./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl --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 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:15:15,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:15:15,795 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:15:15,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:15:15,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:15:15,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:15:15,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:15:15,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:15:15,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:15:15,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:15:15,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:15:15,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:15:15,844 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:15:15,844 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:15:15,845 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:15:15,845 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:15:15,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:15:15,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:15:15,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:15:15,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:15:15,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:15:15,849 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:15:15,849 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:15:15,850 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:15:15,850 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:15:15,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:15:15,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:15:15,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:15:15,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:15,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:15:15,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:15:15,879 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:15:15,880 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:15:15,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:15:15,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:15:15,881 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:15:15,881 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:15:15,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:15:15,882 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:15:15,882 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 [2023-11-12 02:15:16,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:15:16,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:15:16,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:15:16,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:15:16,206 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:15:16,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-12 02:15:19,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:15:19,552 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:15:19,552 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-12 02:15:19,573 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/data/4c52fe681/8b208d7636e94f6c9f80c28836ba0bf8/FLAGd853d3dc4 [2023-11-12 02:15:19,592 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/data/4c52fe681/8b208d7636e94f6c9f80c28836ba0bf8 [2023-11-12 02:15:19,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:15:19,596 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:15:19,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:19,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:15:19,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:15:19,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:19" (1/1) ... [2023-11-12 02:15:19,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f403404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:19, skipping insertion in model container [2023-11-12 02:15:19,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:19" (1/1) ... [2023-11-12 02:15:19,656 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:15:19,839 WARN L240 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_545ae470-dd08-42d2-b8fb-1a38863657e9/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-12 02:15:20,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:20,036 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:15:20,050 WARN L240 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_545ae470-dd08-42d2-b8fb-1a38863657e9/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-12 02:15:20,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:20,133 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:15:20,133 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:15:20,141 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:15:20,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20 WrapperNode [2023-11-12 02:15:20,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:20,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:20,144 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:15:20,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:15:20,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20" (1/1) ... [2023-11-12 02:15:20,188 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20" (1/1) ... [2023-11-12 02:15:20,224 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-12 02:15:20,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:20,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:15:20,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:15:20,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:15:20,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20" (1/1) ... [2023-11-12 02:15:20,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20" (1/1) ... [2023-11-12 02:15:20,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20" (1/1) ... [2023-11-12 02:15:20,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20" (1/1) ... [2023-11-12 02:15:20,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20" (1/1) ... [2023-11-12 02:15:20,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20" (1/1) ... [2023-11-12 02:15:20,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20" (1/1) ... [2023-11-12 02:15:20,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20" (1/1) ... [2023-11-12 02:15:20,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:15:20,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:15:20,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:15:20,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:15:20,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20" (1/1) ... [2023-11-12 02:15:20,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:20,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:20,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:15:20,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:15:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:15:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:15:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:15:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:15:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:15:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:15:20,391 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:15:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:15:20,392 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:15:20,392 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:15:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:15:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:15:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:15:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:15:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:15:20,396 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:15:20,618 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:15:20,621 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:15:20,828 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:15:20,835 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:15:20,836 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:15:20,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:20 BoogieIcfgContainer [2023-11-12 02:15:20,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:15:20,841 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:15:20,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:15:20,845 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:15:20,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:15:19" (1/3) ... [2023-11-12 02:15:20,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64913ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:20, skipping insertion in model container [2023-11-12 02:15:20,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:20" (2/3) ... [2023-11-12 02:15:20,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64913ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:20, skipping insertion in model container [2023-11-12 02:15:20,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:20" (3/3) ... [2023-11-12 02:15:20,848 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-12 02:15:20,858 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:15:20,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:15:20,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:15:20,870 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:15:20,931 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:15:20,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 87 transitions, 186 flow [2023-11-12 02:15:21,059 INFO L124 PetriNetUnfolderBase]: 2/84 cut-off events. [2023-11-12 02:15:21,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:15:21,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 84 events. 2/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-11-12 02:15:21,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 87 transitions, 186 flow [2023-11-12 02:15:21,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-11-12 02:15:21,085 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:15:21,097 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-11-12 02:15:21,100 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-11-12 02:15:21,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-11-12 02:15:21,135 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-11-12 02:15:21,135 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:15:21,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-12 02:15:21,138 INFO L119 LiptonReduction]: Number of co-enabled transitions 1080 [2023-11-12 02:15:23,585 INFO L134 LiptonReduction]: Checked pairs total: 2219 [2023-11-12 02:15:23,585 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-11-12 02:15:23,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:15:23,611 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67be0dea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:15:23,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-12 02:15:23,628 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:15:23,628 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-12 02:15:23,628 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:15:23,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:23,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:23,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:15:23,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:23,639 INFO L85 PathProgramCache]: Analyzing trace with hash -333969013, now seen corresponding path program 1 times [2023-11-12 02:15:23,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:23,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049545281] [2023-11-12 02:15:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:23,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:24,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:24,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049545281] [2023-11-12 02:15:24,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049545281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:24,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:24,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:15:24,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456902319] [2023-11-12 02:15:24,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:24,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:24,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:24,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:24,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 144 [2023-11-12 02:15:24,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2023-11-12 02:15:24,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:24,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 144 [2023-11-12 02:15:24,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:24,671 INFO L124 PetriNetUnfolderBase]: 562/908 cut-off events. [2023-11-12 02:15:24,671 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-12 02:15:24,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 908 events. 562/908 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3954 event pairs, 238 based on Foata normal form. 53/961 useless extension candidates. Maximal degree in co-relation 1862. Up to 464 conditions per place. [2023-11-12 02:15:24,688 INFO L140 encePairwiseOnDemand]: 135/144 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-11-12 02:15:24,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-11-12 02:15:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-11-12 02:15:24,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5717592592592593 [2023-11-12 02:15:24,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-11-12 02:15:24,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-11-12 02:15:24,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:24,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-11-12 02:15:24,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2023-11-12 02:15:24,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-12 02:15:24,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-12 02:15:24,725 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 247 transitions. [2023-11-12 02:15:24,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-11-12 02:15:24,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:15:24,731 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-11-12 02:15:24,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-11-12 02:15:24,738 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-12 02:15:24,738 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-11-12 02:15:24,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2023-11-12 02:15:24,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:24,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:24,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:15:24,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:15:24,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:24,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1763105421, now seen corresponding path program 1 times [2023-11-12 02:15:24,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:24,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837172749] [2023-11-12 02:15:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:24,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:24,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:24,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837172749] [2023-11-12 02:15:24,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837172749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:24,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:24,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:24,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111494973] [2023-11-12 02:15:24,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:24,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:15:24,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:24,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:15:24,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:15:25,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 144 [2023-11-12 02:15:25,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-11-12 02:15:25,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:25,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 144 [2023-11-12 02:15:25,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:25,173 INFO L124 PetriNetUnfolderBase]: 526/853 cut-off events. [2023-11-12 02:15:25,174 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2023-11-12 02:15:25,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 853 events. 526/853 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3504 event pairs, 110 based on Foata normal form. 10/863 useless extension candidates. Maximal degree in co-relation 2435. Up to 345 conditions per place. [2023-11-12 02:15:25,183 INFO L140 encePairwiseOnDemand]: 136/144 looper letters, 30 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2023-11-12 02:15:25,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 224 flow [2023-11-12 02:15:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:15:25,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:15:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2023-11-12 02:15:25,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2023-11-12 02:15:25,188 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 318 transitions. [2023-11-12 02:15:25,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 318 transitions. [2023-11-12 02:15:25,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:25,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 318 transitions. [2023-11-12 02:15:25,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 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) [2023-11-12 02:15:25,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-12 02:15:25,204 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-12 02:15:25,204 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 318 transitions. [2023-11-12 02:15:25,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 224 flow [2023-11-12 02:15:25,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:25,209 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 138 flow [2023-11-12 02:15:25,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-12 02:15:25,211 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-12 02:15:25,211 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 138 flow [2023-11-12 02:15:25,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-11-12 02:15:25,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:25,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:25,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:15:25,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:15:25,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:25,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1763106103, now seen corresponding path program 1 times [2023-11-12 02:15:25,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:25,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428615122] [2023-11-12 02:15:25,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:25,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:25,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:25,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428615122] [2023-11-12 02:15:25,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428615122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:25,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:25,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:25,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026776998] [2023-11-12 02:15:25,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:25,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:15:25,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:25,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:15:25,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:15:25,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 144 [2023-11-12 02:15:25,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-11-12 02:15:25,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:25,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 144 [2023-11-12 02:15:25,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:25,572 INFO L124 PetriNetUnfolderBase]: 493/802 cut-off events. [2023-11-12 02:15:25,572 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2023-11-12 02:15:25,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2527 conditions, 802 events. 493/802 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3339 event pairs, 59 based on Foata normal form. 6/808 useless extension candidates. Maximal degree in co-relation 2512. Up to 355 conditions per place. [2023-11-12 02:15:25,582 INFO L140 encePairwiseOnDemand]: 136/144 looper letters, 36 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2023-11-12 02:15:25,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 324 flow [2023-11-12 02:15:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:15:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:15:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2023-11-12 02:15:25,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590277777777778 [2023-11-12 02:15:25,586 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 322 transitions. [2023-11-12 02:15:25,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 322 transitions. [2023-11-12 02:15:25,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:25,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 322 transitions. [2023-11-12 02:15:25,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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) [2023-11-12 02:15:25,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-12 02:15:25,593 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-12 02:15:25,593 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 138 flow. Second operand 4 states and 322 transitions. [2023-11-12 02:15:25,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 324 flow [2023-11-12 02:15:25,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 48 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:25,601 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 240 flow [2023-11-12 02:15:25,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-11-12 02:15:25,603 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-12 02:15:25,606 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 240 flow [2023-11-12 02:15:25,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-11-12 02:15:25,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:25,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:25,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:15:25,607 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:15:25,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:25,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1178304544, now seen corresponding path program 1 times [2023-11-12 02:15:25,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:25,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092817531] [2023-11-12 02:15:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:25,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:25,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:25,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092817531] [2023-11-12 02:15:25,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092817531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:25,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:25,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518502605] [2023-11-12 02:15:25,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:25,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:15:25,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:15:25,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:15:25,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 144 [2023-11-12 02:15:25,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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) [2023-11-12 02:15:25,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:25,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 144 [2023-11-12 02:15:25,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:26,004 INFO L124 PetriNetUnfolderBase]: 478/778 cut-off events. [2023-11-12 02:15:26,005 INFO L125 PetriNetUnfolderBase]: For 1325/1325 co-relation queries the response was YES. [2023-11-12 02:15:26,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 778 events. 478/778 cut-off events. For 1325/1325 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3203 event pairs, 67 based on Foata normal form. 3/781 useless extension candidates. Maximal degree in co-relation 2888. Up to 388 conditions per place. [2023-11-12 02:15:26,014 INFO L140 encePairwiseOnDemand]: 136/144 looper letters, 38 selfloop transitions, 22 changer transitions 0/60 dead transitions. [2023-11-12 02:15:26,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 511 flow [2023-11-12 02:15:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:15:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:15:26,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2023-11-12 02:15:26,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2023-11-12 02:15:26,016 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 327 transitions. [2023-11-12 02:15:26,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 327 transitions. [2023-11-12 02:15:26,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:26,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 327 transitions. [2023-11-12 02:15:26,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2023-11-12 02:15:26,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-12 02:15:26,020 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-12 02:15:26,020 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 240 flow. Second operand 4 states and 327 transitions. [2023-11-12 02:15:26,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 511 flow [2023-11-12 02:15:26,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:26,026 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 435 flow [2023-11-12 02:15:26,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-11-12 02:15:26,027 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-11-12 02:15:26,027 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 435 flow [2023-11-12 02:15:26,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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) [2023-11-12 02:15:26,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:26,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:26,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:15:26,029 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:15:26,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:26,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2127216120, now seen corresponding path program 1 times [2023-11-12 02:15:26,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:26,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484363669] [2023-11-12 02:15:26,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:26,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:26,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:26,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484363669] [2023-11-12 02:15:26,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484363669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:26,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:26,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:26,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585902401] [2023-11-12 02:15:26,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:26,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:26,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:26,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:26,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:26,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 144 [2023-11-12 02:15:26,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 435 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-11-12 02:15:26,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:26,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 144 [2023-11-12 02:15:26,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:26,331 INFO L124 PetriNetUnfolderBase]: 378/654 cut-off events. [2023-11-12 02:15:26,331 INFO L125 PetriNetUnfolderBase]: For 2032/2070 co-relation queries the response was YES. [2023-11-12 02:15:26,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2779 conditions, 654 events. 378/654 cut-off events. For 2032/2070 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2874 event pairs, 184 based on Foata normal form. 16/663 useless extension candidates. Maximal degree in co-relation 2756. Up to 430 conditions per place. [2023-11-12 02:15:26,340 INFO L140 encePairwiseOnDemand]: 141/144 looper letters, 32 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2023-11-12 02:15:26,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 575 flow [2023-11-12 02:15:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-11-12 02:15:26,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5949074074074074 [2023-11-12 02:15:26,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-11-12 02:15:26,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-11-12 02:15:26,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:26,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-11-12 02:15:26,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2023-11-12 02:15:26,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-12 02:15:26,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-12 02:15:26,347 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 435 flow. Second operand 3 states and 257 transitions. [2023-11-12 02:15:26,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 575 flow [2023-11-12 02:15:26,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 575 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:15:26,358 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 464 flow [2023-11-12 02:15:26,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-11-12 02:15:26,360 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2023-11-12 02:15:26,360 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 464 flow [2023-11-12 02:15:26,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-11-12 02:15:26,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:26,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:26,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:15:26,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:15:26,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:26,362 INFO L85 PathProgramCache]: Analyzing trace with hash -780370528, now seen corresponding path program 1 times [2023-11-12 02:15:26,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:26,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211324640] [2023-11-12 02:15:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:26,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:26,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:26,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211324640] [2023-11-12 02:15:26,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211324640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:26,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:26,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:26,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857971575] [2023-11-12 02:15:26,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:26,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:15:26,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:26,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:15:26,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:15:26,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 144 [2023-11-12 02:15:26,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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) [2023-11-12 02:15:26,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:26,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 144 [2023-11-12 02:15:26,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:26,661 INFO L124 PetriNetUnfolderBase]: 320/601 cut-off events. [2023-11-12 02:15:26,661 INFO L125 PetriNetUnfolderBase]: For 3314/3403 co-relation queries the response was YES. [2023-11-12 02:15:26,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2535 conditions, 601 events. 320/601 cut-off events. For 3314/3403 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3116 event pairs, 44 based on Foata normal form. 79/672 useless extension candidates. Maximal degree in co-relation 2510. Up to 296 conditions per place. [2023-11-12 02:15:26,669 INFO L140 encePairwiseOnDemand]: 138/144 looper letters, 67 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2023-11-12 02:15:26,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 91 transitions, 1065 flow [2023-11-12 02:15:26,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:15:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:15:26,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2023-11-12 02:15:26,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2023-11-12 02:15:26,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 414 transitions. [2023-11-12 02:15:26,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 414 transitions. [2023-11-12 02:15:26,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:26,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 414 transitions. [2023-11-12 02:15:26,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 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) [2023-11-12 02:15:26,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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) [2023-11-12 02:15:26,678 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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) [2023-11-12 02:15:26,679 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 464 flow. Second operand 5 states and 414 transitions. [2023-11-12 02:15:26,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 91 transitions, 1065 flow [2023-11-12 02:15:26,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 91 transitions, 1031 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:26,690 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 506 flow [2023-11-12 02:15:26,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=506, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2023-11-12 02:15:26,691 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-11-12 02:15:26,691 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 506 flow [2023-11-12 02:15:26,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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) [2023-11-12 02:15:26,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:26,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:26,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:15:26,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:15:26,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:26,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1881911671, now seen corresponding path program 1 times [2023-11-12 02:15:26,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:26,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699533405] [2023-11-12 02:15:26,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:26,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:26,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:26,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699533405] [2023-11-12 02:15:26,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699533405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:26,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:26,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:26,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160313075] [2023-11-12 02:15:26,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:26,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:15:26,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:26,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:15:26,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:15:26,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 144 [2023-11-12 02:15:26,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 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) [2023-11-12 02:15:26,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:26,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 144 [2023-11-12 02:15:26,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:27,040 INFO L124 PetriNetUnfolderBase]: 285/561 cut-off events. [2023-11-12 02:15:27,040 INFO L125 PetriNetUnfolderBase]: For 3352/3565 co-relation queries the response was YES. [2023-11-12 02:15:27,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 561 events. 285/561 cut-off events. For 3352/3565 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3024 event pairs, 15 based on Foata normal form. 152/705 useless extension candidates. Maximal degree in co-relation 2769. Up to 246 conditions per place. [2023-11-12 02:15:27,047 INFO L140 encePairwiseOnDemand]: 138/144 looper letters, 73 selfloop transitions, 15 changer transitions 6/110 dead transitions. [2023-11-12 02:15:27,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 110 transitions, 1277 flow [2023-11-12 02:15:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:15:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:15:27,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2023-11-12 02:15:27,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5744047619047619 [2023-11-12 02:15:27,051 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2023-11-12 02:15:27,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2023-11-12 02:15:27,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:27,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2023-11-12 02:15:27,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 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) [2023-11-12 02:15:27,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 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) [2023-11-12 02:15:27,057 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 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) [2023-11-12 02:15:27,058 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 506 flow. Second operand 7 states and 579 transitions. [2023-11-12 02:15:27,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 110 transitions, 1277 flow [2023-11-12 02:15:27,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 110 transitions, 1273 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:27,067 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 601 flow [2023-11-12 02:15:27,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=601, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-11-12 02:15:27,068 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 31 predicate places. [2023-11-12 02:15:27,068 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 601 flow [2023-11-12 02:15:27,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 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) [2023-11-12 02:15:27,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:27,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:27,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:15:27,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:15:27,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1744717022, now seen corresponding path program 1 times [2023-11-12 02:15:27,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:27,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119712876] [2023-11-12 02:15:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:27,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:27,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:27,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119712876] [2023-11-12 02:15:27,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119712876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:27,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:27,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:27,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474327858] [2023-11-12 02:15:27,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:27,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:15:27,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:27,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:15:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:15:27,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 144 [2023-11-12 02:15:27,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 601 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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) [2023-11-12 02:15:27,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:27,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 144 [2023-11-12 02:15:27,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:27,412 INFO L124 PetriNetUnfolderBase]: 512/936 cut-off events. [2023-11-12 02:15:27,412 INFO L125 PetriNetUnfolderBase]: For 6140/6140 co-relation queries the response was YES. [2023-11-12 02:15:27,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5534 conditions, 936 events. 512/936 cut-off events. For 6140/6140 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4761 event pairs, 87 based on Foata normal form. 6/942 useless extension candidates. Maximal degree in co-relation 5501. Up to 390 conditions per place. [2023-11-12 02:15:27,420 INFO L140 encePairwiseOnDemand]: 136/144 looper letters, 41 selfloop transitions, 26 changer transitions 34/101 dead transitions. [2023-11-12 02:15:27,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 101 transitions, 1162 flow [2023-11-12 02:15:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:15:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:15:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2023-11-12 02:15:27,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-11-12 02:15:27,423 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 324 transitions. [2023-11-12 02:15:27,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 324 transitions. [2023-11-12 02:15:27,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:27,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 324 transitions. [2023-11-12 02:15:27,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2023-11-12 02:15:27,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-12 02:15:27,428 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-12 02:15:27,428 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 601 flow. Second operand 4 states and 324 transitions. [2023-11-12 02:15:27,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 101 transitions, 1162 flow [2023-11-12 02:15:27,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 1059 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:27,449 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 592 flow [2023-11-12 02:15:27,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2023-11-12 02:15:27,450 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 34 predicate places. [2023-11-12 02:15:27,451 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 592 flow [2023-11-12 02:15:27,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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) [2023-11-12 02:15:27,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:27,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:27,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:15:27,452 INFO L420 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)] === [2023-11-12 02:15:27,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:27,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1149948550, now seen corresponding path program 1 times [2023-11-12 02:15:27,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:27,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968076413] [2023-11-12 02:15:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:27,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:27,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:27,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968076413] [2023-11-12 02:15:27,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968076413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:27,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:27,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:15:27,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650874422] [2023-11-12 02:15:27,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:27,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:15:27,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:15:27,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:15:27,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 144 [2023-11-12 02:15:27,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 592 flow. Second operand has 6 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 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) [2023-11-12 02:15:27,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:27,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 144 [2023-11-12 02:15:27,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:27,727 INFO L124 PetriNetUnfolderBase]: 145/317 cut-off events. [2023-11-12 02:15:27,727 INFO L125 PetriNetUnfolderBase]: For 1897/1969 co-relation queries the response was YES. [2023-11-12 02:15:27,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1749 conditions, 317 events. 145/317 cut-off events. For 1897/1969 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1482 event pairs, 12 based on Foata normal form. 45/352 useless extension candidates. Maximal degree in co-relation 1714. Up to 100 conditions per place. [2023-11-12 02:15:27,730 INFO L140 encePairwiseOnDemand]: 138/144 looper letters, 19 selfloop transitions, 10 changer transitions 40/77 dead transitions. [2023-11-12 02:15:27,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 1007 flow [2023-11-12 02:15:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:15:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:15:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 566 transitions. [2023-11-12 02:15:27,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615079365079365 [2023-11-12 02:15:27,733 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 566 transitions. [2023-11-12 02:15:27,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 566 transitions. [2023-11-12 02:15:27,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:27,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 566 transitions. [2023-11-12 02:15:27,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.85714285714286) internal successors, (566), 7 states have internal predecessors, (566), 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) [2023-11-12 02:15:27,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 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) [2023-11-12 02:15:27,739 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 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) [2023-11-12 02:15:27,739 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 592 flow. Second operand 7 states and 566 transitions. [2023-11-12 02:15:27,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 1007 flow [2023-11-12 02:15:27,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 981 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-12 02:15:27,748 INFO L231 Difference]: Finished difference. Result has 63 places, 32 transitions, 375 flow [2023-11-12 02:15:27,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=63, PETRI_TRANSITIONS=32} [2023-11-12 02:15:27,750 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 36 predicate places. [2023-11-12 02:15:27,750 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 32 transitions, 375 flow [2023-11-12 02:15:27,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 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) [2023-11-12 02:15:27,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:27,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:27,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:15:27,751 INFO L420 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)] === [2023-11-12 02:15:27,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash 422951329, now seen corresponding path program 1 times [2023-11-12 02:15:27,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:27,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083199273] [2023-11-12 02:15:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:27,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:27,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:27,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083199273] [2023-11-12 02:15:27,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083199273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:27,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:27,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:27,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698885387] [2023-11-12 02:15:27,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:27,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:15:27,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:27,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:15:27,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:15:27,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 144 [2023-11-12 02:15:27,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 32 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2023-11-12 02:15:27,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:27,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 144 [2023-11-12 02:15:27,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:27,942 INFO L124 PetriNetUnfolderBase]: 44/116 cut-off events. [2023-11-12 02:15:27,942 INFO L125 PetriNetUnfolderBase]: For 694/700 co-relation queries the response was YES. [2023-11-12 02:15:27,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 116 events. 44/116 cut-off events. For 694/700 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 380 event pairs, 5 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 735. Up to 65 conditions per place. [2023-11-12 02:15:27,944 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 20 selfloop transitions, 3 changer transitions 25/50 dead transitions. [2023-11-12 02:15:27,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 50 transitions, 623 flow [2023-11-12 02:15:27,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:15:27,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:15:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-11-12 02:15:27,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2023-11-12 02:15:27,947 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-11-12 02:15:27,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-11-12 02:15:27,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:27,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-11-12 02:15:27,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-12 02:15:27,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-12 02:15:27,951 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-12 02:15:27,951 INFO L175 Difference]: Start difference. First operand has 63 places, 32 transitions, 375 flow. Second operand 4 states and 332 transitions. [2023-11-12 02:15:27,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 50 transitions, 623 flow [2023-11-12 02:15:27,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 460 flow, removed 20 selfloop flow, removed 18 redundant places. [2023-11-12 02:15:27,957 INFO L231 Difference]: Finished difference. Result has 47 places, 23 transitions, 172 flow [2023-11-12 02:15:27,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=47, PETRI_TRANSITIONS=23} [2023-11-12 02:15:27,958 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-11-12 02:15:27,958 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 23 transitions, 172 flow [2023-11-12 02:15:27,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2023-11-12 02:15:27,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:27,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:27,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:15:27,959 INFO L420 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)] === [2023-11-12 02:15:27,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:27,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1055535391, now seen corresponding path program 2 times [2023-11-12 02:15:27,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:27,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864944455] [2023-11-12 02:15:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:27,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:28,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:28,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864944455] [2023-11-12 02:15:28,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864944455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:28,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:28,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:28,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696748111] [2023-11-12 02:15:28,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:28,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:15:28,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:28,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:15:28,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:15:28,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 144 [2023-11-12 02:15:28,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 23 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2023-11-12 02:15:28,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:28,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 144 [2023-11-12 02:15:28,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:28,157 INFO L124 PetriNetUnfolderBase]: 12/38 cut-off events. [2023-11-12 02:15:28,157 INFO L125 PetriNetUnfolderBase]: For 127/129 co-relation queries the response was YES. [2023-11-12 02:15:28,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 38 events. 12/38 cut-off events. For 127/129 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 1 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 179. Up to 17 conditions per place. [2023-11-12 02:15:28,158 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-11-12 02:15:28,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 28 transitions, 248 flow [2023-11-12 02:15:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:15:28,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:15:28,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2023-11-12 02:15:28,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541666666666667 [2023-11-12 02:15:28,161 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2023-11-12 02:15:28,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2023-11-12 02:15:28,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:28,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2023-11-12 02:15:28,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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) [2023-11-12 02:15:28,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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) [2023-11-12 02:15:28,166 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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) [2023-11-12 02:15:28,166 INFO L175 Difference]: Start difference. First operand has 47 places, 23 transitions, 172 flow. Second operand 5 states and 399 transitions. [2023-11-12 02:15:28,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 28 transitions, 248 flow [2023-11-12 02:15:28,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 178 flow, removed 2 selfloop flow, removed 15 redundant places. [2023-11-12 02:15:28,168 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-11-12 02:15:28,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-11-12 02:15:28,169 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-11-12 02:15:28,169 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-11-12 02:15:28,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2023-11-12 02:15:28,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-12 02:15:28,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-12 02:15:28,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-12 02:15:28,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-12 02:15:28,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:15:28,174 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:28,177 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:15:28,177 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:15:28,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:15:28 BasicIcfg [2023-11-12 02:15:28,181 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:15:28,181 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:15:28,182 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:15:28,182 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:15:28,182 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:20" (3/4) ... [2023-11-12 02:15:28,184 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:15:28,189 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-12 02:15:28,189 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-12 02:15:28,189 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-12 02:15:28,196 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-12 02:15:28,197 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:15:28,197 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:15:28,197 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:15:28,291 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:15:28,291 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:15:28,292 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:15:28,297 INFO L158 Benchmark]: Toolchain (without parser) took 8696.08ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 130.8MB in the beginning and 164.5MB in the end (delta: -33.7MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2023-11-12 02:15:28,298 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 123.7MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:15:28,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.72ms. Allocated memory is still 163.6MB. Free memory was 130.8MB in the beginning and 109.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 02:15:28,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.58ms. Allocated memory is still 163.6MB. Free memory was 109.8MB in the beginning and 107.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:15:28,299 INFO L158 Benchmark]: Boogie Preprocessor took 58.64ms. Allocated memory is still 163.6MB. Free memory was 107.7MB in the beginning and 106.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:15:28,300 INFO L158 Benchmark]: RCFGBuilder took 552.74ms. Allocated memory is still 163.6MB. Free memory was 106.2MB in the beginning and 121.2MB in the end (delta: -15.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 02:15:28,301 INFO L158 Benchmark]: TraceAbstraction took 7339.91ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 120.2MB in the beginning and 168.7MB in the end (delta: -48.4MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2023-11-12 02:15:28,301 INFO L158 Benchmark]: Witness Printer took 110.30ms. Allocated memory is still 237.0MB. Free memory was 168.7MB in the beginning and 164.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:15:28,304 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 123.7MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 544.72ms. Allocated memory is still 163.6MB. Free memory was 130.8MB in the beginning and 109.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.58ms. Allocated memory is still 163.6MB. Free memory was 109.8MB in the beginning and 107.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.64ms. Allocated memory is still 163.6MB. Free memory was 107.7MB in the beginning and 106.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 552.74ms. Allocated memory is still 163.6MB. Free memory was 106.2MB in the beginning and 121.2MB in the end (delta: -15.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7339.91ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 120.2MB in the beginning and 168.7MB in the end (delta: -48.4MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Witness Printer took 110.30ms. Allocated memory is still 237.0MB. Free memory was 168.7MB in the beginning and 164.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 18 TransitionsAfterwards, 1080 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 57 TotalNumberOfCompositions, 2219 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1053, independent: 961, independent conditional: 0, independent unconditional: 961, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 585, independent: 558, independent conditional: 0, independent unconditional: 558, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1053, independent: 403, independent conditional: 0, independent unconditional: 403, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 585, unknown conditional: 0, unknown unconditional: 585] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 110 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.2s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 302 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 621 IncrementalHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 55 mSDtfsCounter, 621 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=601occurred in iteration=7, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:15:28,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_545ae470-dd08-42d2-b8fb-1a38863657e9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE