./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe007_power.opt-thin001_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe007_power.opt-thin001_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6328ead9c10c029445fd051d7c6329db494c1000fb08b7313fbd69c70835e259 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:03:33,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:03:33,888 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:03:33,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:03:33,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:03:33,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:03:33,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:03:33,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:03:33,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:03:33,928 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:03:33,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:03:33,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:03:33,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:03:33,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:03:33,933 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:03:33,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:03:33,933 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:03:33,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:03:33,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:03:33,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:03:33,935 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:03:33,940 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:03:33,940 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:03:33,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:03:33,941 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:03:33,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:03:33,941 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:03:33,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:03:33,942 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:03:33,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:03:33,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:03:33,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:03:33,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:03:33,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:33,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:03:33,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:03:33,944 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:03:33,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:03:33,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:03:33,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:03:33,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:03:33,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:03:33,946 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6328ead9c10c029445fd051d7c6329db494c1000fb08b7313fbd69c70835e259 [2024-10-31 22:03:34,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:03:34,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:03:34,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:03:34,299 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:03:34,299 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:03:34,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe007_power.opt-thin001_power.opt.i Unable to find full path for "g++" [2024-10-31 22:03:36,248 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:03:36,546 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:03:36,547 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/sv-benchmarks/c/pthread-wmm/safe007_power.opt-thin001_power.opt.i [2024-10-31 22:03:36,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/data/64989dc64/32f6f677b049473c997bd9b7f0eb3b48/FLAG91bdd43cf [2024-10-31 22:03:36,818 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/data/64989dc64/32f6f677b049473c997bd9b7f0eb3b48 [2024-10-31 22:03:36,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:03:36,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:03:36,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:36,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:03:36,829 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:03:36,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:36" (1/1) ... [2024-10-31 22:03:36,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2610a580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:36, skipping insertion in model container [2024-10-31 22:03:36,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:36" (1/1) ... [2024-10-31 22:03:36,895 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:03:37,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:37,527 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:03:37,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:37,645 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:03:37,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37 WrapperNode [2024-10-31 22:03:37,647 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:37,648 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:37,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:03:37,649 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:03:37,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (1/1) ... [2024-10-31 22:03:37,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (1/1) ... [2024-10-31 22:03:37,729 INFO L138 Inliner]: procedures = 175, calls = 60, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 174 [2024-10-31 22:03:37,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:37,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:03:37,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:03:37,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:03:37,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (1/1) ... [2024-10-31 22:03:37,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (1/1) ... [2024-10-31 22:03:37,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (1/1) ... [2024-10-31 22:03:37,796 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-10-31 22:03:37,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (1/1) ... [2024-10-31 22:03:37,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (1/1) ... [2024-10-31 22:03:37,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (1/1) ... [2024-10-31 22:03:37,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (1/1) ... [2024-10-31 22:03:37,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (1/1) ... [2024-10-31 22:03:37,831 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (1/1) ... [2024-10-31 22:03:37,838 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:03:37,839 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:03:37,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:03:37,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:03:37,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (1/1) ... [2024-10-31 22:03:37,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:37,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:37,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:03:37,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a3fbdb-0f63-4318-9739-b8d5aa968c2e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:03:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:03:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:03:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:03:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:03:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:03:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:03:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:03:37,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:03:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:03:37,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:03:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:03:37,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:03:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:03:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:03:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:03:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:03:37,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:03:37,941 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:03:38,153 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:03:38,155 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:03:38,850 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:03:38,850 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:03:39,623 WARN L1754 r$LargeBlockEncoding]: Complex 4:9 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2024-10-31 22:03:39,823 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:03:39,823 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:03:39,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:39 BoogieIcfgContainer [2024-10-31 22:03:39,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:03:39,828 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:03:39,828 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:03:39,832 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:03:39,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:03:36" (1/3) ... [2024-10-31 22:03:39,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf80951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:39, skipping insertion in model container [2024-10-31 22:03:39,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:37" (2/3) ... [2024-10-31 22:03:39,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf80951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:39, skipping insertion in model container [2024-10-31 22:03:39,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:39" (3/3) ... [2024-10-31 22:03:39,837 INFO L112 eAbstractionObserver]: Analyzing ICFG safe007_power.opt-thin001_power.opt.i [2024-10-31 22:03:39,858 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:03:39,858 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2024-10-31 22:03:39,859 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:03:40,136 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:03:40,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 101 transitions, 214 flow [2024-10-31 22:03:40,262 INFO L124 PetriNetUnfolderBase]: 29/98 cut-off events. [2024-10-31 22:03:40,263 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:03:40,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 98 events. 29/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 322 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2024-10-31 22:03:40,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 101 transitions, 214 flow [2024-10-31 22:03:40,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 98 transitions, 205 flow [2024-10-31 22:03:40,293 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:03:40,301 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;@2fdc77c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:03:40,302 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-10-31 22:03:40,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:03:40,311 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-10-31 22:03:40,311 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:03:40,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:40,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:40,313 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:40,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1534162934, now seen corresponding path program 1 times [2024-10-31 22:03:40,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:40,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78237610] [2024-10-31 22:03:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:40,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:40,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:40,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78237610] [2024-10-31 22:03:40,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78237610] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:40,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:40,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:03:40,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746735059] [2024-10-31 22:03:40,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:40,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:40,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:41,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:41,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 101 [2024-10-31 22:03:41,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 98 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:41,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:41,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 101 [2024-10-31 22:03:41,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:45,031 INFO L124 PetriNetUnfolderBase]: 9134/13826 cut-off events. [2024-10-31 22:03:45,031 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-31 22:03:45,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26910 conditions, 13826 events. 9134/13826 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 111430 event pairs, 2689 based on Foata normal form. 516/7789 useless extension candidates. Maximal degree in co-relation 26899. Up to 7491 conditions per place. [2024-10-31 22:03:45,153 INFO L140 encePairwiseOnDemand]: 54/101 looper letters, 69 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-10-31 22:03:45,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 88 transitions, 332 flow [2024-10-31 22:03:45,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:45,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-10-31 22:03:45,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7029702970297029 [2024-10-31 22:03:45,169 INFO L175 Difference]: Start difference. First operand has 79 places, 98 transitions, 205 flow. Second operand 3 states and 213 transitions. [2024-10-31 22:03:45,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 88 transitions, 332 flow [2024-10-31 22:03:45,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 328 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:03:45,177 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 140 flow [2024-10-31 22:03:45,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-10-31 22:03:45,183 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -15 predicate places. [2024-10-31 22:03:45,184 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 140 flow [2024-10-31 22:03:45,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:45,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:45,185 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:45,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:03:45,185 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:45,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash -314409790, now seen corresponding path program 1 times [2024-10-31 22:03:45,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:45,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565444299] [2024-10-31 22:03:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:45,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:45,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:45,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565444299] [2024-10-31 22:03:45,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565444299] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:45,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:45,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:03:45,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979274980] [2024-10-31 22:03:45,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:45,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:45,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:45,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:45,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:45,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 101 [2024-10-31 22:03:45,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:45,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:45,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 101 [2024-10-31 22:03:45,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:47,383 INFO L124 PetriNetUnfolderBase]: 4048/6490 cut-off events. [2024-10-31 22:03:47,383 INFO L125 PetriNetUnfolderBase]: For 1100/1100 co-relation queries the response was YES. [2024-10-31 22:03:47,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13393 conditions, 6490 events. 4048/6490 cut-off events. For 1100/1100 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 53255 event pairs, 3658 based on Foata normal form. 0/4390 useless extension candidates. Maximal degree in co-relation 13381. Up to 5819 conditions per place. [2024-10-31 22:03:47,432 INFO L140 encePairwiseOnDemand]: 93/101 looper letters, 33 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-10-31 22:03:47,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 194 flow [2024-10-31 22:03:47,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-10-31 22:03:47,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3201320132013201 [2024-10-31 22:03:47,434 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 140 flow. Second operand 3 states and 97 transitions. [2024-10-31 22:03:47,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 50 transitions, 194 flow [2024-10-31 22:03:47,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:03:47,438 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 122 flow [2024-10-31 22:03:47,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-10-31 22:03:47,439 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -22 predicate places. [2024-10-31 22:03:47,439 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 122 flow [2024-10-31 22:03:47,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:47,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:47,440 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:47,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:03:47,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:47,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash -314409789, now seen corresponding path program 1 times [2024-10-31 22:03:47,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:47,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535255718] [2024-10-31 22:03:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:47,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:47,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:47,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535255718] [2024-10-31 22:03:47,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535255718] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:47,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:47,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:03:47,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821543802] [2024-10-31 22:03:47,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:47,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:47,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:47,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:47,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:47,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 101 [2024-10-31 22:03:47,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:47,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:47,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 101 [2024-10-31 22:03:47,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:48,155 INFO L124 PetriNetUnfolderBase]: 1238/2098 cut-off events. [2024-10-31 22:03:48,156 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-10-31 22:03:48,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4313 conditions, 2098 events. 1238/2098 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 15026 event pairs, 1040 based on Foata normal form. 88/1854 useless extension candidates. Maximal degree in co-relation 4305. Up to 1809 conditions per place. [2024-10-31 22:03:48,170 INFO L140 encePairwiseOnDemand]: 93/101 looper letters, 25 selfloop transitions, 1 changer transitions 1/43 dead transitions. [2024-10-31 22:03:48,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 162 flow [2024-10-31 22:03:48,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-31 22:03:48,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.297029702970297 [2024-10-31 22:03:48,172 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 122 flow. Second operand 3 states and 90 transitions. [2024-10-31 22:03:48,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 162 flow [2024-10-31 22:03:48,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:03:48,174 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 107 flow [2024-10-31 22:03:48,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-10-31 22:03:48,175 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -28 predicate places. [2024-10-31 22:03:48,175 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 107 flow [2024-10-31 22:03:48,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:48,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:48,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:48,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:03:48,176 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:48,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:48,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1265561778, now seen corresponding path program 1 times [2024-10-31 22:03:48,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:48,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579328789] [2024-10-31 22:03:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:48,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:48,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:48,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579328789] [2024-10-31 22:03:48,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579328789] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:48,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:48,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:03:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975740666] [2024-10-31 22:03:48,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:48,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:48,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:48,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 101 [2024-10-31 22:03:48,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:48,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:48,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 101 [2024-10-31 22:03:48,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:48,830 INFO L124 PetriNetUnfolderBase]: 1051/1839 cut-off events. [2024-10-31 22:03:48,830 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-10-31 22:03:48,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3712 conditions, 1839 events. 1051/1839 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 12978 event pairs, 151 based on Foata normal form. 0/1601 useless extension candidates. Maximal degree in co-relation 3703. Up to 1377 conditions per place. [2024-10-31 22:03:48,843 INFO L140 encePairwiseOnDemand]: 94/101 looper letters, 31 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-10-31 22:03:48,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 53 transitions, 205 flow [2024-10-31 22:03:48,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-10-31 22:03:48,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31353135313531355 [2024-10-31 22:03:48,847 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 107 flow. Second operand 3 states and 95 transitions. [2024-10-31 22:03:48,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 53 transitions, 205 flow [2024-10-31 22:03:48,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:03:48,849 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 128 flow [2024-10-31 22:03:48,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-10-31 22:03:48,850 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -27 predicate places. [2024-10-31 22:03:48,852 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 128 flow [2024-10-31 22:03:48,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:48,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:48,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:48,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:03:48,853 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:48,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash -117472616, now seen corresponding path program 1 times [2024-10-31 22:03:48,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:48,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929874063] [2024-10-31 22:03:48,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:48,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:49,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:49,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929874063] [2024-10-31 22:03:49,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929874063] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:49,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:49,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:03:49,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390906933] [2024-10-31 22:03:49,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:49,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:49,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:49,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:49,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 101 [2024-10-31 22:03:49,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:49,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:49,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 101 [2024-10-31 22:03:49,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:49,798 INFO L124 PetriNetUnfolderBase]: 972/1718 cut-off events. [2024-10-31 22:03:49,798 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2024-10-31 22:03:49,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3924 conditions, 1718 events. 972/1718 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 11911 event pairs, 123 based on Foata normal form. 0/1564 useless extension candidates. Maximal degree in co-relation 3913. Up to 1255 conditions per place. [2024-10-31 22:03:49,811 INFO L140 encePairwiseOnDemand]: 95/101 looper letters, 30 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2024-10-31 22:03:49,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 220 flow [2024-10-31 22:03:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:03:49,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-10-31 22:03:49,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27722772277227725 [2024-10-31 22:03:49,814 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 128 flow. Second operand 4 states and 112 transitions. [2024-10-31 22:03:49,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 220 flow [2024-10-31 22:03:49,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:03:49,817 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 124 flow [2024-10-31 22:03:49,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-10-31 22:03:49,818 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -27 predicate places. [2024-10-31 22:03:49,818 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 124 flow [2024-10-31 22:03:49,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:49,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:49,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:49,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:03:49,823 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:49,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash -117472617, now seen corresponding path program 1 times [2024-10-31 22:03:49,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:49,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134496976] [2024-10-31 22:03:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:49,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:49,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134496976] [2024-10-31 22:03:49,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134496976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:49,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:49,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:03:49,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182667369] [2024-10-31 22:03:49,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:49,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:49,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:49,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:49,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:49,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 101 [2024-10-31 22:03:49,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:49,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:49,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 101 [2024-10-31 22:03:49,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:50,685 INFO L124 PetriNetUnfolderBase]: 893/1597 cut-off events. [2024-10-31 22:03:50,685 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2024-10-31 22:03:50,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3634 conditions, 1597 events. 893/1597 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10924 event pairs, 95 based on Foata normal form. 42/1485 useless extension candidates. Maximal degree in co-relation 3623. Up to 1134 conditions per place. [2024-10-31 22:03:50,700 INFO L140 encePairwiseOnDemand]: 95/101 looper letters, 29 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-10-31 22:03:50,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 214 flow [2024-10-31 22:03:50,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:50,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:03:50,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-10-31 22:03:50,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2747524752475248 [2024-10-31 22:03:50,702 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 124 flow. Second operand 4 states and 111 transitions. [2024-10-31 22:03:50,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 214 flow [2024-10-31 22:03:50,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 201 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:03:50,705 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 119 flow [2024-10-31 22:03:50,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-10-31 22:03:50,706 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -28 predicate places. [2024-10-31 22:03:50,706 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 119 flow [2024-10-31 22:03:50,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:50,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:50,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:50,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:03:50,707 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:50,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:50,707 INFO L85 PathProgramCache]: Analyzing trace with hash -580456776, now seen corresponding path program 1 times [2024-10-31 22:03:50,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564789061] [2024-10-31 22:03:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:50,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:50,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:50,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564789061] [2024-10-31 22:03:50,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564789061] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:50,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:50,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:03:50,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316483054] [2024-10-31 22:03:50,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:50,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:50,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:50,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:50,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:50,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 101 [2024-10-31 22:03:50,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:50,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:50,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 101 [2024-10-31 22:03:50,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:51,405 INFO L124 PetriNetUnfolderBase]: 893/1553 cut-off events. [2024-10-31 22:03:51,406 INFO L125 PetriNetUnfolderBase]: For 258/258 co-relation queries the response was YES. [2024-10-31 22:03:51,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3589 conditions, 1553 events. 