./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU --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 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:12:48,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:12:48,109 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:12:48,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:12:48,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:12:48,155 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:12:48,156 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:12:48,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:12:48,157 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:12:48,159 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:12:48,159 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:12:48,159 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:12:48,160 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:12:48,161 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:12:48,163 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:12:48,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:12:48,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:12:48,164 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:12:48,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:12:48,164 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:12:48,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:12:48,169 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:12:48,169 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:12:48,169 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:12:48,170 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:12:48,170 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:12:48,170 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:12:48,170 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:12:48,171 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:12:48,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:12:48,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:12:48,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:12:48,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:12:48,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:12:48,172 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:12:48,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:12:48,173 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:12:48,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:12:48,175 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:12:48,176 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:12:48,176 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:12:48,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:12:48,177 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_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b [2024-10-31 22:12:48,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:12:48,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:12:48,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:12:48,479 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:12:48,480 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:12:48,481 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i Unable to find full path for "g++" [2024-10-31 22:12:50,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:12:50,752 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:12:50,753 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i [2024-10-31 22:12:50,777 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/data/fe2dd6567/a13c862dab574568aba51642a01b4ee6/FLAG3e5068064 [2024-10-31 22:12:51,051 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/data/fe2dd6567/a13c862dab574568aba51642a01b4ee6 [2024-10-31 22:12:51,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:12:51,055 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:12:51,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:51,057 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:12:51,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:12:51,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:51,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b0a08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51, skipping insertion in model container [2024-10-31 22:12:51,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:51,140 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:12:51,405 WARN L251 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_03a7cf80-b013-4393-836b-a0cee7ba4336/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i[994,1007] [2024-10-31 22:12:51,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:51,766 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:12:51,781 WARN L251 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_03a7cf80-b013-4393-836b-a0cee7ba4336/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i[994,1007] [2024-10-31 22:12:51,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:51,922 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:12:51,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51 WrapperNode [2024-10-31 22:12:51,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:51,924 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:51,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:12:51,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:12:51,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:51,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:52,008 INFO L138 Inliner]: procedures = 176, calls = 72, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 179 [2024-10-31 22:12:52,008 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:52,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:12:52,013 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:12:52,013 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:12:52,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:52,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:52,036 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:52,061 INFO L175 MemorySlicer]: Split 26 memory accesses to 2 slices as follows [2, 24]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 8 writes are split as follows [0, 8]. [2024-10-31 22:12:52,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:52,066 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:52,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:52,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:52,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:52,098 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:52,105 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:12:52,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:12:52,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:12:52,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:12:52,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (1/1) ... [2024-10-31 22:12:52,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:12:52,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:52,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:52,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a7cf80-b013-4393-836b-a0cee7ba4336/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:12:52,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:12:52,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:12:52,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:12:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:12:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:12:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:12:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:12:52,203 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:12:52,204 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:12:52,204 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:12:52,204 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:12:52,204 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:12:52,204 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-31 22:12:52,204 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-31 22:12:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:12:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:12:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:12:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:12:52,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:12:52,209 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:12:52,395 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:12:52,397 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:12:53,123 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:12:53,123 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:12:53,783 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:12:53,783 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:12:53,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:53 BoogieIcfgContainer [2024-10-31 22:12:53,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:12:53,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:12:53,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:12:53,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:12:53,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:12:51" (1/3) ... [2024-10-31 22:12:53,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3383b70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:53, skipping insertion in model container [2024-10-31 22:12:53,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:51" (2/3) ... [2024-10-31 22:12:53,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3383b70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:53, skipping insertion in model container [2024-10-31 22:12:53,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:53" (3/3) ... [2024-10-31 22:12:53,796 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_power.opt.i [2024-10-31 22:12:53,817 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:12:53,818 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:12:53,818 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:12:53,927 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:12:53,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 46 transitions, 108 flow [2024-10-31 22:12:54,016 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-10-31 22:12:54,017 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:54,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 1/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-10-31 22:12:54,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 46 transitions, 108 flow [2024-10-31 22:12:54,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 42 transitions, 96 flow [2024-10-31 22:12:54,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:12:54,050 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@561b030, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:12:54,050 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-31 22:12:54,086 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:12:54,086 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-31 22:12:54,087 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:54,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:54,088 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:12:54,088 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:54,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:54,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1478628200, now seen corresponding path program 1 times [2024-10-31 22:12:54,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:54,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620722625] [2024-10-31 22:12:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:54,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:54,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:54,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620722625] [2024-10-31 22:12:54,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620722625] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:54,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:54,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:12:54,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144957641] [2024-10-31 22:12:54,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:54,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:12:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:54,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:12:54,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:12:54,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 46 [2024-10-31 22:12:54,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:54,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:54,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 46 [2024-10-31 22:12:54,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:56,803 INFO L124 PetriNetUnfolderBase]: 2959/4656 cut-off events. [2024-10-31 22:12:56,804 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-10-31 22:12:56,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8884 conditions, 4656 events. 2959/4656 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 29795 event pairs, 868 based on Foata normal form. 144/4715 useless extension candidates. Maximal degree in co-relation 8872. Up to 3274 conditions per place. [2024-10-31 22:12:56,847 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 37 selfloop transitions, 2 changer transitions 2/57 dead transitions. [2024-10-31 22:12:56,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 214 flow [2024-10-31 22:12:56,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:12:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:12:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-10-31 22:12:56,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7536231884057971 [2024-10-31 22:12:56,863 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 3 states and 104 transitions. [2024-10-31 22:12:56,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 214 flow [2024-10-31 22:12:56,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:12:56,871 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 90 flow [2024-10-31 22:12:56,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-10-31 22:12:56,877 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2024-10-31 22:12:56,877 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 90 flow [2024-10-31 22:12:56,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:56,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:56,878 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:56,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:12:56,879 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:56,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash -81981778, now seen corresponding path program 1 times [2024-10-31 22:12:56,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:56,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303924578] [2024-10-31 22:12:56,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:56,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:57,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:57,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303924578] [2024-10-31 22:12:57,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303924578] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:57,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:57,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:12:57,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041912182] [2024-10-31 22:12:57,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:57,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:12:57,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:57,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:12:57,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:12:57,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-10-31 22:12:57,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:57,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:57,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-10-31 22:12:57,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:00,598 INFO L124 PetriNetUnfolderBase]: 5559/8466 cut-off events. [2024-10-31 22:13:00,598 INFO L125 PetriNetUnfolderBase]: For 520/520 co-relation queries the response was YES. [2024-10-31 22:13:00,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16808 conditions, 8466 events. 5559/8466 cut-off events. For 520/520 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 55560 event pairs, 759 based on Foata normal form. 0/8228 useless extension candidates. Maximal degree in co-relation 16798. Up to 4327 conditions per place. [2024-10-31 22:13:00,665 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 40 selfloop transitions, 2 changer transitions 54/109 dead transitions. [2024-10-31 22:13:00,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 109 transitions, 440 flow [2024-10-31 22:13:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:13:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:13:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 234 transitions. [2024-10-31 22:13:00,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6358695652173914 [2024-10-31 22:13:00,669 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 90 flow. Second operand 8 states and 234 transitions. [2024-10-31 22:13:00,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 109 transitions, 440 flow [2024-10-31 22:13:00,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 424 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:13:00,673 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 100 flow [2024-10-31 22:13:00,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2024-10-31 22:13:00,674 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-10-31 22:13:00,675 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 100 flow [2024-10-31 22:13:00,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:00,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:00,676 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:00,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:13:00,676 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:13:00,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1261304017, now seen corresponding path program 1 times [2024-10-31 22:13:00,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:00,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317004516] [2024-10-31 22:13:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:00,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:01,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:01,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317004516] [2024-10-31 22:13:01,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317004516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:01,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:01,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:13:01,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130293395] [2024-10-31 22:13:01,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:01,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:01,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:01,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:01,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:01,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-10-31 22:13:01,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:01,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:01,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-10-31 22:13:01,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:04,768 INFO L124 PetriNetUnfolderBase]: 6991/10551 cut-off events. [2024-10-31 22:13:04,769 INFO L125 PetriNetUnfolderBase]: For 1210/1210 co-relation queries the response was YES. [2024-10-31 22:13:04,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22198 conditions, 10551 events. 6991/10551 cut-off events. For 1210/1210 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 69295 event pairs, 1143 based on Foata normal form. 192/10571 useless extension candidates. Maximal degree in co-relation 22183. Up to 3913 conditions per place. [2024-10-31 22:13:04,850 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 43 selfloop transitions, 3 changer transitions 47/105 dead transitions. [2024-10-31 22:13:04,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 105 transitions, 435 flow [2024-10-31 22:13:04,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:13:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:13:04,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-10-31 22:13:04,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6059782608695652 [2024-10-31 22:13:04,856 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 100 flow. Second operand 8 states and 223 transitions. [2024-10-31 22:13:04,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 105 transitions, 435 flow [2024-10-31 22:13:04,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 105 transitions, 413 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-31 22:13:05,001 INFO L231 Difference]: Finished difference. Result has 61 places, 38 transitions, 110 flow [2024-10-31 22:13:05,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=110, PETRI_PLACES=61, PETRI_TRANSITIONS=38} [2024-10-31 22:13:05,002 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-10-31 22:13:05,002 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 38 transitions, 110 flow [2024-10-31 22:13:05,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:05,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:05,003 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:05,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:13:05,004 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:13:05,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:05,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1844854172, now seen corresponding path program 1 times [2024-10-31 22:13:05,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:05,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59423192] [2024-10-31 22:13:05,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:05,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:05,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:05,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59423192] [2024-10-31 22:13:05,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59423192] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:05,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:05,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:13:05,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618252862] [2024-10-31 22:13:05,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:05,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:13:05,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:05,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:13:05,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:13:05,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-10-31 22:13:05,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 38 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:05,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:05,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-10-31 22:13:05,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:07,530 INFO L124 PetriNetUnfolderBase]: 3142/4932 cut-off events. [2024-10-31 22:13:07,530 INFO L125 PetriNetUnfolderBase]: For 1480/1496 co-relation queries the response was YES. [2024-10-31 22:13:07,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10532 conditions, 4932 events. 3142/4932 cut-off events. For 1480/1496 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 31375 event pairs, 493 based on Foata normal form. 144/5028 useless extension candidates. Maximal degree in co-relation 10515. Up to 2938 conditions per place. [2024-10-31 22:13:07,580 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 34 selfloop transitions, 2 changer transitions 37/87 dead transitions. [2024-10-31 22:13:07,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 87 transitions, 370 flow [2024-10-31 22:13:07,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:13:07,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:13:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2024-10-31 22:13:07,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6242236024844721 [2024-10-31 22:13:07,584 INFO L175 Difference]: Start difference. First operand has 61 places, 38 transitions, 110 flow. Second operand 7 states and 201 transitions. [2024-10-31 22:13:07,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 87 transitions, 370 flow [2024-10-31 22:13:07,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 87 transitions, 338 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-10-31 22:13:07,631 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 106 flow [2024-10-31 22:13:07,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2024-10-31 22:13:07,632 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-10-31 22:13:07,632 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 106 flow [2024-10-31 22:13:07,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:07,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:07,633 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:07,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:13:07,633 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:13:07,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:07,634 INFO L85 PathProgramCache]: Analyzing trace with hash -917134447, now seen corresponding path program 1 times [2024-10-31 22:13:07,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:07,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163193591] [2024-10-31 22:13:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:07,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:09,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:09,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163193591] [2024-10-31 22:13:09,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163193591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:09,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:09,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:13:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102212734] [2024-10-31 22:13:09,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:09,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:09,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:09,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:09,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:09,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-10-31 22:13:09,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:09,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:09,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-10-31 22:13:09,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:11,641 INFO L124 PetriNetUnfolderBase]: 3166/4953 cut-off events. [2024-10-31 22:13:11,641 INFO L125 PetriNetUnfolderBase]: For 1235/1235 co-relation queries the response was YES. [2024-10-31 22:13:11,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10591 conditions, 4953 events. 3166/4953 cut-off events. For 1235/1235 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 31327 event pairs, 592 based on Foata normal form. 134/5073 useless extension candidates. Maximal degree in co-relation 10575. Up to 2763 conditions per place. [2024-10-31 22:13:11,678 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 51 selfloop transitions, 9 changer transitions 49/123 dead transitions. [2024-10-31 22:13:11,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 123 transitions, 525 flow [2024-10-31 22:13:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:13:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:13:11,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 310 transitions. [2024-10-31 22:13:11,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6126482213438735 [2024-10-31 22:13:11,681 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 106 flow. Second operand 11 states and 310 transitions. [2024-10-31 22:13:11,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 123 transitions, 525 flow [2024-10-31 22:13:11,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 123 transitions, 499 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-10-31 22:13:11,701 INFO L231 Difference]: Finished difference. Result has 69 places, 45 transitions, 182 flow [2024-10-31 22:13:11,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=182, PETRI_PLACES=69, PETRI_TRANSITIONS=45} [2024-10-31 22:13:11,702 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-10-31 22:13:11,702 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 45 transitions, 182 flow [2024-10-31 22:13:11,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:11,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:11,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:11,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:13:11,704 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:13:11,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:11,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1099724811, now seen corresponding path program 1 times [2024-10-31 22:13:11,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:11,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960191487] [2024-10-31 22:13:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:11,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:11,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:11,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960191487] [2024-10-31 22:13:11,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960191487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:11,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:11,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:13:11,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982929248] [2024-10-31 22:13:11,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:11,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:13:11,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:11,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:13:11,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:13:11,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-10-31 22:13:11,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 45 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:11,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:11,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-10-31 22:13:11,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:14,628 INFO L124 PetriNetUnfolderBase]: 9011/12736 cut-off events. [2024-10-31 22:13:14,628 INFO L125 PetriNetUnfolderBase]: For 17886/18176 co-relation queries the response was YES. [2024-10-31 22:13:14,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39103 conditions, 12736 events. 9011/12736 cut-off events. For 17886/18176 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 74535 event pairs, 1015 based on Foata normal form. 466/13089 useless extension candidates. Maximal degree in co-relation 39082. Up to 7189 conditions per place. [2024-10-31 22:13:14,740 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 70 selfloop transitions, 6 changer transitions 1/87 dead transitions. [2024-10-31 22:13:14,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 87 transitions, 526 flow [2024-10-31 22:13:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:13:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:13:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-10-31 22:13:14,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-10-31 22:13:14,742 INFO L175 Difference]: Start difference. First operand has 69 places, 45 transitions, 182 flow. Second operand 4 states and 120 transitions. [2024-10-31 22:13:14,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 87 transitions, 526 flow [2024-10-31 22:13:14,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 87 transitions, 501 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-31 22:13:14,855 INFO L231 Difference]: Finished difference. Result has 63 places, 49 transitions, 209 flow [2024-10-31 22:13:14,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2024-10-31 22:13:14,857 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-10-31 22:13:14,859 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 209 flow [2024-10-31 22:13:14,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:14,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:14,859 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:14,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:13:14,860 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:13:14,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1506620308, now seen corresponding path program 1 times [2024-10-31 22:13:14,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:14,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583826735] [2024-10-31 22:13:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:14,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:15,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:15,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583826735] [2024-10-31 22:13:15,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583826735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:15,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:15,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:13:15,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333362848] [2024-10-31 22:13:15,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:15,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:13:15,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:15,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:13:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:13:15,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-10-31 22:13:15,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:15,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:15,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-10-31 22:13:15,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:16,997 INFO L124 PetriNetUnfolderBase]: 6923/9916 cut-off events. [2024-10-31 22:13:16,998 INFO L125 PetriNetUnfolderBase]: For 14627/14890 co-relation queries the response was YES. [2024-10-31 22:13:17,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31840 conditions, 9916 events. 6923/9916 cut-off events. For 14627/14890 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 55951 event pairs, 429 based on Foata normal form. 431/10255 useless extension candidates. Maximal degree in co-relation 31820. Up to 4573 conditions per place. [2024-10-31 22:13:17,074 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 89 selfloop transitions, 10 changer transitions 1/110 dead transitions. [2024-10-31 22:13:17,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 110 transitions, 694 flow [2024-10-31 22:13:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:13:17,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:13:17,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-10-31 22:13:17,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6608695652173913 [2024-10-31 22:13:17,078 INFO L175 Difference]: Start difference. First operand has 63 places, 49 transitions, 209 flow. Second operand 5 states and 152 transitions. [2024-10-31 22:13:17,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 110 transitions, 694 flow [2024-10-31 22:13:17,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 110 transitions, 683 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-31 22:13:17,088 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 261 flow [2024-10-31 22:13:17,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2024-10-31 22:13:17,089 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-10-31 22:13:17,090 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 261 flow [2024-10-31 22:13:17,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:17,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:17,090 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:17,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:13:17,091 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:13:17,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:17,091 INFO L85 PathProgramCache]: Analyzing trace with hash 699878809, now seen corresponding path program 1 times [2024-10-31 22:13:17,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:17,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412950795] [2024-10-31 22:13:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:17,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:17,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:17,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412950795] [2024-10-31 22:13:17,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412950795] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:17,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:17,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:13:17,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388158432] [2024-10-31 22:13:17,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:17,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:17,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:17,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:17,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:17,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-10-31 22:13:17,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:17,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:17,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-10-31 22:13:17,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand