./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1 --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 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:32:52,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:32:52,760 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 08:32:52,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:32:52,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:32:52,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:32:52,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:32:52,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:32:52,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:32:52,787 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:32:52,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:32:52,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:32:52,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:32:52,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:32:52,788 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:32:52,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:32:52,788 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:32:52,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:32:52,788 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:32:52,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:32:52,788 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 08:32:52,788 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 08:32:52,788 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 08:32:52,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:32:52,788 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 08:32:52,789 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 08:32:52,789 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:32:52,789 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:32:52,789 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:32:52,789 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:32:52,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:32:52,789 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:32:52,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:32:52,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:32:52,789 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:32:52,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:32:52,789 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:32:52,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:32:52,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:32:52,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:32:52,790 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:32:52,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:32:52,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:32:52,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:32:52,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:32:52,790 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:32:52,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:32:52,790 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1 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 -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 [2024-12-02 08:32:53,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:32:53,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:32:53,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:32:53,077 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:32:53,079 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:32:53,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2024-12-02 08:32:55,695 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/data/30a0ba502/8943716d6c314d529533002ddd6608fc/FLAG265153bd1 [2024-12-02 08:32:55,947 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:32:55,947 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2024-12-02 08:32:55,961 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/data/30a0ba502/8943716d6c314d529533002ddd6608fc/FLAG265153bd1 [2024-12-02 08:32:56,279 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/data/30a0ba502/8943716d6c314d529533002ddd6608fc [2024-12-02 08:32:56,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:32:56,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:32:56,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:32:56,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:32:56,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:32:56,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24319aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56, skipping insertion in model container [2024-12-02 08:32:56,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,317 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:32:56,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:32:56,729 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:32:56,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:32:56,847 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:32:56,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56 WrapperNode [2024-12-02 08:32:56,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:32:56,849 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:32:56,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:32:56,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:32:56,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,898 INFO L138 Inliner]: procedures = 271, calls = 110, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 266 [2024-12-02 08:32:56,898 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:32:56,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:32:56,899 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:32:56,899 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:32:56,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,911 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,928 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 2, 70, 5]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 0, 60, 5]. The 5 writes are split as follows [0, 1, 4, 0]. [2024-12-02 08:32:56,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,939 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,945 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,952 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:32:56,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:32:56,953 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:32:56,953 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:32:56,954 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (1/1) ... [2024-12-02 08:32:56,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:32:56,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:32:56,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:32:56,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:32:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 08:32:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 08:32:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 08:32:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:32:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:32:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 08:32:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 08:32:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:32:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:32:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 08:32:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 08:32:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 08:32:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:32:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 08:32:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 08:32:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:32:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:32:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 08:32:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 08:32:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:32:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:32:57,019 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 08:32:57,158 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:32:57,160 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:32:57,653 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 08:32:57,653 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:32:58,135 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:32:58,135 INFO L312 CfgBuilder]: Removed 13 assume(true) statements. [2024-12-02 08:32:58,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:32:58 BoogieIcfgContainer [2024-12-02 08:32:58,136 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:32:58,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:32:58,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:32:58,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:32:58,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:32:56" (1/3) ... [2024-12-02 08:32:58,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72588216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:32:58, skipping insertion in model container [2024-12-02 08:32:58,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:32:56" (2/3) ... [2024-12-02 08:32:58,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72588216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:32:58, skipping insertion in model container [2024-12-02 08:32:58,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:32:58" (3/3) ... [2024-12-02 08:32:58,146 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2024-12-02 08:32:58,164 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:32:58,165 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_76-tricky_address3_racefree.i that has 2 procedures, 109 locations, 1 initial locations, 13 loop locations, and 27 error locations. [2024-12-02 08:32:58,166 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 08:32:58,226 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-02 08:32:58,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 137 transitions, 281 flow [2024-12-02 08:32:58,347 INFO L124 PetriNetUnfolderBase]: 41/207 cut-off events. [2024-12-02 08:32:58,349 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 08:32:58,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 207 events. 41/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1043 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2024-12-02 08:32:58,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 137 transitions, 281 flow [2024-12-02 08:32:58,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 137 transitions, 281 flow [2024-12-02 08:32:58,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:32:58,381 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;@7a0e68a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:32:58,381 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-12-02 08:32:58,387 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:32:58,387 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-12-02 08:32:58,387 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:32:58,387 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:32:58,388 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-12-02 08:32:58,388 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-12-02 08:32:58,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:32:58,393 INFO L85 PathProgramCache]: Analyzing trace with hash 23005663, now seen corresponding path program 1 times [2024-12-02 08:32:58,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:32:58,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936521971] [2024-12-02 08:32:58,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:32:58,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:32:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:32:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:32:58,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:32:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936521971] [2024-12-02 08:32:58,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936521971] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:32:58,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:32:58,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:32:58,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206639134] [2024-12-02 08:32:58,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:32:58,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:32:58,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:32:58,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:32:58,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:32:58,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 137 [2024-12-02 08:32:58,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2024-12-02 08:32:58,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:32:58,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 137 [2024-12-02 08:32:58,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:32:59,137 INFO L124 PetriNetUnfolderBase]: 554/1929 cut-off events. [2024-12-02 08:32:59,138 INFO L125 PetriNetUnfolderBase]: For 4/5 co-relation queries the response was YES. [2024-12-02 08:32:59,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3033 conditions, 1929 events. 554/1929 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15061 event pairs, 504 based on Foata normal form. 386/2048 useless extension candidates. Maximal degree in co-relation 2931. Up to 1098 conditions per place. [2024-12-02 08:32:59,157 INFO L140 encePairwiseOnDemand]: 110/137 looper letters, 50 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-12-02 08:32:59,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 335 flow [2024-12-02 08:32:59,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:32:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:32:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2024-12-02 08:32:59,173 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6253041362530414 [2024-12-02 08:32:59,175 INFO L175 Difference]: Start difference. First operand has 112 places, 137 transitions, 281 flow. Second operand 3 states and 257 transitions. [2024-12-02 08:32:59,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 335 flow [2024-12-02 08:32:59,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 335 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:32:59,187 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 241 flow [2024-12-02 08:32:59,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2024-12-02 08:32:59,194 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 1 predicate places. [2024-12-02 08:32:59,194 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 241 flow [2024-12-02 08:32:59,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2024-12-02 08:32:59,195 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:32:59,195 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 08:32:59,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:32:59,195 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-12-02 08:32:59,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:32:59,196 INFO L85 PathProgramCache]: Analyzing trace with hash 713143969, now seen corresponding path program 1 times [2024-12-02 08:32:59,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:32:59,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909905287] [2024-12-02 08:32:59,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:32:59,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:32:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:32:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:32:59,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:32:59,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909905287] [2024-12-02 08:32:59,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909905287] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:32:59,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981879735] [2024-12-02 08:32:59,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:32:59,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:32:59,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:32:59,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:32:59,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:32:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:32:59,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:32:59,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:32:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:32:59,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:32:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:32:59,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981879735] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:32:59,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:32:59,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-12-02 08:32:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991459596] [2024-12-02 08:32:59,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:32:59,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:32:59,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:32:59,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:32:59,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:32:59,511 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 137 [2024-12-02 08:32:59,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 241 flow. Second operand has 7 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 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) [2024-12-02 08:32:59,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:32:59,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 137 [2024-12-02 08:32:59,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:32:59,959 INFO L124 PetriNetUnfolderBase]: 554/1932 cut-off events. [2024-12-02 08:32:59,959 INFO L125 PetriNetUnfolderBase]: For 4/5 co-relation queries the response was YES. [2024-12-02 08:32:59,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 1932 events. 554/1932 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15095 event pairs, 504 based on Foata normal form. 0/1665 useless extension candidates. Maximal degree in co-relation 3037. Up to 1098 conditions per place. [2024-12-02 08:32:59,970 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 50 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2024-12-02 08:32:59,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 363 flow [2024-12-02 08:32:59,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:32:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:32:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 418 transitions. [2024-12-02 08:32:59,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5085158150851582 [2024-12-02 08:32:59,974 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 241 flow. Second operand 6 states and 418 transitions. [2024-12-02 08:32:59,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 363 flow [2024-12-02 08:32:59,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 359 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 08:32:59,978 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 273 flow [2024-12-02 08:32:59,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2024-12-02 08:32:59,979 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 8 predicate places. [2024-12-02 08:32:59,979 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 273 flow [2024-12-02 08:32:59,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 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) [2024-12-02 08:32:59,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:32:59,980 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-12-02 08:32:59,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:33:00,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:33:00,181 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-12-02 08:33:00,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:00,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1962595745, now seen corresponding path program 2 times [2024-12-02 08:33:00,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:00,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195094606] [2024-12-02 08:33:00,182 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:33:00,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:00,214 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 08:33:00,214 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:33:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 08:33:00,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:33:00,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195094606] [2024-12-02 08:33:00,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195094606] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:33:00,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:33:00,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:33:00,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071922356] [2024-12-02 08:33:00,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:33:00,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:33:00,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:33:00,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:33:00,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:33:00,334 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 137 [2024-12-02 08:33:00,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2024-12-02 08:33:00,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:33:00,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 137 [2024-12-02 08:33:00,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:33:00,713 INFO L124 PetriNetUnfolderBase]: 598/1999 cut-off events. [2024-12-02 08:33:00,713 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-12-02 08:33:00,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3218 conditions, 1999 events. 598/1999 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 15499 event pairs, 504 based on Foata normal form. 0/1772 useless extension candidates. Maximal degree in co-relation 3184. Up to 1094 conditions per place. [2024-12-02 08:33:00,724 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 76 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2024-12-02 08:33:00,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 134 transitions, 467 flow [2024-12-02 08:33:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:33:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:33:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2024-12-02 08:33:00,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5936739659367397 [2024-12-02 08:33:00,726 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 273 flow. Second operand 3 states and 244 transitions. [2024-12-02 08:33:00,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 134 transitions, 467 flow [2024-12-02 08:33:00,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 134 transitions, 453 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-12-02 08:33:00,729 INFO L231 Difference]: Finished difference. Result has 119 places, 113 transitions, 259 flow [2024-12-02 08:33:00,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=119, PETRI_TRANSITIONS=113} [2024-12-02 08:33:00,730 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 7 predicate places. [2024-12-02 08:33:00,730 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 113 transitions, 259 flow [2024-12-02 08:33:00,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2024-12-02 08:33:00,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:00,731 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-12-02 08:33:00,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:33:00,731 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-12-02 08:33:00,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:00,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1962595744, now seen corresponding path program 1 times [2024-12-02 08:33:00,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:00,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302146398] [2024-12-02 08:33:00,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:00,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:33:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:33:00,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:33:00,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302146398] [2024-12-02 08:33:00,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302146398] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:33:00,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969055072] [2024-12-02 08:33:00,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:00,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:33:00,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:33:00,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:33:00,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:33:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:33:00,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:33:00,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:33:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:33:00,974 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:33:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:33:01,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969055072] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:33:01,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:33:01,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-12-02 08:33:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763126005] [2024-12-02 08:33:01,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:33:01,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 08:33:01,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:33:01,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 08:33:01,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:33:01,045 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 137 [2024-12-02 08:33:01,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 113 transitions, 259 flow. Second operand has 13 states, 13 states have (on average 61.15384615384615) internal successors, (795), 13 states have internal predecessors, (795), 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) [2024-12-02 08:33:01,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:33:01,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 137 [2024-12-02 08:33:01,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:33:01,359 INFO L124 PetriNetUnfolderBase]: 554/1915 cut-off events. [2024-12-02 08:33:01,359 INFO L125 PetriNetUnfolderBase]: For 54/55 co-relation queries the response was YES. [2024-12-02 08:33:01,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3081 conditions, 1915 events. 554/1915 cut-off events. For 54/55 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 14769 event pairs, 504 based on Foata normal form. 6/1678 useless extension candidates. Maximal degree in co-relation 3029. Up to 1098 conditions per place. [2024-12-02 08:33:01,370 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 50 selfloop transitions, 11 changer transitions 0/119 dead transitions. [2024-12-02 08:33:01,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 119 transitions, 417 flow [2024-12-02 08:33:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 08:33:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 08:33:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 787 transitions. [2024-12-02 08:33:01,375 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4787104622871046 [2024-12-02 08:33:01,375 INFO L175 Difference]: Start difference. First operand has 119 places, 113 transitions, 259 flow. Second operand 12 states and 787 transitions. [2024-12-02 08:33:01,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 119 transitions, 417 flow [2024-12-02 08:33:01,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 119 transitions, 413 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:33:01,379 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 339 flow [2024-12-02 08:33:01,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=339, PETRI_PLACES=134, PETRI_TRANSITIONS=119} [2024-12-02 08:33:01,380 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 22 predicate places. [2024-12-02 08:33:01,380 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 339 flow [2024-12-02 08:33:01,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 61.15384615384615) internal successors, (795), 13 states have internal predecessors, (795), 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) [2024-12-02 08:33:01,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:01,381 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2024-12-02 08:33:01,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:33:01,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:33:01,582 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-12-02 08:33:01,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:01,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1308648224, now seen corresponding path program 2 times [2024-12-02 08:33:01,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:01,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703063525] [2024-12-02 08:33:01,583 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:33:01,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:01,602 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 08:33:01,602 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:33:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 08:33:01,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:33:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703063525] [2024-12-02 08:33:01,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703063525] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:33:01,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:33:01,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:33:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747606932] [2024-12-02 08:33:01,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:33:01,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:33:01,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:33:01,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:33:01,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:33:01,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 137 [2024-12-02 08:33:01,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 119 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2024-12-02 08:33:01,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:33:01,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 137 [2024-12-02 08:33:01,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:33:02,064 INFO L124 PetriNetUnfolderBase]: 549/1849 cut-off events. [2024-12-02 08:33:02,065 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-12-02 08:33:02,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 1849 events. 549/1849 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 14504 event pairs, 0 based on Foata normal form. 1/1636 useless extension candidates. Maximal degree in co-relation 2953. Up to 1092 conditions per place. [2024-12-02 08:33:02,075 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 82 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2024-12-02 08:33:02,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 141 transitions, 551 flow [2024-12-02 08:33:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:33:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:33:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2024-12-02 08:33:02,077 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6155717761557178 [2024-12-02 08:33:02,077 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 339 flow. Second operand 3 states and 253 transitions. [2024-12-02 08:33:02,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 141 transitions, 551 flow [2024-12-02 08:33:02,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 141 transitions, 503 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-12-02 08:33:02,082 INFO L231 Difference]: Finished difference. Result has 132 places, 119 transitions, 301 flow [2024-12-02 08:33:02,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=132, PETRI_TRANSITIONS=119} [2024-12-02 08:33:02,083 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 20 predicate places. [2024-12-02 08:33:02,083 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 119 transitions, 301 flow [2024-12-02 08:33:02,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2024-12-02 08:33:02,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:02,083 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 08:33:02,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:33:02,084 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-12-02 08:33:02,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:02,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1000913254, now seen corresponding path program 1 times [2024-12-02 08:33:02,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:02,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319914484] [2024-12-02 08:33:02,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:02,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:33:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 08:33:02,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:33:02,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319914484] [2024-12-02 08:33:02,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319914484] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:33:02,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:33:02,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:33:02,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965314276] [2024-12-02 08:33:02,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:33:02,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:33:02,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:33:02,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:33:02,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:33:02,360 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 137 [2024-12-02 08:33:02,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 119 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 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) [2024-12-02 08:33:02,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:33:02,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 137 [2024-12-02 08:33:02,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:33:02,511 INFO L124 PetriNetUnfolderBase]: 68/262 cut-off events. [2024-12-02 08:33:02,511 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-12-02 08:33:02,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 262 events. 68/262 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1090 event pairs, 28 based on Foata normal form. 44/285 useless extension candidates. Maximal degree in co-relation 461. Up to 129 conditions per place. [2024-12-02 08:33:02,513 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 59 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-12-02 08:33:02,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 352 flow [2024-12-02 08:33:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:33:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:33:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 285 transitions. [2024-12-02 08:33:02,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5200729927007299 [2024-12-02 08:33:02,515 INFO L175 Difference]: Start difference. First operand has 132 places, 119 transitions, 301 flow. Second operand 4 states and 285 transitions. [2024-12-02 08:33:02,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 352 flow [2024-12-02 08:33:02,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 346 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 08:33:02,518 INFO L231 Difference]: Finished difference. Result has 79 places, 64 transitions, 182 flow [2024-12-02 08:33:02,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=79, PETRI_TRANSITIONS=64} [2024-12-02 08:33:02,519 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, -33 predicate places. [2024-12-02 08:33:02,519 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 64 transitions, 182 flow [2024-12-02 08:33:02,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 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) [2024-12-02 08:33:02,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:02,519 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 08:33:02,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:33:02,519 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-12-02 08:33:02,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash -963538990, now seen corresponding path program 1 times [2024-12-02 08:33:02,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:02,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851168151] [2024-12-02 08:33:02,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:02,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:33:02,552 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:33:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:33:02,593 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:33:02,593 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:33:02,596 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2024-12-02 08:33:02,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 39 remaining) [2024-12-02 08:33:02,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 39 remaining) [2024-12-02 08:33:02,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 39 remaining) [2024-12-02 08:33:02,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 39 remaining) [2024-12-02 08:33:02,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (33 of 39 remaining) [2024-12-02 08:33:02,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 39 remaining) [2024-12-02 08:33:02,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 39 remaining) [2024-12-02 08:33:02,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 39 remaining) [2024-12-02 08:33:02,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 39 remaining) [2024-12-02 08:33:02,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 39 remaining) [2024-12-02 08:33:02,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 39 remaining) [2024-12-02 08:33:02,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 39 remaining) [2024-12-02 08:33:02,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 39 remaining) [2024-12-02 08:33:02,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 39 remaining) [2024-12-02 08:33:02,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 39 remaining) [2024-12-02 08:33:02,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (22 of 39 remaining) [2024-12-02 08:33:02,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 39 remaining) [2024-12-02 08:33:02,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 39 remaining) [2024-12-02 08:33:02,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 39 remaining) [2024-12-02 08:33:02,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 39 remaining) [2024-12-02 08:33:02,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 39 remaining) [2024-12-02 08:33:02,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 39 remaining) [2024-12-02 08:33:02,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 39 remaining) [2024-12-02 08:33:02,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 39 remaining) [2024-12-02 08:33:02,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 39 remaining) [2024-12-02 08:33:02,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 39 remaining) [2024-12-02 08:33:02,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 39 remaining) [2024-12-02 08:33:02,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 39 remaining) [2024-12-02 08:33:02,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 39 remaining) [2024-12-02 08:33:02,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 39 remaining) [2024-12-02 08:33:02,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 39 remaining) [2024-12-02 08:33:02,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 39 remaining) [2024-12-02 08:33:02,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 39 remaining) [2024-12-02 08:33:02,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 39 remaining) [2024-12-02 08:33:02,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 39 remaining) [2024-12-02 08:33:02,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 39 remaining) [2024-12-02 08:33:02,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 39 remaining) [2024-12-02 08:33:02,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 39 remaining) [2024-12-02 08:33:02,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:33:02,603 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-12-02 08:33:02,606 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:33:02,606 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 08:33:02,646 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 08:33:02,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 198 transitions, 412 flow [2024-12-02 08:33:02,694 INFO L124 PetriNetUnfolderBase]: 69/350 cut-off events. [2024-12-02 08:33:02,694 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 08:33:02,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 350 events. 69/350 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2045 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 209. Up to 12 conditions per place. [2024-12-02 08:33:02,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 198 transitions, 412 flow [2024-12-02 08:33:02,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 198 transitions, 412 flow [2024-12-02 08:33:02,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:33:02,704 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;@7a0e68a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:33:02,704 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-12-02 08:33:02,707 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:33:02,707 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-12-02 08:33:02,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:33:02,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:02,707 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-12-02 08:33:02,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-12-02 08:33:02,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:02,708 INFO L85 PathProgramCache]: Analyzing trace with hash 29100895, now seen corresponding path program 1 times [2024-12-02 08:33:02,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:02,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818872491] [2024-12-02 08:33:02,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:02,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:33:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:33:02,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:33:02,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818872491] [2024-12-02 08:33:02,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818872491] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:33:02,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:33:02,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:33:02,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214414635] [2024-12-02 08:33:02,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:33:02,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:33:02,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:33:02,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:33:02,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:33:02,748 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 198 [2024-12-02 08:33:02,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 198 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2024-12-02 08:33:02,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:33:02,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 198 [2024-12-02 08:33:02,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:33:06,625 INFO L124 PetriNetUnfolderBase]: 24909/55324 cut-off events. [2024-12-02 08:33:06,625 INFO L125 PetriNetUnfolderBase]: For 153/175 co-relation queries the response was YES. [2024-12-02 08:33:06,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92368 conditions, 55324 events. 24909/55324 cut-off events. For 153/175 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 617819 event pairs, 23247 based on Foata normal form. 13194/62140 useless extension candidates. Maximal degree in co-relation 85069. Up to 36926 conditions per place. [2024-12-02 08:33:06,868 INFO L140 encePairwiseOnDemand]: 159/198 looper letters, 73 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2024-12-02 08:33:06,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 160 transitions, 486 flow [2024-12-02 08:33:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:33:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:33:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2024-12-02 08:33:06,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6178451178451179 [2024-12-02 08:33:06,871 INFO L175 Difference]: Start difference. First operand has 161 places, 198 transitions, 412 flow. Second operand 3 states and 367 transitions. [2024-12-02 08:33:06,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 160 transitions, 486 flow [2024-12-02 08:33:06,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 160 transitions, 486 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:33:06,874 INFO L231 Difference]: Finished difference. Result has 161 places, 160 transitions, 346 flow [2024-12-02 08:33:06,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=161, PETRI_TRANSITIONS=160} [2024-12-02 08:33:06,875 INFO L279 CegarLoopForPetriNet]: 161 programPoint places, 0 predicate places. [2024-12-02 08:33:06,875 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 160 transitions, 346 flow [2024-12-02 08:33:06,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2024-12-02 08:33:06,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:06,876 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 08:33:06,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:33:06,876 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-12-02 08:33:06,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:06,876 INFO L85 PathProgramCache]: Analyzing trace with hash 902096359, now seen corresponding path program 1 times [2024-12-02 08:33:06,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:06,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200147035] [2024-12-02 08:33:06,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:06,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:33:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:33:06,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:33:06,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200147035] [2024-12-02 08:33:06,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200147035] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:33:06,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994820127] [2024-12-02 08:33:06,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:06,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:33:06,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:33:06,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:33:06,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:33:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:33:07,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:33:07,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:33:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:33:07,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:33:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:33:07,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994820127] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:33:07,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:33:07,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-12-02 08:33:07,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076976602] [2024-12-02 08:33:07,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:33:07,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:33:07,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:33:07,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:33:07,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:33:07,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 198 [2024-12-02 08:33:07,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 160 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 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) [2024-12-02 08:33:07,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:33:07,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 198 [2024-12-02 08:33:07,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:33:10,816 INFO L124 PetriNetUnfolderBase]: 24909/55327 cut-off events. [2024-12-02 08:33:10,816 INFO L125 PetriNetUnfolderBase]: For 170/192 co-relation queries the response was YES. [2024-12-02 08:33:10,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92384 conditions, 55327 events. 24909/55327 cut-off events. For 170/192 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 617619 event pairs, 23247 based on Foata normal form. 0/48949 useless extension candidates. Maximal degree in co-relation 92371. Up to 36926 conditions per place. [2024-12-02 08:33:11,023 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 73 selfloop transitions, 5 changer transitions 0/163 dead transitions. [2024-12-02 08:33:11,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 163 transitions, 514 flow [2024-12-02 08:33:11,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:33:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:33:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 591 transitions. [2024-12-02 08:33:11,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49747474747474746 [2024-12-02 08:33:11,026 INFO L175 Difference]: Start difference. First operand has 161 places, 160 transitions, 346 flow. Second operand 6 states and 591 transitions. [2024-12-02 08:33:11,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 163 transitions, 514 flow [2024-12-02 08:33:11,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 163 transitions, 510 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 08:33:11,030 INFO L231 Difference]: Finished difference. Result has 168 places, 163 transitions, 378 flow [2024-12-02 08:33:11,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=168, PETRI_TRANSITIONS=163} [2024-12-02 08:33:11,031 INFO L279 CegarLoopForPetriNet]: 161 programPoint places, 7 predicate places. [2024-12-02 08:33:11,031 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 163 transitions, 378 flow [2024-12-02 08:33:11,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 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) [2024-12-02 08:33:11,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:11,032 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-12-02 08:33:11,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 08:33:11,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:33:11,233 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-12-02 08:33:11,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:11,233 INFO L85 PathProgramCache]: Analyzing trace with hash 711093599, now seen corresponding path program 2 times [2024-12-02 08:33:11,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:11,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969064507] [2024-12-02 08:33:11,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:33:11,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:11,246 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 08:33:11,246 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:33:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 08:33:11,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:33:11,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969064507] [2024-12-02 08:33:11,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969064507] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:33:11,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:33:11,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:33:11,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922935860] [2024-12-02 08:33:11,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:33:11,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:33:11,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:33:11,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:33:11,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:33:11,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 198 [2024-12-02 08:33:11,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 163 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2024-12-02 08:33:11,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:33:11,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 198 [2024-12-02 08:33:11,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:33:15,502 INFO L124 PetriNetUnfolderBase]: 26873/58444 cut-off events. [2024-12-02 08:33:15,503 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-12-02 08:33:15,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98482 conditions, 58444 events. 26873/58444 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 647116 event pairs, 23226 based on Foata normal form. 0/52403 useless extension candidates. Maximal degree in co-relation 98447. Up to 36847 conditions per place. [2024-12-02 08:33:15,740 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 120 selfloop transitions, 2 changer transitions 0/203 dead transitions. [2024-12-02 08:33:15,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 203 transitions, 702 flow [2024-12-02 08:33:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:33:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:33:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2024-12-02 08:33:15,742 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-12-02 08:33:15,742 INFO L175 Difference]: Start difference. First operand has 168 places, 163 transitions, 378 flow. Second operand 3 states and 363 transitions. [2024-12-02 08:33:15,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 203 transitions, 702 flow [2024-12-02 08:33:15,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 203 transitions, 688 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-12-02 08:33:15,745 INFO L231 Difference]: Finished difference. Result has 167 places, 161 transitions, 364 flow [2024-12-02 08:33:15,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=167, PETRI_TRANSITIONS=161} [2024-12-02 08:33:15,745 INFO L279 CegarLoopForPetriNet]: 161 programPoint places, 6 predicate places. [2024-12-02 08:33:15,746 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 161 transitions, 364 flow [2024-12-02 08:33:15,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2024-12-02 08:33:15,746 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:15,746 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-12-02 08:33:15,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:33:15,746 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-12-02 08:33:15,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:15,747 INFO L85 PathProgramCache]: Analyzing trace with hash 711093600, now seen corresponding path program 1 times [2024-12-02 08:33:15,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:15,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967977391] [2024-12-02 08:33:15,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:15,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:33:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:33:15,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:33:15,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967977391] [2024-12-02 08:33:15,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967977391] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:33:15,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69327371] [2024-12-02 08:33:15,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:15,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:33:15,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:33:15,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:33:15,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:33:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:33:15,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:33:15,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:33:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:33:15,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:33:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:33:16,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69327371] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:33:16,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:33:16,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-12-02 08:33:16,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531102940] [2024-12-02 08:33:16,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:33:16,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 08:33:16,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:33:16,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 08:33:16,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:33:16,004 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 198 [2024-12-02 08:33:16,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 161 transitions, 364 flow. Second operand has 13 states, 13 states have (on average 86.15384615384616) internal successors, (1120), 13 states have internal predecessors, (1120), 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) [2024-12-02 08:33:16,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:33:16,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 198 [2024-12-02 08:33:16,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:33:19,441 INFO L124 PetriNetUnfolderBase]: 24909/55039 cut-off events. [2024-12-02 08:33:19,441 INFO L125 PetriNetUnfolderBase]: For 457/479 co-relation queries the response was YES. [2024-12-02 08:33:19,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92651 conditions, 55039 events. 24909/55039 cut-off events. For 457/479 co-relation queries the response was YES. Maximal size of possible extension queue 1630. Compared 611389 event pairs, 23247 based on Foata normal form. 6/48962 useless extension candidates. Maximal degree in co-relation 92598. Up to 36926 conditions per place. [2024-12-02 08:33:19,686 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 73 selfloop transitions, 11 changer transitions 0/167 dead transitions. [2024-12-02 08:33:19,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 167 transitions, 568 flow [2024-12-02 08:33:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 08:33:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 08:33:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1110 transitions. [2024-12-02 08:33:19,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-12-02 08:33:19,689 INFO L175 Difference]: Start difference. First operand has 167 places, 161 transitions, 364 flow. Second operand 12 states and 1110 transitions. [2024-12-02 08:33:19,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 167 transitions, 568 flow [2024-12-02 08:33:19,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 167 transitions, 564 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:33:19,919 INFO L231 Difference]: Finished difference. Result has 182 places, 167 transitions, 444 flow [2024-12-02 08:33:19,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=444, PETRI_PLACES=182, PETRI_TRANSITIONS=167} [2024-12-02 08:33:19,920 INFO L279 CegarLoopForPetriNet]: 161 programPoint places, 21 predicate places. [2024-12-02 08:33:19,920 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 167 transitions, 444 flow [2024-12-02 08:33:19,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 86.15384615384616) internal successors, (1120), 13 states have internal predecessors, (1120), 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) [2024-12-02 08:33:19,920 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:19,921 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2024-12-02 08:33:19,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 08:33:20,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce58752-1654-4c1c-a98c-61a06fa5bfeb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:33:20,121 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-12-02 08:33:20,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:20,122 INFO L85 PathProgramCache]: Analyzing trace with hash -767418272, now seen corresponding path program 2 times [2024-12-02 08:33:20,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382395038] [2024-12-02 08:33:20,122 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:33:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:20,134 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 08:33:20,134 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:33:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 08:33:20,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:33:20,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382395038] [2024-12-02 08:33:20,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382395038] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:33:20,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:33:20,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:33:20,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532184628] [2024-12-02 08:33:20,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:33:20,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:33:20,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:33:20,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:33:20,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:33:20,238 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 198 [2024-12-02 08:33:20,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 167 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:33:20,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:33:20,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 198 [2024-12-02 08:33:20,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:33:24,778 INFO L124 PetriNetUnfolderBase]: 25299/56149 cut-off events. [2024-12-02 08:33:24,779 INFO L125 PetriNetUnfolderBase]: For 258/280 co-relation queries the response was YES. [2024-12-02 08:33:24,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94159 conditions, 56149 events. 25299/56149 cut-off events. For 258/280 co-relation queries the response was YES. Maximal size of possible extension queue 1702. Compared 633398 event pairs, 11634 based on Foata normal form. 1/50096 useless extension candidates. Maximal degree in co-relation 94082. Up to 37810 conditions per place. [2024-12-02 08:33:25,062 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 106 selfloop transitions, 2 changer transitions 0/190 dead transitions. [2024-12-02 08:33:25,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 190 transitions, 706 flow [2024-12-02 08:33:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:33:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:33:25,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2024-12-02 08:33:25,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-12-02 08:33:25,064 INFO L175 Difference]: Start difference. First operand has 182 places, 167 transitions, 444 flow. Second operand 3 states and 352 transitions. [2024-12-02 08:33:25,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 190 transitions, 706 flow [2024-12-02 08:33:25,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 190 transitions, 658 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-12-02 08:33:25,067 INFO L231 Difference]: Finished difference. Result has 180 places, 168 transitions, 410 flow [2024-12-02 08:33:25,067 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=410, PETRI_PLACES=180, PETRI_TRANSITIONS=168} [2024-12-02 08:33:25,067 INFO L279 CegarLoopForPetriNet]: 161 programPoint places, 19 predicate places. [2024-12-02 08:33:25,067 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 168 transitions, 410 flow [2024-12-02 08:33:25,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:33:25,068 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:25,068 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 08:33:25,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:33:25,068 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-12-02 08:33:25,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1418709185, now seen corresponding path program 1 times [2024-12-02 08:33:25,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:25,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506780005] [2024-12-02 08:33:25,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:25,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:33:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 08:33:25,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:33:25,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506780005] [2024-12-02 08:33:25,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506780005] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:33:25,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:33:25,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:33:25,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752533184] [2024-12-02 08:33:25,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:33:25,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:33:25,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:33:25,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:33:25,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:33:25,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 198 [2024-12-02 08:33:25,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 168 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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) [2024-12-02 08:33:25,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:33:25,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 198 [2024-12-02 08:33:25,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:33:29,787 INFO L124 PetriNetUnfolderBase]: 24722/53737 cut-off events. [2024-12-02 08:33:29,787 INFO L125 PetriNetUnfolderBase]: For 1264/1264 co-relation queries the response was YES. [2024-12-02 08:33:29,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91911 conditions, 53737 events. 24722/53737 cut-off events. For 1264/1264 co-relation queries the response was YES. Maximal size of possible extension queue 1631. Compared 595813 event pairs, 1877 based on Foata normal form. 528/49194 useless extension candidates. Maximal degree in co-relation 91857. Up to 31632 conditions per place. [2024-12-02 08:33:30,057 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 189 selfloop transitions, 5 changer transitions 0/275 dead transitions. [2024-12-02 08:33:30,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 275 transitions, 1010 flow [2024-12-02 08:33:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:33:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 08:33:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2024-12-02 08:33:30,058 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6070707070707071 [2024-12-02 08:33:30,058 INFO L175 Difference]: Start difference. First operand has 180 places, 168 transitions, 410 flow. Second operand 5 states and 601 transitions. [2024-12-02 08:33:30,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 275 transitions, 1010 flow [2024-12-02 08:33:30,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 275 transitions, 1008 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 08:33:30,063 INFO L231 Difference]: Finished difference. Result has 183 places, 168 transitions, 421 flow [2024-12-02 08:33:30,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=421, PETRI_PLACES=183, PETRI_TRANSITIONS=168} [2024-12-02 08:33:30,064 INFO L279 CegarLoopForPetriNet]: 161 programPoint places, 22 predicate places. [2024-12-02 08:33:30,064 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 168 transitions, 421 flow [2024-12-02 08:33:30,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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) [2024-12-02 08:33:30,064 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:30,064 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:33:30,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:33:30,064 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-12-02 08:33:30,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1416956774, now seen corresponding path program 1 times [2024-12-02 08:33:30,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:30,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987366693] [2024-12-02 08:33:30,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:30,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:33:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 08:33:30,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:33:30,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987366693] [2024-12-02 08:33:30,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987366693] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:33:30,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:33:30,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:33:30,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554463929] [2024-12-02 08:33:30,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:33:30,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:33:30,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:33:30,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:33:30,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:33:30,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 198 [2024-12-02 08:33:30,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 168 transitions, 421 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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) [2024-12-02 08:33:30,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:33:30,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 198 [2024-12-02 08:33:30,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:33:34,775 INFO L124 PetriNetUnfolderBase]: 26825/53558 cut-off events. [2024-12-02 08:33:34,776 INFO L125 PetriNetUnfolderBase]: For 5139/5139 co-relation queries the response was YES. [2024-12-02 08:33:34,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97581 conditions, 53558 events. 26825/53558 cut-off events. For 5139/5139 co-relation queries the response was YES. Maximal size of possible extension queue 1531. Compared 559229 event pairs, 639 based on Foata normal form. 0/51342 useless extension candidates. Maximal degree in co-relation 97526. Up to 34345 conditions per place. [2024-12-02 08:33:35,073 INFO L140 encePairwiseOnDemand]: 180/198 looper letters, 210 selfloop transitions, 9 changer transitions 0/289 dead transitions. [2024-12-02 08:33:35,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 289 transitions, 1128 flow [2024-12-02 08:33:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:33:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 08:33:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 588 transitions. [2024-12-02 08:33:35,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.593939393939394 [2024-12-02 08:33:35,075 INFO L175 Difference]: Start difference. First operand has 183 places, 168 transitions, 421 flow. Second operand 5 states and 588 transitions. [2024-12-02 08:33:35,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 289 transitions, 1128 flow [2024-12-02 08:33:35,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 289 transitions, 1111 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-12-02 08:33:35,083 INFO L231 Difference]: Finished difference. Result has 183 places, 170 transitions, 479 flow [2024-12-02 08:33:35,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=183, PETRI_TRANSITIONS=170} [2024-12-02 08:33:35,084 INFO L279 CegarLoopForPetriNet]: 161 programPoint places, 22 predicate places. [2024-12-02 08:33:35,084 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 170 transitions, 479 flow [2024-12-02 08:33:35,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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) [2024-12-02 08:33:35,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:35,084 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 3, 3, 2, 1, 1, 1, 1, 1] [2024-12-02 08:33:35,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:33:35,084 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-12-02 08:33:35,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:35,085 INFO L85 PathProgramCache]: Analyzing trace with hash 2103257296, now seen corresponding path program 1 times [2024-12-02 08:33:35,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:35,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536551449] [2024-12-02 08:33:35,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:35,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:33:35,118 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:33:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:33:35,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:33:35,147 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:33:35,147 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 50 remaining) [2024-12-02 08:33:35,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (44 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2024-12-02 08:33:35,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (33 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (22 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2024-12-02 08:33:35,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2024-12-02 08:33:35,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2024-12-02 08:33:35,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2024-12-02 08:33:35,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2024-12-02 08:33:35,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2024-12-02 08:33:35,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2024-12-02 08:33:35,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 50 remaining) [2024-12-02 08:33:35,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 08:33:35,152 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2024-12-02 08:33:35,152 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:33:35,152 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 08:33:35,202 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 08:33:35,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 259 transitions, 545 flow [2024-12-02 08:33:35,287 INFO L124 PetriNetUnfolderBase]: 100/514 cut-off events. [2024-12-02 08:33:35,287 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-12-02 08:33:35,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 514 events. 100/514 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3121 event pairs, 1 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 359. Up to 16 conditions per place. [2024-12-02 08:33:35,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 259 transitions, 545 flow [2024-12-02 08:33:35,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 259 transitions, 545 flow [2024-12-02 08:33:35,304 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:33:35,304 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;@7a0e68a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:33:35,304 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-12-02 08:33:35,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:33:35,307 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-12-02 08:33:35,307 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:33:35,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:33:35,308 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-12-02 08:33:35,308 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-12-02 08:33:35,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:33:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash 37073951, now seen corresponding path program 1 times [2024-12-02 08:33:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:33:35,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53717123] [2024-12-02 08:33:35,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:33:35,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:33:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:33:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:33:35,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:33:35,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53717123] [2024-12-02 08:33:35,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53717123] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:33:35,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:33:35,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:33:35,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113281352] [2024-12-02 08:33:35,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:33:35,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:33:35,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:33:35,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:33:35,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:33:35,347 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 259 [2024-12-02 08:33:35,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 259 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2024-12-02 08:33:35,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:33:35,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 259 [2024-12-02 08:33:35,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand