./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe028_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/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_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe028_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d78821bc3a287b999f98be361d707254bd2fa61b63b525cf42d392168336d80 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:10:27,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:27,547 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:10:27,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:27,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:27,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:27,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:27,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:27,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:10:27,594 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:10:27,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:10:27,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:10:27,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:27,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:27,597 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:27,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:27,601 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:27,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:10:27,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:27,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:27,602 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:10:27,604 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:10:27,605 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:10:27,605 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:10:27,605 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:10:27,605 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:27,606 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:10:27,606 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:27,606 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:27,607 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:27,607 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:27,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:10:27,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:10:27,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:27,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:27,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:10:27,610 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:10:27,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:10:27,610 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:10:27,611 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:10:27,611 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:10:27,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:10:27,612 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_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d78821bc3a287b999f98be361d707254bd2fa61b63b525cf42d392168336d80 [2024-10-31 22:10:27,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:27,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:27,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:27,976 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:27,976 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:27,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe028_power.i Unable to find full path for "g++" [2024-10-31 22:10:30,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:30,762 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:30,764 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/sv-benchmarks/c/pthread-wmm/safe028_power.i [2024-10-31 22:10:30,781 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU/data/cf3bc8f7c/96f519e024424c28a61344b4a712d407/FLAG905a1f4b4 [2024-10-31 22:10:30,892 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU/data/cf3bc8f7c/96f519e024424c28a61344b4a712d407 [2024-10-31 22:10:30,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:30,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:30,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:30,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:30,918 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:30,919 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,921 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19dc31db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30, skipping insertion in model container [2024-10-31 22:10:30,921 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:31,019 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:31,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:31,534 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:31,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:31,685 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:31,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31 WrapperNode [2024-10-31 22:10:31,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:31,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:31,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:31,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:31,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (1/1) ... [2024-10-31 22:10:31,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (1/1) ... [2024-10-31 22:10:31,776 INFO L138 Inliner]: procedures = 175, calls = 66, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 170 [2024-10-31 22:10:31,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:31,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:31,780 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:31,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:31,794 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (1/1) ... [2024-10-31 22:10:31,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (1/1) ... [2024-10-31 22:10:31,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (1/1) ... [2024-10-31 22:10:31,840 INFO L175 MemorySlicer]: Split 24 memory accesses to 2 slices as follows [2, 22]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2024-10-31 22:10:31,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (1/1) ... [2024-10-31 22:10:31,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (1/1) ... [2024-10-31 22:10:31,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (1/1) ... [2024-10-31 22:10:31,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (1/1) ... [2024-10-31 22:10:31,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (1/1) ... [2024-10-31 22:10:31,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (1/1) ... [2024-10-31 22:10:31,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:31,885 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:31,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:31,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:31,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (1/1) ... [2024-10-31 22:10:31,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:31,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:31,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:31,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bfc366-1017-464a-b4cd-1b7c2c8076f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:31,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:10:31,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:10:31,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:10:31,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:10:31,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:10:31,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:10:31,968 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:10:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:10:31,968 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:10:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:10:31,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:10:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:10:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:10:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:10:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:31,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:31,973 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 22:10:32,182 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:32,184 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:32,994 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:10:32,995 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:33,909 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:33,910 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:10:33,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:33 BoogieIcfgContainer [2024-10-31 22:10:33,911 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:33,913 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:33,914 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:33,918 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:33,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:10:30" (1/3) ... [2024-10-31 22:10:33,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef36e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:33, skipping insertion in model container [2024-10-31 22:10:33,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:31" (2/3) ... [2024-10-31 22:10:33,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef36e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:33, skipping insertion in model container [2024-10-31 22:10:33,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:33" (3/3) ... [2024-10-31 22:10:33,923 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_power.i [2024-10-31 22:10:33,944 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:33,945 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2024-10-31 22:10:33,945 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:10:34,165 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:10:34,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 184 flow [2024-10-31 22:10:34,301 INFO L124 PetriNetUnfolderBase]: 2/83 cut-off events. [2024-10-31 22:10:34,302 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:34,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 365 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2024-10-31 22:10:34,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 184 flow [2024-10-31 22:10:34,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 83 transitions, 175 flow [2024-10-31 22:10:34,335 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:34,346 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=None, 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;@6cb9e850, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:34,347 INFO L334 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2024-10-31 22:10:34,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:34,355 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-10-31 22:10:34,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:34,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:34,357 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:10:34,357 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-31 22:10:34,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:34,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1289428043, now seen corresponding path program 1 times [2024-10-31 22:10:34,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:34,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893315102] [2024-10-31 22:10:34,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:34,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:35,034 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 22:10:35,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:35,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893315102] [2024-10-31 22:10:35,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893315102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:35,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:35,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:10:35,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689497588] [2024-10-31 22:10:35,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:35,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:35,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 86 [2024-10-31 22:10:35,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:35,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:35,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 86 [2024-10-31 22:10:35,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:41,738 INFO L124 PetriNetUnfolderBase]: 15193/22319 cut-off events. [2024-10-31 22:10:41,738 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-10-31 22:10:41,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43700 conditions, 22319 events. 15193/22319 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 2288. Compared 196883 event pairs, 1242 based on Foata normal form. 800/11624 useless extension candidates. Maximal degree in co-relation 43689. Up to 19272 conditions per place. [2024-10-31 22:10:41,923 INFO L140 encePairwiseOnDemand]: 57/86 looper letters, 67 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2024-10-31 22:10:41,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 84 transitions, 318 flow [2024-10-31 22:10:41,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:41,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-10-31 22:10:41,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6821705426356589 [2024-10-31 22:10:41,940 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 175 flow. Second operand 3 states and 176 transitions. [2024-10-31 22:10:41,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 84 transitions, 318 flow [2024-10-31 22:10:41,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 314 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:10:41,952 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 120 flow [2024-10-31 22:10:41,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-10-31 22:10:41,958 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -27 predicate places. [2024-10-31 22:10:41,958 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 120 flow [2024-10-31 22:10:41,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:41,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:41,959 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:10:41,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:41,960 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-31 22:10:41,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:41,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1287578662, now seen corresponding path program 1 times [2024-10-31 22:10:41,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:41,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031835163] [2024-10-31 22:10:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:41,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:42,103 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 22:10:42,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:42,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031835163] [2024-10-31 22:10:42,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031835163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:42,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:42,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:10:42,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760118530] [2024-10-31 22:10:42,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:42,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:42,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:42,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:42,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:42,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 86 [2024-10-31 22:10:42,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 22:10:42,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:42,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 86 [2024-10-31 22:10:42,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:44,497 INFO L124 PetriNetUnfolderBase]: 5245/8339 cut-off events. [2024-10-31 22:10:44,497 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2024-10-31 22:10:44,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16259 conditions, 8339 events. 5245/8339 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 67471 event pairs, 5245 based on Foata normal form. 0/5295 useless extension candidates. Maximal degree in co-relation 16249. Up to 7486 conditions per place. [2024-10-31 22:10:44,561 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 31 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2024-10-31 22:10:44,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 47 transitions, 168 flow [2024-10-31 22:10:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-10-31 22:10:44,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3643410852713178 [2024-10-31 22:10:44,565 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 120 flow. Second operand 3 states and 94 transitions. [2024-10-31 22:10:44,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 47 transitions, 168 flow [2024-10-31 22:10:44,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 47 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:44,569 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 102 flow [2024-10-31 22:10:44,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-10-31 22:10:44,571 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -35 predicate places. [2024-10-31 22:10:44,572 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 102 flow [2024-10-31 22:10:44,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 22:10:44,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:44,573 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:10:44,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:10:44,574 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-31 22:10:44,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:44,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1287578661, now seen corresponding path program 1 times [2024-10-31 22:10:44,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:44,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945300019] [2024-10-31 22:10:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:44,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:44,750 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 22:10:44,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:44,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945300019] [2024-10-31 22:10:44,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945300019] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:44,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:44,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:10:44,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109210460] [2024-10-31 22:10:44,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:44,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:44,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:44,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:44,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:44,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 86 [2024-10-31 22:10:44,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 22:10:44,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:44,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 86 [2024-10-31 22:10:44,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:45,702 INFO L124 PetriNetUnfolderBase]: 1135/1978 cut-off events. [2024-10-31 22:10:45,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:45,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3708 conditions, 1978 events. 1135/1978 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13636 event pairs, 1135 based on Foata normal form. 0/1845 useless extension candidates. Maximal degree in co-relation 3702. Up to 1694 conditions per place. [2024-10-31 22:10:45,718 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 22 selfloop transitions, 1 changer transitions 1/39 dead transitions. [2024-10-31 22:10:45,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 134 flow [2024-10-31 22:10:45,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-31 22:10:45,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-10-31 22:10:45,725 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 102 flow. Second operand 3 states and 86 transitions. [2024-10-31 22:10:45,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 134 flow [2024-10-31 22:10:45,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 133 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:45,726 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 85 flow [2024-10-31 22:10:45,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-10-31 22:10:45,730 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -42 predicate places. [2024-10-31 22:10:45,731 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 85 flow [2024-10-31 22:10:45,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 22:10:45,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:45,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:45,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:10:45,733 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-31 22:10:45,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:45,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1329412796, now seen corresponding path program 1 times [2024-10-31 22:10:45,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:45,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173872085] [2024-10-31 22:10:45,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:45,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:45,926 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 22:10:45,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:45,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173872085] [2024-10-31 22:10:45,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173872085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:45,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:45,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:10:45,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16538485] [2024-10-31 22:10:45,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:45,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:45,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:45,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:45,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:45,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 86 [2024-10-31 22:10:45,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 22:10:45,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:45,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 86 [2024-10-31 22:10:45,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:46,642 INFO L124 PetriNetUnfolderBase]: 973/1735 cut-off events. [2024-10-31 22:10:46,642 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:46,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3232 conditions, 1735 events. 973/1735 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11573 event pairs, 211 based on Foata normal form. 0/1653 useless extension candidates. Maximal degree in co-relation 3225. Up to 1171 conditions per place. [2024-10-31 22:10:46,659 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-10-31 22:10:46,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 179 flow [2024-10-31 22:10:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:46,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-10-31 22:10:46,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35271317829457366 [2024-10-31 22:10:46,663 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 85 flow. Second operand 3 states and 91 transitions. [2024-10-31 22:10:46,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 179 flow [2024-10-31 22:10:46,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:46,667 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 94 flow [2024-10-31 22:10:46,668 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, 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=3, PETRI_FLOW=94, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-10-31 22:10:46,670 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -41 predicate places. [2024-10-31 22:10:46,670 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 94 flow [2024-10-31 22:10:46,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 22:10:46,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:46,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:46,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:10:46,671 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-31 22:10:46,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1960308461, now seen corresponding path program 1 times [2024-10-31 22:10:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:46,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814462336] [2024-10-31 22:10:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:46,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:46,873 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 22:10:46,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:46,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814462336] [2024-10-31 22:10:46,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814462336] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:46,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:46,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:46,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615126523] [2024-10-31 22:10:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:46,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:46,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:46,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:46,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:46,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 86 [2024-10-31 22:10:46,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 22:10:46,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:46,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 86 [2024-10-31 22:10:46,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:47,695 INFO L124 PetriNetUnfolderBase]: 898/1624 cut-off events. [2024-10-31 22:10:47,696 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-10-31 22:10:47,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3240 conditions, 1624 events. 898/1624 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10783 event pairs, 187 based on Foata normal form. 0/1614 useless extension candidates. Maximal degree in co-relation 3231. Up to 1059 conditions per place. [2024-10-31 22:10:47,711 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 32 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-10-31 22:10:47,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 182 flow [2024-10-31 22:10:47,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:47,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-10-31 22:10:47,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.311046511627907 [2024-10-31 22:10:47,715 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 94 flow. Second operand 4 states and 107 transitions. [2024-10-31 22:10:47,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 182 flow [2024-10-31 22:10:47,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:47,719 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 90 flow [2024-10-31 22:10:47,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-10-31 22:10:47,721 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -41 predicate places. [2024-10-31 22:10:47,721 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 90 flow [2024-10-31 22:10:47,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 22:10:47,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:47,722 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:47,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:10:47,722 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-31 22:10:47,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:47,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1960308460, now seen corresponding path program 1 times [2024-10-31 22:10:47,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:47,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100365124] [2024-10-31 22:10:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:47,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:48,246 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 22:10:48,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:48,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100365124] [2024-10-31 22:10:48,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100365124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:48,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:48,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937854088] [2024-10-31 22:10:48,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:48,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:48,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 86 [2024-10-31 22:10:48,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 22:10:48,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:48,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 86 [2024-10-31 22:10:48,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:48,946 INFO L124 PetriNetUnfolderBase]: 823/1513 cut-off events. [2024-10-31 22:10:48,947 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-10-31 22:10:48,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2982 conditions, 1513 events. 823/1513 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9987 event pairs, 163 based on Foata normal form. 36/1539 useless extension candidates. Maximal degree in co-relation 2973. Up to 948 conditions per place. [2024-10-31 22:10:48,960 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 31 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-10-31 22:10:48,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 176 flow [2024-10-31 22:10:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-10-31 22:10:48,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3081395348837209 [2024-10-31 22:10:48,963 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 90 flow. Second operand 4 states and 106 transitions. [2024-10-31 22:10:48,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 176 flow [2024-10-31 22:10:48,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 171 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:10:48,966 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 85 flow [2024-10-31 22:10:48,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2024-10-31 22:10:48,969 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -42 predicate places. [2024-10-31 22:10:48,970 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 85 flow [2024-10-31 22:10:48,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 22:10:48,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:48,972 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:48,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:10:48,973 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-31 22:10:48,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:48,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1567573490, now seen corresponding path program 1 times [2024-10-31 22:10:48,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:48,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690221862] [2024-10-31 22:10:48,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:48,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:49,049 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 22:10:49,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:49,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690221862] [2024-10-31 22:10:49,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690221862] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:49,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:49,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:10:49,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765357678] [2024-10-31 22:10:49,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:49,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:49,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:49,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:49,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:49,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 86 [2024-10-31 22:10:49,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 22:10:49,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:49,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 86 [2024-10-31 22:10:49,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:49,621 INFO L124 PetriNetUnfolderBase]: 823/1474 cut-off events. [2024-10-31 22:10:49,622 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-10-31 22:10:49,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 1474 events. 823/1474 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9724 event pairs, 823 based on Foata normal form. 48/1485 useless extension candidates. Maximal degree in co-relation 2934. Up to 1238 conditions per place. [2024-10-31 22:10:49,629 INFO L140 encePairwiseOnDemand]: 84/86 looper letters, 19 selfloop transitions, 1 changer transitions 1/35 dead transitions. [2024-10-31 22:10:49,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 125 flow [2024-10-31 22:10:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-10-31 22:10:49,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28294573643410853 [2024-10-31 22:10:49,631 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 85 flow. Second operand 3 states and 73 transitions. [2024-10-31 22:10:49,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 125 flow [2024-10-31 22:10:49,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:49,633 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 80 flow [2024-10-31 22:10:49,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2024-10-31 22:10:49,634 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -43 predicate places. [2024-10-31 22:10:49,634 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 80 flow [2024-10-31 22:10:49,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 22:10:49,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:49,635 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:49,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:10:49,635 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-31 22:10:49,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:49,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1567572493, now seen corresponding path program 1 times [2024-10-31 22:10:49,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:49,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774360987] [2024-10-31 22:10:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:49,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:49,809 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 22:10:49,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774360987] [2024-10-31 22:10:49,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774360987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:49,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:49,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:49,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655293801] [2024-10-31 22:10:49,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:49,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:49,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:49,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:49,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 86 [2024-10-31 22:10:49,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 22:10:49,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:49,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 86 [2024-10-31 22:10:49,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:50,613 INFO L124 PetriNetUnfolderBase]: 1678/2779 cut-off events. [2024-10-31 22:10:50,614 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:50,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5642 conditions, 2779 events. 1678/2779 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17000 event pairs, 186 based on Foata normal form. 100/2868 useless extension candidates. Maximal degree in co-relation 5634. Up to 1579 conditions per place. [2024-10-31 22:10:50,638 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 43 selfloop transitions, 5 changer transitions 1/59 dead transitions. [2024-10-31 22:10:50,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 236 flow [2024-10-31 22:10:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:50,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-10-31 22:10:50,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.311046511627907 [2024-10-31 22:10:50,642 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 80 flow. Second operand 4 states and 107 transitions. [2024-10-31 22:10:50,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 236 flow [2024-10-31 22:10:50,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:50,645 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 113 flow [2024-10-31 22:10:50,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-10-31 22:10:50,650 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -40 predicate places. [2024-10-31 22:10:50,650 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 113 flow [2024-10-31 22:10:50,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 22:10:50,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:50,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:50,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:10:50,652 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-31 22:10:50,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash -627528852, now seen corresponding path program 1 times [2024-10-31 22:10:50,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:50,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309455322] [2024-10-31 22:10:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:50,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:50,936 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 22:10:50,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:50,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309455322] [2024-10-31 22:10:50,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309455322] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:50,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:50,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:10:50,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238705055] [2024-10-31 22:10:50,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:50,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:50,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:50,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:50,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:50,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 86 [2024-10-31 22:10:50,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 22:10:50,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:50,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 86 [2024-10-31 22:10:50,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:51,622 INFO L124 PetriNetUnfolderBase]: 1036/1741 cut-off events. [2024-10-31 22:10:51,623 INFO L125 PetriNetUnfolderBase]: For 427/427 co-relation queries the response was YES. [2024-10-31 22:10:51,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4127 conditions, 1741 events. 1036/1741 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9411 event pairs, 98 based on Foata normal form. 82/1812 useless extension candidates. Maximal degree in co-relation 4116. Up to 697 conditions per place. [2024-10-31 22:10:51,640 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 54 selfloop transitions, 8 changer transitions 1/73 dead transitions. [2024-10-31 22:10:51,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 338 flow [2024-10-31 22:10:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:10:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:10:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-10-31 22:10:51,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.313953488372093 [2024-10-31 22:10:51,642 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 113 flow. Second operand 5 states and 135 transitions. [2024-10-31 22:10:51,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 338 flow [2024-10-31 22:10:51,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 73 transitions, 328 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:51,656 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 153 flow [2024-10-31 22:10:51,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2024-10-31 22:10:51,657 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -36 predicate places. [2024-10-31 22:10:51,657 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 153 flow [2024-10-31 22:10:51,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 22:10:51,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:51,657 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 22:10:51,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:10:51,658 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-31 22:10:51,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:51,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1379516052, now seen corresponding path program 1 times [2024-10-31 22:10:51,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:51,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832578126] [2024-10-31 22:10:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:51,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:52,422 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 22:10:52,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:52,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832578126] [2024-10-31 22:10:52,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832578126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:52,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:52,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:10:52,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967898711] [2024-10-31 22:10:52,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:52,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:52,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:52,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:52,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:10:52,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 86 [2024-10-31 22:10:52,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 22:10:52,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:52,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 86 [2024-10-31 22:10:52,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:52,925 INFO L124 PetriNetUnfolderBase]: 579/954 cut-off events. [2024-10-31 22:10:52,926 INFO L125 PetriNetUnfolderBase]: For 744/744 co-relation queries the response was YES. [2024-10-31 22:10:52,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2573 conditions, 954 events. 579/954 cut-off events. For 744/744 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4305 event pairs, 81 based on Foata normal form. 40/983 useless extension candidates. Maximal degree in co-relation 2560. Up to 308 conditions per place. [2024-10-31 22:10:52,934 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 47 selfloop transitions, 11 changer transitions 1/69 dead transitions. [2024-10-31 22:10:52,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 343 flow [2024-10-31 22:10:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:10:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-10-31 22:10:52,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2810077519379845 [2024-10-31 22:10:52,937 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 153 flow. Second operand 6 states and 145 transitions. [2024-10-31 22:10:52,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 343 flow [2024-10-31 22:10:52,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 69 transitions, 318 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-31 22:10:52,946 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 167 flow [2024-10-31 22:10:52,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=167, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2024-10-31 22:10:52,947 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -33 predicate places. [2024-10-31 22:10:52,948 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 167 flow [2024-10-31 22:10:52,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 22:10:52,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:52,949 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:52,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:10:52,949 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-31 22:10:52,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:52,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1625310309, now seen corresponding path program 1 times [2024-10-31 22:10:52,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:52,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825869417] [2024-10-31 22:10:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:52,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:53,645 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 22:10:53,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:53,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825869417] [2024-10-31 22:10:53,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825869417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:53,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:53,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:10:53,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834979295] [2024-10-31 22:10:53,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:53,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:53,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:53,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:53,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:10:53,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 86 [2024-10-31 22:10:53,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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 22:10:53,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:53,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 86 [2024-10-31 22:10:53,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:54,208 INFO L124 PetriNetUnfolderBase]: 685/1334 cut-off events. [2024-10-31 22:10:54,208 INFO L125 PetriNetUnfolderBase]: For 622/636 co-relation queries the response was YES. [2024-10-31 22:10:54,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3094 conditions, 1334 events. 685/1334 cut-off events. For 622/636 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7512 event pairs, 142 based on Foata normal form. 8/1304 useless extension candidates. Maximal degree in co-relation 3080. Up to 583 conditions per place. [2024-10-31 22:10:54,216 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 27 selfloop transitions, 1 changer transitions 24/70 dead transitions. [2024-10-31 22:10:54,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 345 flow [2024-10-31 22:10:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:54,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:10:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-10-31 22:10:54,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28875968992248063 [2024-10-31 22:10:54,220 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 167 flow. Second operand 6 states and 149 transitions. [2024-10-31 22:10:54,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 345 flow [2024-10-31 22:10:54,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 70 transitions, 281 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-10-31 22:10:54,231 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 122 flow [2024-10-31 22:10:54,231 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2024-10-31 22:10:54,232 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -32 predicate places. [2024-10-31 22:10:54,232 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 122 flow [2024-10-31 22:10:54,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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 22:10:54,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:54,233 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:54,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:10:54,233 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-31 22:10:54,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:54,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1158147151, now seen corresponding path program 2 times [2024-10-31 22:10:54,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:54,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017088570] [2024-10-31 22:10:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:54,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat