./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB --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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:34:12,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:34:12,883 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:34:12,888 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:34:12,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:34:12,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:34:12,919 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:34:12,919 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:34:12,919 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:34:12,920 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:34:12,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:34:12,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:34:12,920 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:34:12,920 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:34:12,921 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:34:12,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:34:12,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:34:12,921 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:34:12,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:34:12,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:34:12,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:34:12,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:34:12,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:34:12,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:34:12,922 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:34:12,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:34:12,922 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:34:12,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:34:12,923 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:34:12,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:34:12,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:34:12,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:34:12,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:34:12,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:34:12,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:34:12,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:34:12,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:34:12,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:34:12,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:34:12,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:34:12,925 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:34:12,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:34:12,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:34:12,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:34:12,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:34:12,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:34:12,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:34:12,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:34:12,926 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB 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 -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-11-27 20:34:13,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:34:13,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:34:13,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:34:13,272 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:34:13,272 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:34:13,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-27 20:34:16,259 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/data/568ce989f/dff73657bbc0423ebd311902d1744ff5/FLAG425e9eab2 [2024-11-27 20:34:16,558 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:34:16,559 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-27 20:34:16,573 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/data/568ce989f/dff73657bbc0423ebd311902d1744ff5/FLAG425e9eab2 [2024-11-27 20:34:16,848 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/data/568ce989f/dff73657bbc0423ebd311902d1744ff5 [2024-11-27 20:34:16,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:34:16,854 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:34:16,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:34:16,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:34:16,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:34:16,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:16,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea81908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16, skipping insertion in model container [2024-11-27 20:34:16,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:16,887 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:34:17,122 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3081,3094] [2024-11-27 20:34:17,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:34:17,144 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:34:17,166 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3081,3094] [2024-11-27 20:34:17,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:34:17,186 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:34:17,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17 WrapperNode [2024-11-27 20:34:17,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:34:17,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:34:17,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:34:17,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:34:17,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,204 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,235 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 168 [2024-11-27 20:34:17,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:34:17,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:34:17,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:34:17,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:34:17,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,249 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,283 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-27 20:34:17,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,290 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,291 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:34:17,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:34:17,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:34:17,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:34:17,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (1/1) ... [2024-11-27 20:34:17,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:34:17,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:17,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:34:17,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:34:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:34:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:34:17,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:34:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:34:17,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:34:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-27 20:34:17,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-27 20:34:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:34:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:34:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:34:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:34:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:34:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:34:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:34:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:34:17,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:34:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:34:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:34:17,384 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:34:17,502 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:34:17,505 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:34:17,966 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:34:17,966 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:34:18,353 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:34:18,355 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-27 20:34:18,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:34:18 BoogieIcfgContainer [2024-11-27 20:34:18,356 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:34:18,358 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:34:18,358 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:34:18,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:34:18,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:34:16" (1/3) ... [2024-11-27 20:34:18,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c46cbe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:34:18, skipping insertion in model container [2024-11-27 20:34:18,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:17" (2/3) ... [2024-11-27 20:34:18,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c46cbe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:34:18, skipping insertion in model container [2024-11-27 20:34:18,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:34:18" (3/3) ... [2024-11-27 20:34:18,369 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2024-11-27 20:34:18,386 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:34:18,387 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-multiply-verify.wvr.c that has 4 procedures, 33 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-27 20:34:18,387 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:34:18,468 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-27 20:34:18,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 91 flow [2024-11-27 20:34:18,560 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2024-11-27 20:34:18,563 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:34:18,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 3/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-27 20:34:18,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 91 flow [2024-11-27 20:34:18,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 80 flow [2024-11-27 20:34:18,587 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:34:18,599 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;@2ad6a8d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:34:18,600 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-27 20:34:18,613 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:34:18,613 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2024-11-27 20:34:18,613 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:34:18,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:18,614 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:18,614 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)] === [2024-11-27 20:34:18,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:18,621 INFO L85 PathProgramCache]: Analyzing trace with hash 5242404, now seen corresponding path program 1 times [2024-11-27 20:34:18,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:18,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679943847] [2024-11-27 20:34:18,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:18,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:19,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:19,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679943847] [2024-11-27 20:34:19,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679943847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:19,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:19,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:34:19,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089610757] [2024-11-27 20:34:19,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:19,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:34:19,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:19,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:34:19,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:34:19,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-27 20:34:19,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-27 20:34:19,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:19,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-27 20:34:19,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:19,499 INFO L124 PetriNetUnfolderBase]: 350/567 cut-off events. [2024-11-27 20:34:19,500 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-11-27 20:34:19,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 567 events. 350/567 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1996 event pairs, 118 based on Foata normal form. 9/564 useless extension candidates. Maximal degree in co-relation 1070. Up to 432 conditions per place. [2024-11-27 20:34:19,511 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 35 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-27 20:34:19,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 188 flow [2024-11-27 20:34:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:34:19,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:34:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-27 20:34:19,531 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-27 20:34:19,535 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 80 flow. Second operand 3 states and 66 transitions. [2024-11-27 20:34:19,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 188 flow [2024-11-27 20:34:19,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 172 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-27 20:34:19,548 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 87 flow [2024-11-27 20:34:19,551 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-11-27 20:34:19,554 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-11-27 20:34:19,555 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 87 flow [2024-11-27 20:34:19,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-27 20:34:19,555 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:19,555 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:19,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:34:19,555 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)] === [2024-11-27 20:34:19,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:19,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1818750812, now seen corresponding path program 2 times [2024-11-27 20:34:19,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:19,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435760082] [2024-11-27 20:34:19,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:19,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:19,624 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:34:19,624 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:20,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:20,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435760082] [2024-11-27 20:34:20,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435760082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:20,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:20,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:34:20,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584355666] [2024-11-27 20:34:20,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:20,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:20,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:20,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:20,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:34:20,034 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-27 20:34:20,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-27 20:34:20,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:20,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-27 20:34:20,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:20,297 INFO L124 PetriNetUnfolderBase]: 420/709 cut-off events. [2024-11-27 20:34:20,298 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-27 20:34:20,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 709 events. 420/709 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2734 event pairs, 316 based on Foata normal form. 26/715 useless extension candidates. Maximal degree in co-relation 578. Up to 547 conditions per place. [2024-11-27 20:34:20,306 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 26 selfloop transitions, 2 changer transitions 13/47 dead transitions. [2024-11-27 20:34:20,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 200 flow [2024-11-27 20:34:20,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:34:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-11-27 20:34:20,309 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-27 20:34:20,309 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 87 flow. Second operand 4 states and 77 transitions. [2024-11-27 20:34:20,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 200 flow [2024-11-27 20:34:20,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:20,313 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 100 flow [2024-11-27 20:34:20,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-27 20:34:20,314 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2024-11-27 20:34:20,315 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 100 flow [2024-11-27 20:34:20,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-27 20:34:20,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:20,316 INFO L206 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] [2024-11-27 20:34:20,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:34:20,316 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)] === [2024-11-27 20:34:20,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:20,317 INFO L85 PathProgramCache]: Analyzing trace with hash 438497604, now seen corresponding path program 1 times [2024-11-27 20:34:20,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:20,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510505305] [2024-11-27 20:34:20,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:20,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:20,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:20,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510505305] [2024-11-27 20:34:20,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510505305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:20,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:20,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:34:20,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602103167] [2024-11-27 20:34:20,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:20,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:20,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:20,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:20,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:20,467 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-27 20:34:20,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-27 20:34:20,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:20,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-27 20:34:20,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:20,632 INFO L124 PetriNetUnfolderBase]: 224/388 cut-off events. [2024-11-27 20:34:20,632 INFO L125 PetriNetUnfolderBase]: For 96/101 co-relation queries the response was YES. [2024-11-27 20:34:20,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 388 events. 224/388 cut-off events. For 96/101 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1293 event pairs, 56 based on Foata normal form. 29/405 useless extension candidates. Maximal degree in co-relation 864. Up to 146 conditions per place. [2024-11-27 20:34:20,639 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 40 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2024-11-27 20:34:20,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 228 flow [2024-11-27 20:34:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:20,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:34:20,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-11-27 20:34:20,641 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2024-11-27 20:34:20,641 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 100 flow. Second operand 4 states and 81 transitions. [2024-11-27 20:34:20,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 228 flow [2024-11-27 20:34:20,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 220 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-27 20:34:20,645 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 108 flow [2024-11-27 20:34:20,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-27 20:34:20,647 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-11-27 20:34:20,647 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 108 flow [2024-11-27 20:34:20,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-27 20:34:20,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:20,648 INFO L206 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] [2024-11-27 20:34:20,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:34:20,648 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)] === [2024-11-27 20:34:20,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:20,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1303701922, now seen corresponding path program 2 times [2024-11-27 20:34:20,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:20,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079434606] [2024-11-27 20:34:20,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:20,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:20,778 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:34:20,778 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:21,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:21,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079434606] [2024-11-27 20:34:21,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079434606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:21,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:21,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:34:21,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340128169] [2024-11-27 20:34:21,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:21,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:34:21,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:21,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:34:21,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:34:21,630 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:21,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 108 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-27 20:34:21,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:21,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:21,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:22,271 INFO L124 PetriNetUnfolderBase]: 548/922 cut-off events. [2024-11-27 20:34:22,272 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2024-11-27 20:34:22,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 922 events. 548/922 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4163 event pairs, 131 based on Foata normal form. 1/918 useless extension candidates. Maximal degree in co-relation 2157. Up to 341 conditions per place. [2024-11-27 20:34:22,278 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 62 selfloop transitions, 14 changer transitions 17/97 dead transitions. [2024-11-27 20:34:22,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 97 transitions, 467 flow [2024-11-27 20:34:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:34:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:34:22,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-11-27 20:34:22,280 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5321428571428571 [2024-11-27 20:34:22,281 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 108 flow. Second operand 8 states and 149 transitions. [2024-11-27 20:34:22,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 97 transitions, 467 flow [2024-11-27 20:34:22,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 97 transitions, 447 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-27 20:34:22,285 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 207 flow [2024-11-27 20:34:22,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=207, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-11-27 20:34:22,286 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2024-11-27 20:34:22,286 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 207 flow [2024-11-27 20:34:22,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-27 20:34:22,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:22,286 INFO L206 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] [2024-11-27 20:34:22,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:34:22,287 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)] === [2024-11-27 20:34:22,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:22,287 INFO L85 PathProgramCache]: Analyzing trace with hash -191056568, now seen corresponding path program 3 times [2024-11-27 20:34:22,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:22,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606944168] [2024-11-27 20:34:22,288 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:34:22,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:22,335 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:34:22,335 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:23,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:23,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606944168] [2024-11-27 20:34:23,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606944168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:23,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:23,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:34:23,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329561709] [2024-11-27 20:34:23,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:23,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:34:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:23,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:34:23,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:34:23,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:23,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 207 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-27 20:34:23,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:23,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:23,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:23,695 INFO L124 PetriNetUnfolderBase]: 742/1252 cut-off events. [2024-11-27 20:34:23,696 INFO L125 PetriNetUnfolderBase]: For 1227/1234 co-relation queries the response was YES. [2024-11-27 20:34:23,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3596 conditions, 1252 events. 742/1252 cut-off events. For 1227/1234 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6102 event pairs, 185 based on Foata normal form. 6/1256 useless extension candidates. Maximal degree in co-relation 3580. Up to 405 conditions per place. [2024-11-27 20:34:23,706 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 64 selfloop transitions, 21 changer transitions 17/106 dead transitions. [2024-11-27 20:34:23,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 106 transitions, 627 flow [2024-11-27 20:34:23,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:34:23,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:34:23,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-11-27 20:34:23,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-27 20:34:23,708 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 207 flow. Second operand 8 states and 148 transitions. [2024-11-27 20:34:23,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 106 transitions, 627 flow [2024-11-27 20:34:23,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 599 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-27 20:34:23,716 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 355 flow [2024-11-27 20:34:23,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=355, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2024-11-27 20:34:23,717 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-11-27 20:34:23,717 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 355 flow [2024-11-27 20:34:23,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-27 20:34:23,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:23,718 INFO L206 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] [2024-11-27 20:34:23,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:34:23,718 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)] === [2024-11-27 20:34:23,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:23,719 INFO L85 PathProgramCache]: Analyzing trace with hash -155533568, now seen corresponding path program 4 times [2024-11-27 20:34:23,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:23,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112153760] [2024-11-27 20:34:23,719 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:34:23,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:23,739 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:34:23,739 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:23,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:23,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112153760] [2024-11-27 20:34:23,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112153760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:23,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691466124] [2024-11-27 20:34:23,958 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:34:23,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:23,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:23,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:23,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:34:24,078 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:34:24,078 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:24,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:34:24,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:24,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:24,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691466124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:24,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:24,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-27 20:34:24,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077416448] [2024-11-27 20:34:24,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:24,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:34:24,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:24,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:34:24,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:34:24,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-27 20:34:24,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 355 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 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) [2024-11-27 20:34:24,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:24,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-27 20:34:24,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:24,776 INFO L124 PetriNetUnfolderBase]: 1161/2011 cut-off events. [2024-11-27 20:34:24,776 INFO L125 PetriNetUnfolderBase]: For 2945/2947 co-relation queries the response was YES. [2024-11-27 20:34:24,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6278 conditions, 2011 events. 1161/2011 cut-off events. For 2945/2947 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11497 event pairs, 786 based on Foata normal form. 11/1983 useless extension candidates. Maximal degree in co-relation 6258. Up to 892 conditions per place. [2024-11-27 20:34:24,792 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 40 selfloop transitions, 3 changer transitions 35/93 dead transitions. [2024-11-27 20:34:24,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 740 flow [2024-11-27 20:34:24,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:24,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-11-27 20:34:24,794 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-11-27 20:34:24,794 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 355 flow. Second operand 5 states and 92 transitions. [2024-11-27 20:34:24,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 740 flow [2024-11-27 20:34:24,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 93 transitions, 728 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-27 20:34:24,814 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 361 flow [2024-11-27 20:34:24,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2024-11-27 20:34:24,814 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2024-11-27 20:34:24,815 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 361 flow [2024-11-27 20:34:24,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 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) [2024-11-27 20:34:24,815 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:24,815 INFO L206 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] [2024-11-27 20:34:24,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:34:25,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:25,020 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)] === [2024-11-27 20:34:25,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:25,021 INFO L85 PathProgramCache]: Analyzing trace with hash 299748108, now seen corresponding path program 5 times [2024-11-27 20:34:25,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:25,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094486301] [2024-11-27 20:34:25,022 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:34:25,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:25,090 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:25,091 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:27,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:27,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094486301] [2024-11-27 20:34:27,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094486301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:27,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551924900] [2024-11-27 20:34:27,145 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:34:27,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:27,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:27,149 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:27,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:34:27,250 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:27,250 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:27,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 20:34:27,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:27,377 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 [2024-11-27 20:34:28,228 INFO L349 Elim1Store]: treesize reduction 34, result has 17.1 percent of original size [2024-11-27 20:34:28,228 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 71 treesize of output 41 [2024-11-27 20:34:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:28,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:29,938 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 81 treesize of output 73 [2024-11-27 20:34:30,029 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-27 20:34:30,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 140 treesize of output 138 [2024-11-27 20:34:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:32,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551924900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:32,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:32,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-11-27 20:34:32,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258815842] [2024-11-27 20:34:32,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:32,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 20:34:32,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:32,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 20:34:32,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2024-11-27 20:34:32,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:32,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 361 flow. Second operand has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 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) [2024-11-27 20:34:32,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:32,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:32,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:36,412 INFO L124 PetriNetUnfolderBase]: 1783/3031 cut-off events. [2024-11-27 20:34:36,413 INFO L125 PetriNetUnfolderBase]: For 4461/4461 co-relation queries the response was YES. [2024-11-27 20:34:36,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9386 conditions, 3031 events. 1783/3031 cut-off events. For 4461/4461 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 17771 event pairs, 574 based on Foata normal form. 1/3028 useless extension candidates. Maximal degree in co-relation 9355. Up to 1070 conditions per place. [2024-11-27 20:34:36,436 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 156 selfloop transitions, 39 changer transitions 22/221 dead transitions. [2024-11-27 20:34:36,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 221 transitions, 1487 flow [2024-11-27 20:34:36,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:34:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-27 20:34:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 307 transitions. [2024-11-27 20:34:36,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4616541353383459 [2024-11-27 20:34:36,441 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 361 flow. Second operand 19 states and 307 transitions. [2024-11-27 20:34:36,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 221 transitions, 1487 flow [2024-11-27 20:34:36,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 221 transitions, 1465 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-27 20:34:36,463 INFO L231 Difference]: Finished difference. Result has 83 places, 95 transitions, 848 flow [2024-11-27 20:34:36,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=848, PETRI_PLACES=83, PETRI_TRANSITIONS=95} [2024-11-27 20:34:36,467 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 45 predicate places. [2024-11-27 20:34:36,469 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 95 transitions, 848 flow [2024-11-27 20:34:36,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 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) [2024-11-27 20:34:36,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:36,469 INFO L206 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] [2024-11-27 20:34:36,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:34:36,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:36,670 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)] === [2024-11-27 20:34:36,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:36,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1722166350, now seen corresponding path program 6 times [2024-11-27 20:34:36,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:36,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949936391] [2024-11-27 20:34:36,672 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:34:36,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:36,718 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 20:34:36,718 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:37,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:37,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949936391] [2024-11-27 20:34:37,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949936391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:37,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:37,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:34:37,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847995844] [2024-11-27 20:34:37,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:37,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:34:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:37,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:34:37,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:34:37,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:37,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 95 transitions, 848 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-27 20:34:37,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:37,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:37,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:37,915 INFO L124 PetriNetUnfolderBase]: 1902/3259 cut-off events. [2024-11-27 20:34:37,915 INFO L125 PetriNetUnfolderBase]: For 8147/8147 co-relation queries the response was YES. [2024-11-27 20:34:37,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11231 conditions, 3259 events. 1902/3259 cut-off events. For 8147/8147 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 19674 event pairs, 425 based on Foata normal form. 2/3256 useless extension candidates. Maximal degree in co-relation 11194. Up to 1422 conditions per place. [2024-11-27 20:34:37,946 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 92 selfloop transitions, 37 changer transitions 19/152 dead transitions. [2024-11-27 20:34:37,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 152 transitions, 1345 flow [2024-11-27 20:34:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:34:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:34:37,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-11-27 20:34:37,949 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-27 20:34:37,949 INFO L175 Difference]: Start difference. First operand has 83 places, 95 transitions, 848 flow. Second operand 8 states and 152 transitions. [2024-11-27 20:34:37,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 152 transitions, 1345 flow [2024-11-27 20:34:37,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 152 transitions, 1279 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-11-27 20:34:37,998 INFO L231 Difference]: Finished difference. Result has 86 places, 97 transitions, 900 flow [2024-11-27 20:34:37,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=900, PETRI_PLACES=86, PETRI_TRANSITIONS=97} [2024-11-27 20:34:38,001 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 48 predicate places. [2024-11-27 20:34:38,001 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 97 transitions, 900 flow [2024-11-27 20:34:38,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-27 20:34:38,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:38,003 INFO L206 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] [2024-11-27 20:34:38,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:34:38,003 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)] === [2024-11-27 20:34:38,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash -675556986, now seen corresponding path program 7 times [2024-11-27 20:34:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373954198] [2024-11-27 20:34:38,004 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:34:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:39,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:39,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373954198] [2024-11-27 20:34:39,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373954198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:39,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176430625] [2024-11-27 20:34:39,582 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:34:39,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:39,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:39,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:39,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:34:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:39,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-27 20:34:39,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:39,783 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 [2024-11-27 20:34:40,268 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-27 20:34:40,269 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 65 treesize of output 34 [2024-11-27 20:34:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:40,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:41,390 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 81 treesize of output 73 [2024-11-27 20:34:41,469 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-27 20:34:41,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 140 treesize of output 138 [2024-11-27 20:34:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:43,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176430625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:43,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:43,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2024-11-27 20:34:43,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978027566] [2024-11-27 20:34:43,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:43,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 20:34:43,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:43,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 20:34:43,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2024-11-27 20:34:44,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:44,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 97 transitions, 900 flow. Second operand has 29 states, 29 states have (on average 9.448275862068966) internal successors, (274), 29 states have internal predecessors, (274), 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) [2024-11-27 20:34:44,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:44,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:44,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:47,831 INFO L124 PetriNetUnfolderBase]: 2252/3926 cut-off events. [2024-11-27 20:34:47,832 INFO L125 PetriNetUnfolderBase]: For 12022/12045 co-relation queries the response was YES. [2024-11-27 20:34:47,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13447 conditions, 3926 events. 2252/3926 cut-off events. For 12022/12045 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 24884 event pairs, 788 based on Foata normal form. 22/3946 useless extension candidates. Maximal degree in co-relation 13400. Up to 1201 conditions per place. [2024-11-27 20:34:47,875 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 163 selfloop transitions, 51 changer transitions 17/235 dead transitions. [2024-11-27 20:34:47,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 235 transitions, 1919 flow [2024-11-27 20:34:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:34:47,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 20:34:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 302 transitions. [2024-11-27 20:34:47,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4793650793650794 [2024-11-27 20:34:47,878 INFO L175 Difference]: Start difference. First operand has 86 places, 97 transitions, 900 flow. Second operand 18 states and 302 transitions. [2024-11-27 20:34:47,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 235 transitions, 1919 flow [2024-11-27 20:34:47,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 235 transitions, 1831 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-27 20:34:47,931 INFO L231 Difference]: Finished difference. Result has 106 places, 120 transitions, 1251 flow [2024-11-27 20:34:47,932 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1251, PETRI_PLACES=106, PETRI_TRANSITIONS=120} [2024-11-27 20:34:47,933 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 68 predicate places. [2024-11-27 20:34:47,934 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 120 transitions, 1251 flow [2024-11-27 20:34:47,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.448275862068966) internal successors, (274), 29 states have internal predecessors, (274), 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) [2024-11-27 20:34:47,935 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:47,935 INFO L206 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] [2024-11-27 20:34:47,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:34:48,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-27 20:34:48,136 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)] === [2024-11-27 20:34:48,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:48,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2039714940, now seen corresponding path program 8 times [2024-11-27 20:34:48,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:48,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667163970] [2024-11-27 20:34:48,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:48,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:48,189 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:34:48,190 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:48,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667163970] [2024-11-27 20:34:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667163970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:48,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:48,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:34:48,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028216953] [2024-11-27 20:34:48,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:48,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:34:48,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:48,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:34:48,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:34:48,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:48,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 120 transitions, 1251 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-27 20:34:48,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:48,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:48,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:49,426 INFO L124 PetriNetUnfolderBase]: 2317/4057 cut-off events. [2024-11-27 20:34:49,427 INFO L125 PetriNetUnfolderBase]: For 15655/15709 co-relation queries the response was YES. [2024-11-27 20:34:49,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14775 conditions, 4057 events. 2317/4057 cut-off events. For 15655/15709 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 25756 event pairs, 636 based on Foata normal form. 36/4090 useless extension candidates. Maximal degree in co-relation 14719. Up to 2058 conditions per place. [2024-11-27 20:34:49,449 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 107 selfloop transitions, 41 changer transitions 19/171 dead transitions. [2024-11-27 20:34:49,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 171 transitions, 1800 flow [2024-11-27 20:34:49,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:34:49,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:34:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-11-27 20:34:49,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-11-27 20:34:49,451 INFO L175 Difference]: Start difference. First operand has 106 places, 120 transitions, 1251 flow. Second operand 8 states and 141 transitions. [2024-11-27 20:34:49,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 171 transitions, 1800 flow [2024-11-27 20:34:49,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 171 transitions, 1749 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-11-27 20:34:49,533 INFO L231 Difference]: Finished difference. Result has 110 places, 123 transitions, 1343 flow [2024-11-27 20:34:49,533 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1343, PETRI_PLACES=110, PETRI_TRANSITIONS=123} [2024-11-27 20:34:49,534 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 72 predicate places. [2024-11-27 20:34:49,534 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 123 transitions, 1343 flow [2024-11-27 20:34:49,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-27 20:34:49,534 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:49,534 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:49,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:34:49,534 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)] === [2024-11-27 20:34:49,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:49,535 INFO L85 PathProgramCache]: Analyzing trace with hash -852449538, now seen corresponding path program 9 times [2024-11-27 20:34:49,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:49,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187215421] [2024-11-27 20:34:49,535 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:34:49,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:49,572 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:34:49,573 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:34:49,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:49,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187215421] [2024-11-27 20:34:49,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187215421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:49,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:49,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:34:49,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667257261] [2024-11-27 20:34:49,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:49,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:34:49,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:49,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:34:49,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:34:49,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:49,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 123 transitions, 1343 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-27 20:34:49,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:49,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:49,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:50,852 INFO L124 PetriNetUnfolderBase]: 2287/3993 cut-off events. [2024-11-27 20:34:50,852 INFO L125 PetriNetUnfolderBase]: For 18353/18368 co-relation queries the response was YES. [2024-11-27 20:34:50,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15033 conditions, 3993 events. 2287/3993 cut-off events. For 18353/18368 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 25306 event pairs, 584 based on Foata normal form. 13/4003 useless extension candidates. Maximal degree in co-relation 14974. Up to 2082 conditions per place. [2024-11-27 20:34:50,884 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 118 selfloop transitions, 39 changer transitions 17/178 dead transitions. [2024-11-27 20:34:50,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 178 transitions, 1899 flow [2024-11-27 20:34:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:34:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:34:50,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-11-27 20:34:50,885 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-27 20:34:50,885 INFO L175 Difference]: Start difference. First operand has 110 places, 123 transitions, 1343 flow. Second operand 8 states and 147 transitions. [2024-11-27 20:34:50,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 178 transitions, 1899 flow [2024-11-27 20:34:50,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 178 transitions, 1813 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-27 20:34:50,990 INFO L231 Difference]: Finished difference. Result has 114 places, 125 transitions, 1388 flow [2024-11-27 20:34:50,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1388, PETRI_PLACES=114, PETRI_TRANSITIONS=125} [2024-11-27 20:34:50,991 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 76 predicate places. [2024-11-27 20:34:50,991 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 125 transitions, 1388 flow [2024-11-27 20:34:50,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-27 20:34:50,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:50,991 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:50,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:34:50,992 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)] === [2024-11-27 20:34:50,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:50,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2141164148, now seen corresponding path program 10 times [2024-11-27 20:34:50,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:50,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222445236] [2024-11-27 20:34:50,993 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:34:50,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:51,054 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:34:51,054 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:52,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:52,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222445236] [2024-11-27 20:34:52,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222445236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:52,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824693064] [2024-11-27 20:34:52,400 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:34:52,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:52,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:52,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:52,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:34:52,502 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:34:52,502 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:52,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 20:34:52,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:52,789 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:53,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:34:53,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 58 treesize of output 24 [2024-11-27 20:34:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:34:53,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824693064] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:53,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:34:53,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 9] total 26 [2024-11-27 20:34:53,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788141655] [2024-11-27 20:34:53,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:53,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:34:53,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:53,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:34:53,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2024-11-27 20:34:53,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:53,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 125 transitions, 1388 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-27 20:34:53,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:53,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:53,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:54,309 INFO L124 PetriNetUnfolderBase]: 2683/4770 cut-off events. [2024-11-27 20:34:54,310 INFO L125 PetriNetUnfolderBase]: For 20467/20517 co-relation queries the response was YES. [2024-11-27 20:34:54,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17319 conditions, 4770 events. 2683/4770 cut-off events. For 20467/20517 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 31182 event pairs, 751 based on Foata normal form. 48/4812 useless extension candidates. Maximal degree in co-relation 17230. Up to 1421 conditions per place. [2024-11-27 20:34:54,356 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 119 selfloop transitions, 66 changer transitions 23/212 dead transitions. [2024-11-27 20:34:54,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 212 transitions, 2155 flow [2024-11-27 20:34:54,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:34:54,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:34:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-11-27 20:34:54,358 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-27 20:34:54,358 INFO L175 Difference]: Start difference. First operand has 114 places, 125 transitions, 1388 flow. Second operand 10 states and 190 transitions. [2024-11-27 20:34:54,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 212 transitions, 2155 flow [2024-11-27 20:34:54,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 212 transitions, 2066 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-27 20:34:54,464 INFO L231 Difference]: Finished difference. Result has 121 places, 130 transitions, 1551 flow [2024-11-27 20:34:54,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1551, PETRI_PLACES=121, PETRI_TRANSITIONS=130} [2024-11-27 20:34:54,465 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 83 predicate places. [2024-11-27 20:34:54,465 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 130 transitions, 1551 flow [2024-11-27 20:34:54,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-27 20:34:54,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:54,466 INFO L206 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] [2024-11-27 20:34:54,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:34:54,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:34:54,666 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)] === [2024-11-27 20:34:54,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:54,667 INFO L85 PathProgramCache]: Analyzing trace with hash -909854675, now seen corresponding path program 1 times [2024-11-27 20:34:54,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:54,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602087687] [2024-11-27 20:34:54,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:54,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:54,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602087687] [2024-11-27 20:34:54,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602087687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:54,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:54,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:34:54,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762047676] [2024-11-27 20:34:54,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:54,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:34:54,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:54,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:34:54,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:34:54,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:54,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 130 transitions, 1551 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-11-27 20:34:54,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:54,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:54,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:55,753 INFO L124 PetriNetUnfolderBase]: 3400/5968 cut-off events. [2024-11-27 20:34:55,754 INFO L125 PetriNetUnfolderBase]: For 26902/26917 co-relation queries the response was YES. [2024-11-27 20:34:55,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21476 conditions, 5968 events. 3400/5968 cut-off events. For 26902/26917 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 39986 event pairs, 647 based on Foata normal form. 9/5429 useless extension candidates. Maximal degree in co-relation 21388. Up to 3577 conditions per place. [2024-11-27 20:34:55,834 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 144 selfloop transitions, 29 changer transitions 4/213 dead transitions. [2024-11-27 20:34:55,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 213 transitions, 2657 flow [2024-11-27 20:34:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:34:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 20:34:55,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-11-27 20:34:55,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-11-27 20:34:55,837 INFO L175 Difference]: Start difference. First operand has 121 places, 130 transitions, 1551 flow. Second operand 7 states and 135 transitions. [2024-11-27 20:34:55,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 213 transitions, 2657 flow [2024-11-27 20:34:56,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 213 transitions, 2486 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-11-27 20:34:56,012 INFO L231 Difference]: Finished difference. Result has 121 places, 145 transitions, 1672 flow [2024-11-27 20:34:56,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1672, PETRI_PLACES=121, PETRI_TRANSITIONS=145} [2024-11-27 20:34:56,013 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 83 predicate places. [2024-11-27 20:34:56,013 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 145 transitions, 1672 flow [2024-11-27 20:34:56,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-11-27 20:34:56,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:56,013 INFO L206 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] [2024-11-27 20:34:56,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:34:56,013 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)] === [2024-11-27 20:34:56,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:56,014 INFO L85 PathProgramCache]: Analyzing trace with hash 79865657, now seen corresponding path program 2 times [2024-11-27 20:34:56,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:56,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295911305] [2024-11-27 20:34:56,014 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:56,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:56,028 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:34:56,028 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:56,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:56,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295911305] [2024-11-27 20:34:56,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295911305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:56,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:56,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:34:56,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239949859] [2024-11-27 20:34:56,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:56,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:56,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:56,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:56,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:34:56,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:56,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 145 transitions, 1672 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-27 20:34:56,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:56,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:56,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:56,986 INFO L124 PetriNetUnfolderBase]: 3395/5986 cut-off events. [2024-11-27 20:34:56,986 INFO L125 PetriNetUnfolderBase]: For 27464/27499 co-relation queries the response was YES. [2024-11-27 20:34:57,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23910 conditions, 5986 events. 3395/5986 cut-off events. For 27464/27499 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 40406 event pairs, 2087 based on Foata normal form. 49/5977 useless extension candidates. Maximal degree in co-relation 22782. Up to 4577 conditions per place. [2024-11-27 20:34:57,210 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 118 selfloop transitions, 27 changer transitions 5/186 dead transitions. [2024-11-27 20:34:57,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 186 transitions, 2309 flow [2024-11-27 20:34:57,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-11-27 20:34:57,212 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-11-27 20:34:57,212 INFO L175 Difference]: Start difference. First operand has 121 places, 145 transitions, 1672 flow. Second operand 5 states and 93 transitions. [2024-11-27 20:34:57,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 186 transitions, 2309 flow [2024-11-27 20:34:57,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 186 transitions, 2309 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:34:57,365 INFO L231 Difference]: Finished difference. Result has 128 places, 152 transitions, 1832 flow [2024-11-27 20:34:57,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1832, PETRI_PLACES=128, PETRI_TRANSITIONS=152} [2024-11-27 20:34:57,366 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 90 predicate places. [2024-11-27 20:34:57,366 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 152 transitions, 1832 flow [2024-11-27 20:34:57,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-27 20:34:57,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:57,366 INFO L206 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] [2024-11-27 20:34:57,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:34:57,367 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:34:57,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1002500902, now seen corresponding path program 1 times [2024-11-27 20:34:57,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:57,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187166694] [2024-11-27 20:34:57,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:57,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:57,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:57,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187166694] [2024-11-27 20:34:57,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187166694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:57,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:57,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:34:57,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564163760] [2024-11-27 20:34:57,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:57,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:57,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:57,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:57,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:34:57,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:57,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 152 transitions, 1832 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-27 20:34:57,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:57,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:57,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:58,482 INFO L124 PetriNetUnfolderBase]: 2844/5058 cut-off events. [2024-11-27 20:34:58,482 INFO L125 PetriNetUnfolderBase]: For 27133/27177 co-relation queries the response was YES. [2024-11-27 20:34:58,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21557 conditions, 5058 events. 2844/5058 cut-off events. For 27133/27177 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 33102 event pairs, 1400 based on Foata normal form. 104/5108 useless extension candidates. Maximal degree in co-relation 21023. Up to 3173 conditions per place. [2024-11-27 20:34:58,534 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 94 selfloop transitions, 16 changer transitions 35/176 dead transitions. [2024-11-27 20:34:58,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 176 transitions, 2262 flow [2024-11-27 20:34:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:58,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:58,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-11-27 20:34:58,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5542857142857143 [2024-11-27 20:34:58,537 INFO L175 Difference]: Start difference. First operand has 128 places, 152 transitions, 1832 flow. Second operand 5 states and 97 transitions. [2024-11-27 20:34:58,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 176 transitions, 2262 flow [2024-11-27 20:34:58,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 176 transitions, 2186 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-11-27 20:34:58,673 INFO L231 Difference]: Finished difference. Result has 126 places, 127 transitions, 1453 flow [2024-11-27 20:34:58,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1453, PETRI_PLACES=126, PETRI_TRANSITIONS=127} [2024-11-27 20:34:58,674 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 88 predicate places. [2024-11-27 20:34:58,674 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 127 transitions, 1453 flow [2024-11-27 20:34:58,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-27 20:34:58,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:58,675 INFO L206 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] [2024-11-27 20:34:58,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:34:58,675 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:34:58,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:58,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1919165639, now seen corresponding path program 3 times [2024-11-27 20:34:58,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:58,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165631650] [2024-11-27 20:34:58,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:34:58,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:58,704 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:34:58,704 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:58,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:58,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165631650] [2024-11-27 20:34:58,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165631650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:58,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:58,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:34:58,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332781985] [2024-11-27 20:34:58,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:58,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:58,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:58,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:58,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:58,766 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:58,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 127 transitions, 1453 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-27 20:34:58,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:58,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:58,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:59,361 INFO L124 PetriNetUnfolderBase]: 2493/4439 cut-off events. [2024-11-27 20:34:59,361 INFO L125 PetriNetUnfolderBase]: For 23408/23443 co-relation queries the response was YES. [2024-11-27 20:34:59,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18557 conditions, 4439 events. 2493/4439 cut-off events. For 23408/23443 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 28169 event pairs, 1369 based on Foata normal form. 80/4458 useless extension candidates. Maximal degree in co-relation 17774. Up to 2989 conditions per place. [2024-11-27 20:34:59,399 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 100 selfloop transitions, 23 changer transitions 3/155 dead transitions. [2024-11-27 20:34:59,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 155 transitions, 1943 flow [2024-11-27 20:34:59,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:59,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:34:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-11-27 20:34:59,400 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-27 20:34:59,400 INFO L175 Difference]: Start difference. First operand has 126 places, 127 transitions, 1453 flow. Second operand 4 states and 80 transitions. [2024-11-27 20:34:59,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 155 transitions, 1943 flow [2024-11-27 20:34:59,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 155 transitions, 1829 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-11-27 20:34:59,501 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 1374 flow [2024-11-27 20:34:59,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1374, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2024-11-27 20:34:59,502 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 80 predicate places. [2024-11-27 20:34:59,502 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 1374 flow [2024-11-27 20:34:59,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-27 20:34:59,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:59,502 INFO L206 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] [2024-11-27 20:34:59,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:34:59,503 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:34:59,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:59,503 INFO L85 PathProgramCache]: Analyzing trace with hash -747559059, now seen corresponding path program 4 times [2024-11-27 20:34:59,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:59,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069774116] [2024-11-27 20:34:59,504 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:34:59,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:59,522 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:34:59,522 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:59,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:59,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069774116] [2024-11-27 20:34:59,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069774116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:59,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939763040] [2024-11-27 20:34:59,697 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:34:59,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:59,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:59,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:59,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:34:59,798 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:34:59,798 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:59,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:34:59,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:59,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:59,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:34:59,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939763040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:59,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:34:59,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-27 20:34:59,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058741664] [2024-11-27 20:34:59,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:59,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:59,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:59,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:59,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:34:59,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:34:59,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 1374 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-27 20:34:59,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:59,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:34:59,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:35:00,521 INFO L124 PetriNetUnfolderBase]: 2480/4426 cut-off events. [2024-11-27 20:35:00,521 INFO L125 PetriNetUnfolderBase]: For 23078/23111 co-relation queries the response was YES. [2024-11-27 20:35:00,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19117 conditions, 4426 events. 2480/4426 cut-off events. For 23078/23111 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 28106 event pairs, 1360 based on Foata normal form. 44/4417 useless extension candidates. Maximal degree in co-relation 18274. Up to 2939 conditions per place. [2024-11-27 20:35:00,567 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 95 selfloop transitions, 26 changer transitions 7/157 dead transitions. [2024-11-27 20:35:00,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 157 transitions, 1921 flow [2024-11-27 20:35:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:35:00,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:35:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-11-27 20:35:00,568 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5085714285714286 [2024-11-27 20:35:00,568 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 1374 flow. Second operand 5 states and 89 transitions. [2024-11-27 20:35:00,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 157 transitions, 1921 flow [2024-11-27 20:35:00,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 157 transitions, 1895 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-27 20:35:00,669 INFO L231 Difference]: Finished difference. Result has 120 places, 130 transitions, 1537 flow [2024-11-27 20:35:00,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1537, PETRI_PLACES=120, PETRI_TRANSITIONS=130} [2024-11-27 20:35:00,671 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 82 predicate places. [2024-11-27 20:35:00,671 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 130 transitions, 1537 flow [2024-11-27 20:35:00,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-27 20:35:00,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:35:00,672 INFO L206 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] [2024-11-27 20:35:00,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:35:00,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:35:00,877 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:35:00,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:00,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1926444447, now seen corresponding path program 5 times [2024-11-27 20:35:00,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:00,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020661628] [2024-11-27 20:35:00,878 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:35:00,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:00,899 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:35:00,899 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:35:01,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:01,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020661628] [2024-11-27 20:35:01,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020661628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:35:01,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:35:01,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:35:01,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456980123] [2024-11-27 20:35:01,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:35:01,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:35:01,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:01,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:35:01,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:35:01,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:35:01,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 130 transitions, 1537 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-27 20:35:01,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:35:01,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:35:01,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:35:01,727 INFO L124 PetriNetUnfolderBase]: 1902/3386 cut-off events. [2024-11-27 20:35:01,727 INFO L125 PetriNetUnfolderBase]: For 21812/21845 co-relation queries the response was YES. [2024-11-27 20:35:01,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15665 conditions, 3386 events. 1902/3386 cut-off events. For 21812/21845 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20134 event pairs, 831 based on Foata normal form. 60/3397 useless extension candidates. Maximal degree in co-relation 15138. Up to 1886 conditions per place. [2024-11-27 20:35:01,757 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 79 selfloop transitions, 18 changer transitions 13/134 dead transitions. [2024-11-27 20:35:01,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 134 transitions, 1709 flow [2024-11-27 20:35:01,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:35:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:35:01,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-11-27 20:35:01,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-27 20:35:01,758 INFO L175 Difference]: Start difference. First operand has 120 places, 130 transitions, 1537 flow. Second operand 4 states and 75 transitions. [2024-11-27 20:35:01,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 134 transitions, 1709 flow [2024-11-27 20:35:01,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 134 transitions, 1654 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-11-27 20:35:01,825 INFO L231 Difference]: Finished difference. Result has 116 places, 110 transitions, 1246 flow [2024-11-27 20:35:01,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1246, PETRI_PLACES=116, PETRI_TRANSITIONS=110} [2024-11-27 20:35:01,826 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 78 predicate places. [2024-11-27 20:35:01,826 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 110 transitions, 1246 flow [2024-11-27 20:35:01,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-27 20:35:01,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:35:01,826 INFO L206 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] [2024-11-27 20:35:01,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:35:01,826 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:35:01,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1144143049, now seen corresponding path program 1 times [2024-11-27 20:35:01,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:01,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319720764] [2024-11-27 20:35:01,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:35:01,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:35:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:35:04,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:04,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319720764] [2024-11-27 20:35:04,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319720764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:04,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18389138] [2024-11-27 20:35:04,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:35:04,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:04,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:35:04,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:35:04,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:35:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:35:05,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 20:35:05,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:35:05,087 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 15 treesize of output 1 [2024-11-27 20:35:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:35:05,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:35:33,336 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 81 treesize of output 73 [2024-11-27 20:35:33,512 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-27 20:35:33,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 174 treesize of output 160 [2024-11-27 20:35:38,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:35:38,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18389138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:35:38,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:35:38,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-27 20:35:38,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037647486] [2024-11-27 20:35:38,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:35:38,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-27 20:35:38,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:38,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-27 20:35:38,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1116, Unknown=5, NotChecked=0, Total=1332 [2024-11-27 20:35:38,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:35:38,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 110 transitions, 1246 flow. Second operand has 37 states, 37 states have (on average 9.27027027027027) internal successors, (343), 37 states have internal predecessors, (343), 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) [2024-11-27 20:35:38,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:35:38,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:35:38,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:35:49,368 INFO L124 PetriNetUnfolderBase]: 2540/4429 cut-off events. [2024-11-27 20:35:49,369 INFO L125 PetriNetUnfolderBase]: For 26688/26827 co-relation queries the response was YES. [2024-11-27 20:35:49,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20369 conditions, 4429 events. 2540/4429 cut-off events. For 26688/26827 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 27121 event pairs, 871 based on Foata normal form. 14/4380 useless extension candidates. Maximal degree in co-relation 19395. Up to 1323 conditions per place. [2024-11-27 20:35:49,408 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 197 selfloop transitions, 52 changer transitions 44/303 dead transitions. [2024-11-27 20:35:49,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 303 transitions, 2992 flow [2024-11-27 20:35:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:35:49,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-27 20:35:49,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 398 transitions. [2024-11-27 20:35:49,410 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45485714285714285 [2024-11-27 20:35:49,410 INFO L175 Difference]: Start difference. First operand has 116 places, 110 transitions, 1246 flow. Second operand 25 states and 398 transitions. [2024-11-27 20:35:49,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 303 transitions, 2992 flow [2024-11-27 20:35:49,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 303 transitions, 2896 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-27 20:35:49,480 INFO L231 Difference]: Finished difference. Result has 142 places, 133 transitions, 1615 flow [2024-11-27 20:35:49,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1615, PETRI_PLACES=142, PETRI_TRANSITIONS=133} [2024-11-27 20:35:49,481 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2024-11-27 20:35:49,481 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 133 transitions, 1615 flow [2024-11-27 20:35:49,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 9.27027027027027) internal successors, (343), 37 states have internal predecessors, (343), 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) [2024-11-27 20:35:49,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:35:49,481 INFO L206 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] [2024-11-27 20:35:49,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:35:49,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:49,686 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:35:49,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:49,687 INFO L85 PathProgramCache]: Analyzing trace with hash 655002905, now seen corresponding path program 2 times [2024-11-27 20:35:49,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:49,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025913695] [2024-11-27 20:35:49,687 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:35:49,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:49,725 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:35:49,726 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:35:51,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:51,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025913695] [2024-11-27 20:35:51,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025913695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:51,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520685417] [2024-11-27 20:35:51,478 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:35:51,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:51,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:35:51,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:35:51,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:35:51,571 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:35:51,572 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:51,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 20:35:51,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:35:51,709 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 [2024-11-27 20:35:52,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:35:52,847 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:35:55,948 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 77 treesize of output 69 [2024-11-27 20:35:56,109 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-27 20:35:56,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 157 treesize of output 143 [2024-11-27 20:35:58,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:35:58,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520685417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:35:58,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:35:58,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-27 20:35:58,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919340661] [2024-11-27 20:35:58,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:35:58,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 20:35:58,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:58,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 20:35:58,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1209, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 20:35:58,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:35:58,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 133 transitions, 1615 flow. Second operand has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:35:58,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:35:58,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:35:58,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:36:07,235 INFO L124 PetriNetUnfolderBase]: 3344/5780 cut-off events. [2024-11-27 20:36:07,236 INFO L125 PetriNetUnfolderBase]: For 43130/43282 co-relation queries the response was YES. [2024-11-27 20:36:07,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28910 conditions, 5780 events. 3344/5780 cut-off events. For 43130/43282 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 36740 event pairs, 934 based on Foata normal form. 14/5732 useless extension candidates. Maximal degree in co-relation 28841. Up to 1323 conditions per place. [2024-11-27 20:36:07,271 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 221 selfloop transitions, 73 changer transitions 39/343 dead transitions. [2024-11-27 20:36:07,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 343 transitions, 3744 flow [2024-11-27 20:36:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:36:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-27 20:36:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 407 transitions. [2024-11-27 20:36:07,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46514285714285714 [2024-11-27 20:36:07,273 INFO L175 Difference]: Start difference. First operand has 142 places, 133 transitions, 1615 flow. Second operand 25 states and 407 transitions. [2024-11-27 20:36:07,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 343 transitions, 3744 flow [2024-11-27 20:36:07,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 343 transitions, 3563 flow, removed 63 selfloop flow, removed 13 redundant places. [2024-11-27 20:36:07,384 INFO L231 Difference]: Finished difference. Result has 155 places, 164 transitions, 2174 flow [2024-11-27 20:36:07,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2174, PETRI_PLACES=155, PETRI_TRANSITIONS=164} [2024-11-27 20:36:07,385 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 117 predicate places. [2024-11-27 20:36:07,385 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 164 transitions, 2174 flow [2024-11-27 20:36:07,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:36:07,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:36:07,385 INFO L206 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] [2024-11-27 20:36:07,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:36:07,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:07,586 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:36:07,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:07,586 INFO L85 PathProgramCache]: Analyzing trace with hash -847125427, now seen corresponding path program 3 times [2024-11-27 20:36:07,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:07,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529385177] [2024-11-27 20:36:07,586 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:36:07,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:07,618 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:36:07,618 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:36:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:09,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:09,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529385177] [2024-11-27 20:36:09,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529385177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:36:09,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301465377] [2024-11-27 20:36:09,719 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:36:09,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:09,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:36:09,721 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:36:09,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:36:09,810 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:36:09,810 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:36:09,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 20:36:09,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:36:09,991 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 [2024-11-27 20:36:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:11,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:36:14,044 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 77 treesize of output 69 [2024-11-27 20:36:14,187 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-27 20:36:14,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 157 treesize of output 143 [2024-11-27 20:36:16,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:16,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301465377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:36:16,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:36:16,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-27 20:36:16,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848531184] [2024-11-27 20:36:16,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:36:16,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 20:36:16,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:16,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 20:36:16,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1208, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 20:36:16,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:36:16,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 164 transitions, 2174 flow. Second operand has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:36:16,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:36:16,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:36:16,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:36:23,183 INFO L124 PetriNetUnfolderBase]: 3606/6290 cut-off events. [2024-11-27 20:36:23,183 INFO L125 PetriNetUnfolderBase]: For 49008/49168 co-relation queries the response was YES. [2024-11-27 20:36:23,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31863 conditions, 6290 events. 3606/6290 cut-off events. For 49008/49168 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 41194 event pairs, 1216 based on Foata normal form. 11/6230 useless extension candidates. Maximal degree in co-relation 31786. Up to 1317 conditions per place. [2024-11-27 20:36:23,225 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 221 selfloop transitions, 56 changer transitions 17/304 dead transitions. [2024-11-27 20:36:23,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 304 transitions, 3600 flow [2024-11-27 20:36:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:36:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 20:36:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 295 transitions. [2024-11-27 20:36:23,227 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-11-27 20:36:23,227 INFO L175 Difference]: Start difference. First operand has 155 places, 164 transitions, 2174 flow. Second operand 18 states and 295 transitions. [2024-11-27 20:36:23,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 304 transitions, 3600 flow [2024-11-27 20:36:23,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 304 transitions, 3369 flow, removed 92 selfloop flow, removed 11 redundant places. [2024-11-27 20:36:23,414 INFO L231 Difference]: Finished difference. Result has 161 places, 171 transitions, 2229 flow [2024-11-27 20:36:23,414 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2229, PETRI_PLACES=161, PETRI_TRANSITIONS=171} [2024-11-27 20:36:23,415 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 123 predicate places. [2024-11-27 20:36:23,415 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 171 transitions, 2229 flow [2024-11-27 20:36:23,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:36:23,415 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:36:23,415 INFO L206 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] [2024-11-27 20:36:23,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:36:23,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:23,616 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:36:23,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:23,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1009543401, now seen corresponding path program 4 times [2024-11-27 20:36:23,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:23,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957624425] [2024-11-27 20:36:23,616 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:36:23,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:23,651 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:36:23,651 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:36:27,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:27,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:27,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957624425] [2024-11-27 20:36:27,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957624425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:36:27,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715509490] [2024-11-27 20:36:27,356 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:36:27,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:27,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:36:27,363 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:36:27,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:36:27,481 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:36:27,481 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:36:27,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 20:36:27,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:36:27,667 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 15 treesize of output 1 [2024-11-27 20:36:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:28,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:36:31,190 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 78 treesize of output 70 [2024-11-27 20:36:31,309 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-27 20:36:31,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 167 treesize of output 138 [2024-11-27 20:36:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:31,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715509490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:36:31,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:36:31,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-27 20:36:31,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121231300] [2024-11-27 20:36:31,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:36:31,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 20:36:31,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:31,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 20:36:31,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1223, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 20:36:32,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:36:32,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 171 transitions, 2229 flow. Second operand has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:36:32,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:36:32,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:36:32,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:36:46,005 INFO L124 PetriNetUnfolderBase]: 6196/10669 cut-off events. [2024-11-27 20:36:46,006 INFO L125 PetriNetUnfolderBase]: For 68695/68999 co-relation queries the response was YES. [2024-11-27 20:36:46,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51793 conditions, 10669 events. 6196/10669 cut-off events. For 68695/68999 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 75860 event pairs, 1368 based on Foata normal form. 19/10557 useless extension candidates. Maximal degree in co-relation 51716. Up to 1990 conditions per place. [2024-11-27 20:36:46,082 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 377 selfloop transitions, 149 changer transitions 66/602 dead transitions. [2024-11-27 20:36:46,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 602 transitions, 6545 flow [2024-11-27 20:36:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-27 20:36:46,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-27 20:36:46,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 712 transitions. [2024-11-27 20:36:46,084 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4623376623376623 [2024-11-27 20:36:46,084 INFO L175 Difference]: Start difference. First operand has 161 places, 171 transitions, 2229 flow. Second operand 44 states and 712 transitions. [2024-11-27 20:36:46,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 602 transitions, 6545 flow [2024-11-27 20:36:46,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 602 transitions, 6468 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-11-27 20:36:46,620 INFO L231 Difference]: Finished difference. Result has 215 places, 252 transitions, 3719 flow [2024-11-27 20:36:46,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3719, PETRI_PLACES=215, PETRI_TRANSITIONS=252} [2024-11-27 20:36:46,621 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 177 predicate places. [2024-11-27 20:36:46,621 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 252 transitions, 3719 flow [2024-11-27 20:36:46,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:36:46,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:36:46,621 INFO L206 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] [2024-11-27 20:36:46,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:36:46,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:46,822 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:36:46,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:46,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1410597141, now seen corresponding path program 5 times [2024-11-27 20:36:46,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:46,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668162791] [2024-11-27 20:36:46,823 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:36:46,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:46,851 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:36:46,851 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:36:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:50,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:50,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668162791] [2024-11-27 20:36:50,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668162791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:36:50,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470592709] [2024-11-27 20:36:50,648 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:36:50,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:50,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:36:50,650 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:36:50,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:36:50,737 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:36:50,737 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:36:50,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-27 20:36:50,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:36:50,894 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 [2024-11-27 20:36:51,973 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-27 20:36:51,974 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 82 treesize of output 35 [2024-11-27 20:36:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:52,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:36:54,043 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 77 treesize of output 69 [2024-11-27 20:36:54,185 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-27 20:36:54,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 161 treesize of output 147 [2024-11-27 20:36:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:56,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470592709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:36:56,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:36:56,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2024-11-27 20:36:56,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608546962] [2024-11-27 20:36:56,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:36:56,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 20:36:56,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:56,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 20:36:56,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:36:56,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:36:56,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 252 transitions, 3719 flow. Second operand has 35 states, 35 states have (on average 9.4) internal successors, (329), 35 states have internal predecessors, (329), 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) [2024-11-27 20:36:56,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:36:56,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:36:56,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:37:17,215 WARN L286 SmtUtils]: Spent 12.50s on a formula simplification. DAG size of input: 173 DAG size of output: 55 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:37:23,402 INFO L124 PetriNetUnfolderBase]: 6246/10751 cut-off events. [2024-11-27 20:37:23,402 INFO L125 PetriNetUnfolderBase]: For 87679/87991 co-relation queries the response was YES. [2024-11-27 20:37:23,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56140 conditions, 10751 events. 6246/10751 cut-off events. For 87679/87991 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 77185 event pairs, 2301 based on Foata normal form. 37/10658 useless extension candidates. Maximal degree in co-relation 56031. Up to 4266 conditions per place. [2024-11-27 20:37:23,505 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 274 selfloop transitions, 80 changer transitions 17/381 dead transitions. [2024-11-27 20:37:23,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 381 transitions, 5232 flow [2024-11-27 20:37:23,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:37:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 20:37:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 292 transitions. [2024-11-27 20:37:23,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4634920634920635 [2024-11-27 20:37:23,506 INFO L175 Difference]: Start difference. First operand has 215 places, 252 transitions, 3719 flow. Second operand 18 states and 292 transitions. [2024-11-27 20:37:23,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 381 transitions, 5232 flow [2024-11-27 20:37:24,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 381 transitions, 4806 flow, removed 158 selfloop flow, removed 20 redundant places. [2024-11-27 20:37:24,018 INFO L231 Difference]: Finished difference. Result has 208 places, 259 transitions, 3662 flow [2024-11-27 20:37:24,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3328, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3662, PETRI_PLACES=208, PETRI_TRANSITIONS=259} [2024-11-27 20:37:24,019 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 170 predicate places. [2024-11-27 20:37:24,019 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 259 transitions, 3662 flow [2024-11-27 20:37:24,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.4) internal successors, (329), 35 states have internal predecessors, (329), 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) [2024-11-27 20:37:24,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:37:24,019 INFO L206 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] [2024-11-27 20:37:24,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:37:24,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:37:24,220 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:37:24,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:37:24,220 INFO L85 PathProgramCache]: Analyzing trace with hash 571773899, now seen corresponding path program 6 times [2024-11-27 20:37:24,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:37:24,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25095950] [2024-11-27 20:37:24,221 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:37:24,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:37:24,241 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-27 20:37:24,241 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:37:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:25,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:37:25,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25095950] [2024-11-27 20:37:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25095950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:37:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250899655] [2024-11-27 20:37:25,815 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:37:25,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:37:25,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:37:25,817 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:37:25,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:37:25,935 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-27 20:37:25,935 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:37:25,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-27 20:37:25,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:37:26,019 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 15 treesize of output 1 [2024-11-27 20:37:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:27,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:37:28,861 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 78 treesize of output 70 [2024-11-27 20:37:28,958 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-27 20:37:28,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 167 treesize of output 138 [2024-11-27 20:37:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:29,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250899655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:37:29,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:37:29,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2024-11-27 20:37:29,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720366065] [2024-11-27 20:37:29,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:37:29,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 20:37:29,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:37:29,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 20:37:29,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:37:29,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:37:29,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 259 transitions, 3662 flow. Second operand has 35 states, 35 states have (on average 9.371428571428572) internal successors, (328), 35 states have internal predecessors, (328), 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) [2024-11-27 20:37:29,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:37:29,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:37:29,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:37:42,174 INFO L124 PetriNetUnfolderBase]: 6892/11872 cut-off events. [2024-11-27 20:37:42,174 INFO L125 PetriNetUnfolderBase]: For 90806/91207 co-relation queries the response was YES. [2024-11-27 20:37:42,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59296 conditions, 11872 events. 6892/11872 cut-off events. For 90806/91207 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 86340 event pairs, 2241 based on Foata normal form. 31/11731 useless extension candidates. Maximal degree in co-relation 59204. Up to 2163 conditions per place. [2024-11-27 20:37:42,279 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 398 selfloop transitions, 153 changer transitions 51/612 dead transitions. [2024-11-27 20:37:42,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 612 transitions, 7038 flow [2024-11-27 20:37:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-27 20:37:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-27 20:37:42,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 696 transitions. [2024-11-27 20:37:42,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45194805194805193 [2024-11-27 20:37:42,281 INFO L175 Difference]: Start difference. First operand has 208 places, 259 transitions, 3662 flow. Second operand 44 states and 696 transitions. [2024-11-27 20:37:42,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 612 transitions, 7038 flow [2024-11-27 20:37:42,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 612 transitions, 6961 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-11-27 20:37:42,859 INFO L231 Difference]: Finished difference. Result has 252 places, 284 transitions, 4256 flow [2024-11-27 20:37:42,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3599, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4256, PETRI_PLACES=252, PETRI_TRANSITIONS=284} [2024-11-27 20:37:42,860 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 214 predicate places. [2024-11-27 20:37:42,860 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 284 transitions, 4256 flow [2024-11-27 20:37:42,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.371428571428572) internal successors, (328), 35 states have internal predecessors, (328), 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) [2024-11-27 20:37:42,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:37:42,861 INFO L206 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] [2024-11-27 20:37:42,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:37:43,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 20:37:43,061 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:37:43,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:37:43,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1400304649, now seen corresponding path program 7 times [2024-11-27 20:37:43,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:37:43,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524167587] [2024-11-27 20:37:43,062 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:37:43,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:37:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:37:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:45,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:37:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524167587] [2024-11-27 20:37:45,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524167587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:37:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409802612] [2024-11-27 20:37:45,722 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:37:45,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:37:45,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:37:45,724 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:37:45,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:37:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:37:45,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 20:37:45,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:37:45,976 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 15 treesize of output 1 [2024-11-27 20:37:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:47,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:38:11,640 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 81 treesize of output 73 [2024-11-27 20:38:11,857 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-27 20:38:11,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 178 treesize of output 164 [2024-11-27 20:38:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:38:17,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409802612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:38:17,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:38:17,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-27 20:38:17,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110193778] [2024-11-27 20:38:17,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:38:17,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 20:38:17,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:38:17,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 20:38:17,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1188, Unknown=5, NotChecked=0, Total=1406 [2024-11-27 20:38:17,205 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:38:17,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 284 transitions, 4256 flow. Second operand has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:38:17,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:38:17,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:38:17,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:38:51,897 WARN L286 SmtUtils]: Spent 16.32s on a formula simplification. DAG size of input: 93 DAG size of output: 63 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:39:01,946 INFO L124 PetriNetUnfolderBase]: 7342/12655 cut-off events. [2024-11-27 20:39:01,947 INFO L125 PetriNetUnfolderBase]: For 113621/113998 co-relation queries the response was YES. [2024-11-27 20:39:02,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66457 conditions, 12655 events. 7342/12655 cut-off events. For 113621/113998 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 93069 event pairs, 2833 based on Foata normal form. 37/12523 useless extension candidates. Maximal degree in co-relation 66350. Up to 4831 conditions per place. [2024-11-27 20:39:02,109 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 337 selfloop transitions, 104 changer transitions 45/496 dead transitions. [2024-11-27 20:39:02,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 496 transitions, 6593 flow [2024-11-27 20:39:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-27 20:39:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-27 20:39:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 436 transitions. [2024-11-27 20:39:02,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4448979591836735 [2024-11-27 20:39:02,111 INFO L175 Difference]: Start difference. First operand has 252 places, 284 transitions, 4256 flow. Second operand 28 states and 436 transitions. [2024-11-27 20:39:02,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 496 transitions, 6593 flow [2024-11-27 20:39:02,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 496 transitions, 6273 flow, removed 76 selfloop flow, removed 27 redundant places. [2024-11-27 20:39:02,941 INFO L231 Difference]: Finished difference. Result has 254 places, 304 transitions, 4618 flow [2024-11-27 20:39:02,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3980, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4618, PETRI_PLACES=254, PETRI_TRANSITIONS=304} [2024-11-27 20:39:02,942 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 216 predicate places. [2024-11-27 20:39:02,942 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 304 transitions, 4618 flow [2024-11-27 20:39:02,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:39:02,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:39:02,942 INFO L206 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] [2024-11-27 20:39:02,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-27 20:39:03,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 20:39:03,143 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:39:03,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:39:03,144 INFO L85 PathProgramCache]: Analyzing trace with hash -656929893, now seen corresponding path program 8 times [2024-11-27 20:39:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:39:03,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168828848] [2024-11-27 20:39:03,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:39:03,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:39:03,167 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:39:03,168 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:39:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:39:05,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:39:05,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168828848] [2024-11-27 20:39:05,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168828848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:39:05,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944887605] [2024-11-27 20:39:05,706 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:39:05,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:39:05,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:39:05,709 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:39:05,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:39:05,806 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:39:05,806 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:39:05,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 20:39:05,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:39:06,030 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 [2024-11-27 20:39:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:39:07,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:39:11,892 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 77 treesize of output 69 [2024-11-27 20:39:12,106 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-27 20:39:12,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 161 treesize of output 147 [2024-11-27 20:39:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:39:15,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944887605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:39:15,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:39:15,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-27 20:39:15,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831628096] [2024-11-27 20:39:15,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:39:15,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 20:39:15,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:39:15,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 20:39:15,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 20:39:15,123 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:39:15,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 304 transitions, 4618 flow. Second operand has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:39:15,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:39:15,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:39:15,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:39:21,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:39:30,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:39:33,374 INFO L124 PetriNetUnfolderBase]: 7480/12916 cut-off events. [2024-11-27 20:39:33,374 INFO L125 PetriNetUnfolderBase]: For 117793/118184 co-relation queries the response was YES. [2024-11-27 20:39:33,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67548 conditions, 12916 events. 7480/12916 cut-off events. For 117793/118184 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 96201 event pairs, 3117 based on Foata normal form. 26/12775 useless extension candidates. Maximal degree in co-relation 67444. Up to 4837 conditions per place. [2024-11-27 20:39:33,558 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 340 selfloop transitions, 87 changer transitions 40/477 dead transitions. [2024-11-27 20:39:33,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 477 transitions, 6446 flow [2024-11-27 20:39:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 20:39:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-27 20:39:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 401 transitions. [2024-11-27 20:39:33,560 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44065934065934065 [2024-11-27 20:39:33,560 INFO L175 Difference]: Start difference. First operand has 254 places, 304 transitions, 4618 flow. Second operand 26 states and 401 transitions. [2024-11-27 20:39:33,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 477 transitions, 6446 flow [2024-11-27 20:39:34,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 477 transitions, 6285 flow, removed 28 selfloop flow, removed 17 redundant places. [2024-11-27 20:39:34,427 INFO L231 Difference]: Finished difference. Result has 262 places, 311 transitions, 4771 flow [2024-11-27 20:39:34,427 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4771, PETRI_PLACES=262, PETRI_TRANSITIONS=311} [2024-11-27 20:39:34,428 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 224 predicate places. [2024-11-27 20:39:34,428 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 311 transitions, 4771 flow [2024-11-27 20:39:34,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:39:34,428 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:39:34,428 INFO L206 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] [2024-11-27 20:39:34,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 20:39:34,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-27 20:39:34,629 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:39:34,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:39:34,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1688506425, now seen corresponding path program 9 times [2024-11-27 20:39:34,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:39:34,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889861131] [2024-11-27 20:39:34,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:39:34,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:39:34,649 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:39:34,649 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:39:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:39:36,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:39:36,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889861131] [2024-11-27 20:39:36,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889861131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:39:36,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843918206] [2024-11-27 20:39:36,523 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:39:36,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:39:36,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:39:36,526 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:39:36,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:39:36,634 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:39:36,634 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:39:36,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-27 20:39:36,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:39:36,849 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 15 treesize of output 1 [2024-11-27 20:39:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:39:38,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:39:41,275 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 78 treesize of output 70 [2024-11-27 20:39:41,423 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-27 20:39:41,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 167 treesize of output 138 [2024-11-27 20:39:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:39:42,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843918206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:39:42,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:39:42,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-11-27 20:39:42,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339030491] [2024-11-27 20:39:42,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:39:42,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-27 20:39:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:39:42,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-27 20:39:42,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 20:39:42,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:39:42,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 311 transitions, 4771 flow. Second operand has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 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) [2024-11-27 20:39:42,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:39:42,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:39:42,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:39:54,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:39:58,161 INFO L124 PetriNetUnfolderBase]: 8558/14759 cut-off events. [2024-11-27 20:39:58,161 INFO L125 PetriNetUnfolderBase]: For 141958/142442 co-relation queries the response was YES. [2024-11-27 20:39:58,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78263 conditions, 14759 events. 8558/14759 cut-off events. For 141958/142442 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 111722 event pairs, 2439 based on Foata normal form. 31/14594 useless extension candidates. Maximal degree in co-relation 78159. Up to 2672 conditions per place. [2024-11-27 20:39:58,390 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 381 selfloop transitions, 198 changer transitions 37/626 dead transitions. [2024-11-27 20:39:58,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 626 transitions, 8469 flow [2024-11-27 20:39:58,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-27 20:39:58,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-27 20:39:58,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 561 transitions. [2024-11-27 20:39:58,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-11-27 20:39:58,393 INFO L175 Difference]: Start difference. First operand has 262 places, 311 transitions, 4771 flow. Second operand 34 states and 561 transitions. [2024-11-27 20:39:58,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 626 transitions, 8469 flow [2024-11-27 20:39:59,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 626 transitions, 8292 flow, removed 17 selfloop flow, removed 17 redundant places. [2024-11-27 20:39:59,867 INFO L231 Difference]: Finished difference. Result has 288 places, 366 transitions, 6148 flow [2024-11-27 20:39:59,867 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4635, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6148, PETRI_PLACES=288, PETRI_TRANSITIONS=366} [2024-11-27 20:39:59,868 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 250 predicate places. [2024-11-27 20:39:59,868 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 366 transitions, 6148 flow [2024-11-27 20:39:59,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 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) [2024-11-27 20:39:59,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:39:59,869 INFO L206 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] [2024-11-27 20:39:59,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 20:40:00,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 20:40:00,069 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:40:00,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:40:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1876628299, now seen corresponding path program 10 times [2024-11-27 20:40:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:40:00,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940944457] [2024-11-27 20:40:00,070 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:40:00,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:40:00,097 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:40:00,097 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:40:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:40:04,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:40:04,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940944457] [2024-11-27 20:40:04,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940944457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:40:04,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982965463] [2024-11-27 20:40:04,474 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:40:04,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:40:04,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:40:04,476 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:40:04,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 20:40:04,577 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:40:04,577 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:40:04,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 20:40:04,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:40:04,847 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 15 treesize of output 1 [2024-11-27 20:40:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:40:06,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:40:09,804 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 78 treesize of output 70 [2024-11-27 20:40:09,944 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-27 20:40:09,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 163 treesize of output 134 [2024-11-27 20:40:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:40:10,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982965463] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:40:10,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:40:10,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-27 20:40:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660859360] [2024-11-27 20:40:10,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:40:10,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 20:40:10,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:40:10,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 20:40:10,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 20:40:10,843 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:40:10,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 366 transitions, 6148 flow. Second operand has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:40:10,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:40:10,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:40:10,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:40:31,712 INFO L124 PetriNetUnfolderBase]: 10292/17580 cut-off events. [2024-11-27 20:40:31,712 INFO L125 PetriNetUnfolderBase]: For 193919/194736 co-relation queries the response was YES. [2024-11-27 20:40:31,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97687 conditions, 17580 events. 10292/17580 cut-off events. For 193919/194736 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 135649 event pairs, 2104 based on Foata normal form. 31/17291 useless extension candidates. Maximal degree in co-relation 97568. Up to 3769 conditions per place. [2024-11-27 20:40:32,041 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 429 selfloop transitions, 247 changer transitions 66/752 dead transitions. [2024-11-27 20:40:32,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 752 transitions, 10749 flow [2024-11-27 20:40:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-27 20:40:32,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-27 20:40:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 707 transitions. [2024-11-27 20:40:32,043 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4488888888888889 [2024-11-27 20:40:32,043 INFO L175 Difference]: Start difference. First operand has 288 places, 366 transitions, 6148 flow. Second operand 45 states and 707 transitions. [2024-11-27 20:40:32,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 752 transitions, 10749 flow [2024-11-27 20:40:33,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 752 transitions, 10291 flow, removed 181 selfloop flow, removed 13 redundant places. [2024-11-27 20:40:33,939 INFO L231 Difference]: Finished difference. Result has 338 places, 433 transitions, 7775 flow [2024-11-27 20:40:33,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5789, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=7775, PETRI_PLACES=338, PETRI_TRANSITIONS=433} [2024-11-27 20:40:33,940 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 300 predicate places. [2024-11-27 20:40:33,941 INFO L471 AbstractCegarLoop]: Abstraction has has 338 places, 433 transitions, 7775 flow [2024-11-27 20:40:33,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:40:33,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:40:33,941 INFO L206 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] [2024-11-27 20:40:33,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 20:40:34,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-27 20:40:34,142 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:40:34,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:40:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1168304799, now seen corresponding path program 11 times [2024-11-27 20:40:34,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:40:34,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829815950] [2024-11-27 20:40:34,145 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:40:34,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:40:34,182 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:40:34,183 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:40:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:40:38,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:40:38,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829815950] [2024-11-27 20:40:38,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829815950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:40:38,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124019926] [2024-11-27 20:40:38,205 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:40:38,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:40:38,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:40:38,209 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:40:38,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 20:40:38,299 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:40:38,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:40:38,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-27 20:40:38,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:40:38,505 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 [2024-11-27 20:40:40,071 INFO L349 Elim1Store]: treesize reduction 34, result has 17.1 percent of original size [2024-11-27 20:40:40,072 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 68 treesize of output 38 [2024-11-27 20:40:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:40:40,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:40:49,363 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 81 treesize of output 73 [2024-11-27 20:40:49,565 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-27 20:40:49,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 178 treesize of output 164 [2024-11-27 20:40:55,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:40:55,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124019926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:40:55,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:40:55,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-27 20:40:55,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574374373] [2024-11-27 20:40:55,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:40:55,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-27 20:40:55,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:40:55,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-27 20:40:55,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1141, Unknown=1, NotChecked=0, Total=1332 [2024-11-27 20:40:55,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:40:55,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 433 transitions, 7775 flow. Second operand has 37 states, 37 states have (on average 9.27027027027027) internal successors, (343), 37 states have internal predecessors, (343), 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) [2024-11-27 20:40:55,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:40:55,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:40:55,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:41:20,000 INFO L124 PetriNetUnfolderBase]: 10800/18464 cut-off events. [2024-11-27 20:41:20,000 INFO L125 PetriNetUnfolderBase]: For 215445/216121 co-relation queries the response was YES. [2024-11-27 20:41:20,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105840 conditions, 18464 events. 10800/18464 cut-off events. For 215445/216121 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 143361 event pairs, 4598 based on Foata normal form. 26/18207 useless extension candidates. Maximal degree in co-relation 105690. Up to 6413 conditions per place. [2024-11-27 20:41:20,213 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 431 selfloop transitions, 141 changer transitions 47/629 dead transitions. [2024-11-27 20:41:20,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 629 transitions, 10479 flow [2024-11-27 20:41:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:41:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-27 20:41:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 404 transitions. [2024-11-27 20:41:20,215 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4617142857142857 [2024-11-27 20:41:20,215 INFO L175 Difference]: Start difference. First operand has 338 places, 433 transitions, 7775 flow. Second operand 25 states and 404 transitions. [2024-11-27 20:41:20,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 629 transitions, 10479 flow [2024-11-27 20:41:22,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 629 transitions, 10056 flow, removed 128 selfloop flow, removed 22 redundant places. [2024-11-27 20:41:22,359 INFO L231 Difference]: Finished difference. Result has 340 places, 456 transitions, 8295 flow [2024-11-27 20:41:22,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7411, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=8295, PETRI_PLACES=340, PETRI_TRANSITIONS=456} [2024-11-27 20:41:22,360 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 302 predicate places. [2024-11-27 20:41:22,360 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 456 transitions, 8295 flow [2024-11-27 20:41:22,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 9.27027027027027) internal successors, (343), 37 states have internal predecessors, (343), 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) [2024-11-27 20:41:22,361 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:41:22,361 INFO L206 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] [2024-11-27 20:41:22,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-27 20:41:22,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-27 20:41:22,561 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:41:22,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:41:22,562 INFO L85 PathProgramCache]: Analyzing trace with hash -968085241, now seen corresponding path program 12 times [2024-11-27 20:41:22,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:41:22,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785288856] [2024-11-27 20:41:22,563 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:41:22,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:41:22,585 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-27 20:41:22,585 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:41:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:41:24,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:41:24,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785288856] [2024-11-27 20:41:24,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785288856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:41:24,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680810545] [2024-11-27 20:41:24,352 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:41:24,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:41:24,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:41:24,355 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:41:24,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 20:41:24,451 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-27 20:41:24,452 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:41:24,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 20:41:24,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:41:24,641 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 [2024-11-27 20:41:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:41:26,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:41:31,431 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 81 treesize of output 73 [2024-11-27 20:41:31,676 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-27 20:41:31,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 178 treesize of output 164 [2024-11-27 20:41:38,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:41:38,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680810545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:41:38,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:41:38,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-27 20:41:38,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701937317] [2024-11-27 20:41:38,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:41:38,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 20:41:38,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:41:38,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 20:41:38,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1204, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 20:41:38,277 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:41:38,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 456 transitions, 8295 flow. Second operand has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:41:38,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:41:38,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:41:38,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:41:58,156 INFO L124 PetriNetUnfolderBase]: 10884/18648 cut-off events. [2024-11-27 20:41:58,156 INFO L125 PetriNetUnfolderBase]: For 226310/226957 co-relation queries the response was YES. [2024-11-27 20:41:58,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105817 conditions, 18648 events. 10884/18648 cut-off events. For 226310/226957 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 146041 event pairs, 4558 based on Foata normal form. 26/18403 useless extension candidates. Maximal degree in co-relation 105675. Up to 6419 conditions per place. [2024-11-27 20:41:58,698 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 431 selfloop transitions, 144 changer transitions 39/624 dead transitions. [2024-11-27 20:41:58,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 624 transitions, 10454 flow [2024-11-27 20:41:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:41:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-27 20:41:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 391 transitions. [2024-11-27 20:41:58,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44685714285714284 [2024-11-27 20:41:58,700 INFO L175 Difference]: Start difference. First operand has 340 places, 456 transitions, 8295 flow. Second operand 25 states and 391 transitions. [2024-11-27 20:41:58,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 624 transitions, 10454 flow [2024-11-27 20:42:00,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 624 transitions, 10297 flow, removed 72 selfloop flow, removed 11 redundant places. [2024-11-27 20:42:00,882 INFO L231 Difference]: Finished difference. Result has 353 places, 464 transitions, 8625 flow [2024-11-27 20:42:00,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8166, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=8625, PETRI_PLACES=353, PETRI_TRANSITIONS=464} [2024-11-27 20:42:00,883 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 315 predicate places. [2024-11-27 20:42:00,883 INFO L471 AbstractCegarLoop]: Abstraction has has 353 places, 464 transitions, 8625 flow [2024-11-27 20:42:00,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:42:00,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:42:00,884 INFO L206 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] [2024-11-27 20:42:00,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 20:42:01,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:42:01,084 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:42:01,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:42:01,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1095357951, now seen corresponding path program 13 times [2024-11-27 20:42:01,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:42:01,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665345655] [2024-11-27 20:42:01,086 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:42:01,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:42:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:42:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:42:05,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:42:05,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665345655] [2024-11-27 20:42:05,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665345655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:42:05,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255275634] [2024-11-27 20:42:05,659 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:42:05,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:42:05,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:42:05,661 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:42:05,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 20:42:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:42:05,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 20:42:05,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:42:06,018 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 15 treesize of output 1 [2024-11-27 20:42:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:42:07,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:42:11,515 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 77 treesize of output 69 [2024-11-27 20:42:11,728 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-27 20:42:11,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 161 treesize of output 147 [2024-11-27 20:42:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:42:14,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255275634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:42:14,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:42:14,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-27 20:42:14,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968792246] [2024-11-27 20:42:14,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:42:14,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-27 20:42:14,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:42:14,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-27 20:42:14,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 20:42:14,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:42:14,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 464 transitions, 8625 flow. Second operand has 37 states, 37 states have (on average 9.243243243243244) internal successors, (342), 37 states have internal predecessors, (342), 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) [2024-11-27 20:42:14,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:42:14,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:42:14,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:42:36,812 INFO L124 PetriNetUnfolderBase]: 11032/18925 cut-off events. [2024-11-27 20:42:36,813 INFO L125 PetriNetUnfolderBase]: For 240142/240857 co-relation queries the response was YES. [2024-11-27 20:42:37,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108145 conditions, 18925 events. 11032/18925 cut-off events. For 240142/240857 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 147698 event pairs, 4078 based on Foata normal form. 25/18641 useless extension candidates. Maximal degree in co-relation 108003. Up to 6413 conditions per place. [2024-11-27 20:42:37,084 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 434 selfloop transitions, 161 changer transitions 44/649 dead transitions. [2024-11-27 20:42:37,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 649 transitions, 10941 flow [2024-11-27 20:42:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-27 20:42:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-27 20:42:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 438 transitions. [2024-11-27 20:42:37,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44693877551020406 [2024-11-27 20:42:37,086 INFO L175 Difference]: Start difference. First operand has 353 places, 464 transitions, 8625 flow. Second operand 28 states and 438 transitions. [2024-11-27 20:42:37,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 649 transitions, 10941 flow [2024-11-27 20:42:39,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 649 transitions, 10764 flow, removed 27 selfloop flow, removed 17 redundant places. [2024-11-27 20:42:39,333 INFO L231 Difference]: Finished difference. Result has 366 places, 472 transitions, 9002 flow [2024-11-27 20:42:39,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8478, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=9002, PETRI_PLACES=366, PETRI_TRANSITIONS=472} [2024-11-27 20:42:39,334 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 328 predicate places. [2024-11-27 20:42:39,334 INFO L471 AbstractCegarLoop]: Abstraction has has 366 places, 472 transitions, 9002 flow [2024-11-27 20:42:39,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 9.243243243243244) internal successors, (342), 37 states have internal predecessors, (342), 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) [2024-11-27 20:42:39,335 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:42:39,335 INFO L206 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] [2024-11-27 20:42:39,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 20:42:39,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-27 20:42:39,535 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:42:39,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:42:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2133345625, now seen corresponding path program 14 times [2024-11-27 20:42:39,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:42:39,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515438180] [2024-11-27 20:42:39,536 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:42:39,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:42:39,559 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:42:39,560 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:42:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:42:41,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:42:41,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515438180] [2024-11-27 20:42:41,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515438180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:42:41,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235728274] [2024-11-27 20:42:41,992 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:42:41,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:42:41,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:42:41,994 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:42:41,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4810110-5049-422a-8176-e889c98f5c25/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 20:42:42,092 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:42:42,092 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:42:42,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 20:42:42,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:42:42,297 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 [2024-11-27 20:42:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:42:44,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:42:57,242 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 81 treesize of output 73 [2024-11-27 20:42:57,458 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-27 20:42:57,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 178 treesize of output 164 [2024-11-27 20:43:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:43:04,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235728274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:43:04,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:43:04,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-27 20:43:04,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545488244] [2024-11-27 20:43:04,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:43:04,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 20:43:04,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:43:04,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 20:43:04,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1209, Unknown=2, NotChecked=0, Total=1406 [2024-11-27 20:43:04,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-27 20:43:04,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 472 transitions, 9002 flow. Second operand has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 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) [2024-11-27 20:43:04,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:43:04,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-27 20:43:04,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:43:19,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:43:23,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:43:25,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:43:29,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:43:33,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:43:37,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:43:41,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:43:45,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:43:49,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:43:53,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:43:57,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:44:02,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:44:06,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:44:10,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:44:14,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:44:39,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:44:55,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:44:59,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:01,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:05,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:09,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:13,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:17,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:22,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:26,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:30,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:34,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:38,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:42,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:46,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:48,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:52,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:45:57,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:46:01,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:46:05,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:46:06,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:46:10,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:46:14,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:46:18,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:46:52,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:46:56,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:47:00,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:47:04,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:47:08,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:47:12,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:47:16,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:47:21,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:47:53,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:47:57,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:48:01,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:48:05,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:48:09,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:48:14,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:48:18,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:48:22,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:48:26,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:48:30,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]