024-11-16 19:32:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:32:38,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:32:38,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2024-11-16 19:32:38,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-16 19:32:38,714 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 228 flow. Second operand 5 states and 180 transitions. [2024-11-16 19:32:38,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 95 transitions, 464 flow [2024-11-16 19:32:38,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 456 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-16 19:32:38,718 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 244 flow [2024-11-16 19:32:38,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-11-16 19:32:38,719 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2024-11-16 19:32:38,719 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 244 flow [2024-11-16 19:32:38,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:32:38,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:38,720 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:32:38,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 19:32:38,720 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:38,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1697605063, now seen corresponding path program 1 times [2024-11-16 19:32:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:38,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136163188] [2024-11-16 19:32:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:38,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:38,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 19:32:38,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:38,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136163188] [2024-11-16 19:32:38,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136163188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:32:38,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:32:38,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:32:38,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669888097] [2024-11-16 19:32:38,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:38,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:32:38,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:38,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:32:38,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:32:38,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 70 [2024-11-16 19:32:38,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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) [2024-11-16 19:32:38,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:38,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 70 [2024-11-16 19:32:38,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:39,481 INFO L124 PetriNetUnfolderBase]: 1572/2483 cut-off events. [2024-11-16 19:32:39,481 INFO L125 PetriNetUnfolderBase]: For 2955/2970 co-relation queries the response was YES. [2024-11-16 19:32:39,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6825 conditions, 2483 events. 1572/2483 cut-off events. For 2955/2970 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 13764 event pairs, 362 based on Foata normal form. 137/2582 useless extension candidates. Maximal degree in co-relation 6808. Up to 766 conditions per place. [2024-11-16 19:32:39,499 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 79 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2024-11-16 19:32:39,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 110 transitions, 601 flow [2024-11-16 19:32:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:32:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:32:39,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-11-16 19:32:39,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5514285714285714 [2024-11-16 19:32:39,501 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 244 flow. Second operand 5 states and 193 transitions. [2024-11-16 19:32:39,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 110 transitions, 601 flow [2024-11-16 19:32:39,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 110 transitions, 577 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-16 19:32:39,504 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 304 flow [2024-11-16 19:32:39,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-11-16 19:32:39,505 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2024-11-16 19:32:39,505 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 304 flow [2024-11-16 19:32:39,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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) [2024-11-16 19:32:39,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:39,506 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:32:39,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 19:32:39,506 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:39,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:39,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1218881439, now seen corresponding path program 2 times [2024-11-16 19:32:39,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:39,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92040628] [2024-11-16 19:32:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:39,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 19:32:39,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:39,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92040628] [2024-11-16 19:32:39,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92040628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:32:39,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986713603] [2024-11-16 19:32:39,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:32:39,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:32:39,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:32:39,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:32:39,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:32:39,933 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:32:39,934 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:32:39,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 19:32:39,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:32:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 19:32:40,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:32:40,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986713603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:32:40,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:32:40,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-16 19:32:40,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002674859] [2024-11-16 19:32:40,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:40,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:32:40,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:40,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:32:40,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:32:40,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-11-16 19:32:40,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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) [2024-11-16 19:32:40,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:40,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-11-16 19:32:40,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:40,690 INFO L124 PetriNetUnfolderBase]: 2290/3852 cut-off events. [2024-11-16 19:32:40,690 INFO L125 PetriNetUnfolderBase]: For 5755/5770 co-relation queries the response was YES. [2024-11-16 19:32:40,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11770 conditions, 3852 events. 2290/3852 cut-off events. For 5755/5770 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24065 event pairs, 190 based on Foata normal form. 69/3885 useless extension candidates. Maximal degree in co-relation 11752. Up to 998 conditions per place. [2024-11-16 19:32:40,720 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 91 selfloop transitions, 16 changer transitions 0/132 dead transitions. [2024-11-16 19:32:40,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 132 transitions, 803 flow [2024-11-16 19:32:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:32:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:32:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-11-16 19:32:40,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-11-16 19:32:40,722 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 304 flow. Second operand 6 states and 234 transitions. [2024-11-16 19:32:40,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 132 transitions, 803 flow [2024-11-16 19:32:40,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 132 transitions, 799 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-16 19:32:40,729 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 459 flow [2024-11-16 19:32:40,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=459, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2024-11-16 19:32:40,729 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 32 predicate places. [2024-11-16 19:32:40,730 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 459 flow [2024-11-16 19:32:40,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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) [2024-11-16 19:32:40,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:40,730 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:32:40,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 19:32:40,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 19:32:40,931 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:40,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:40,932 INFO L85 PathProgramCache]: Analyzing trace with hash 173118318, now seen corresponding path program 1 times [2024-11-16 19:32:40,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:40,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661830632] [2024-11-16 19:32:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:40,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 19:32:41,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:41,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661830632] [2024-11-16 19:32:41,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661830632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:32:41,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:32:41,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:32:41,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481507588] [2024-11-16 19:32:41,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:32:41,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:32:41,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:32:41,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:32:41,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:32:41,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-11-16 19:32:41,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 459 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-16 19:32:41,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:32:41,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-11-16 19:32:41,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:32:41,748 INFO L124 PetriNetUnfolderBase]: 2306/3848 cut-off events. [2024-11-16 19:32:41,749 INFO L125 PetriNetUnfolderBase]: For 11772/11831 co-relation queries the response was YES. [2024-11-16 19:32:41,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14133 conditions, 3848 events. 2306/3848 cut-off events. For 11772/11831 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 22556 event pairs, 590 based on Foata normal form. 212/4016 useless extension candidates. Maximal degree in co-relation 14110. Up to 2126 conditions per place. [2024-11-16 19:32:41,788 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 88 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2024-11-16 19:32:41,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 116 transitions, 881 flow [2024-11-16 19:32:41,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:32:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:32:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-11-16 19:32:41,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-16 19:32:41,790 INFO L175 Difference]: Start difference. First operand has 90 places, 86 transitions, 459 flow. Second operand 3 states and 125 transitions. [2024-11-16 19:32:41,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 116 transitions, 881 flow [2024-11-16 19:32:41,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 116 transitions, 876 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-16 19:32:41,802 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 477 flow [2024-11-16 19:32:41,804 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2024-11-16 19:32:41,805 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 34 predicate places. [2024-11-16 19:32:41,805 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 477 flow [2024-11-16 19:32:41,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-16 19:32:41,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:32:41,806 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:32:41,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 19:32:41,806 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:32:41,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:32:41,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1443790445, now seen corresponding path program 1 times [2024-11-16 19:32:41,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:32:41,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560175121] [2024-11-16 19:32:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:41,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:32:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:32:43,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:32:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560175121] [2024-11-16 19:32:43,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560175121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:32:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977203295] [2024-11-16 19:32:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:32:43,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:32:43,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:32:43,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:32:43,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:32:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:32:43,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 19:32:43,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:32:43,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-16 19:32:44,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-16 19:32:44,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-16 19:32:44,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2024-11-16 19:32:44,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-16 19:32:44,402 INFO L349 Elim1Store]: treesize reduction 20, result has 62.3 percent of original size [2024-11-16 19:32:44,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2024-11-16 19:32:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:32:44,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:32:45,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 91 [2024-11-16 19:32:45,693 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:32:45,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 314 treesize of output 298 [2024-11-16 19:32:45,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 274 [2024-11-16 19:32:45,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:32:45,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 806 treesize of output 718 [2024-11-16 19:32:58,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:32:58,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1593 treesize of output 1533 [2024-11-16 19:32:58,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2024-11-16 19:32:59,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:32:59,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 245 treesize of output 245 [2024-11-16 19:33:00,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 762 treesize of output 666