893/1553 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 10756 event pairs, 749 based on Foata normal form. 50/1425 useless extension candidates. Maximal degree in co-relation 3579. Up to 1314 conditions per place. [2024-10-31 22:03:51,418 INFO L140 encePairwiseOnDemand]: 99/101 looper letters, 22 selfloop transitions, 1 changer transitions 1/39 dead transitions. [2024-10-31 22:03:51,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 165 flow [2024-10-31 22:03:51,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:51,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-31 22:03:51,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25742574257425743 [2024-10-31 22:03:51,421 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 119 flow. Second operand 3 states and 78 transitions. [2024-10-31 22:03:51,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 165 flow [2024-10-31 22:03:51,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:03:51,423 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 110 flow [2024-10-31 22:03:51,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-10-31 22:03:51,424 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -29 predicate places. [2024-10-31 22:03:51,424 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 110 flow [2024-10-31 22:03:51,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:51,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:51,425 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:51,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:03:51,425 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:51,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:51,426 INFO L85 PathProgramCache]: Analyzing trace with hash -580455517, now seen corresponding path program 1 times [2024-10-31 22:03:51,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:51,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009708995] [2024-10-31 22:03:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:51,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:51,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:51,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009708995] [2024-10-31 22:03:51,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009708995] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:51,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:51,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:03:51,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023828323] [2024-10-31 22:03:51,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:51,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:51,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:51,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:51,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:51,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 101 [2024-10-31 22:03:51,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:51,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:51,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 101 [2024-10-31 22:03:51,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:53,126 INFO L124 PetriNetUnfolderBase]: 1848/3177 cut-off events. [2024-10-31 22:03:53,126 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-10-31 22:03:53,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7170 conditions, 3177 events. 1848/3177 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 21499 event pairs, 661 based on Foata normal form. 0/2810 useless extension candidates. Maximal degree in co-relation 7160. Up to 1702 conditions per place. [2024-10-31 22:03:53,145 INFO L140 encePairwiseOnDemand]: 91/101 looper letters, 33 selfloop transitions, 7 changer transitions 60/113 dead transitions. [2024-10-31 22:03:53,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 113 transitions, 596 flow [2024-10-31 22:03:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:03:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:03:53,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 231 transitions. [2024-10-31 22:03:53,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28589108910891087 [2024-10-31 22:03:53,147 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 110 flow. Second operand 8 states and 231 transitions. [2024-10-31 22:03:53,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 113 transitions, 596 flow [2024-10-31 22:03:53,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 113 transitions, 595 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:03:53,150 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 206 flow [2024-10-31 22:03:53,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=206, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2024-10-31 22:03:53,151 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -19 predicate places. [2024-10-31 22:03:53,151 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 206 flow [2024-10-31 22:03:53,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:53,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:53,152 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:53,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:03:53,152 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:53,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:53,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2134269652, now seen corresponding path program 1 times [2024-10-31 22:03:53,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:53,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031169662] [2024-10-31 22:03:53,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:53,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:53,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:53,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031169662] [2024-10-31 22:03:53,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031169662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:53,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:53,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:53,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432808629] [2024-10-31 22:03:53,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:53,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:03:53,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:53,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:03:53,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:03:53,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 101 [2024-10-31 22:03:53,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:53,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:53,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 101 [2024-10-31 22:03:53,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:54,520 INFO L124 PetriNetUnfolderBase]: 1940/3464 cut-off events. [2024-10-31 22:03:54,521 INFO L125 PetriNetUnfolderBase]: For 1947/1947 co-relation queries the response was YES. [2024-10-31 22:03:54,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8897 conditions, 3464 events. 1940/3464 cut-off events. For 1947/1947 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 24972 event pairs, 273 based on Foata normal form. 134/3396 useless extension candidates. Maximal degree in co-relation 8881. Up to 890 conditions per place. [2024-10-31 22:03:54,546 INFO L140 encePairwiseOnDemand]: 95/101 looper letters, 36 selfloop transitions, 3 changer transitions 62/113 dead transitions. [2024-10-31 22:03:54,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 113 transitions, 710 flow [2024-10-31 22:03:54,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:03:54,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:03:54,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-10-31 22:03:54,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2524752475247525 [2024-10-31 22:03:54,549 INFO L175 Difference]: Start difference. First operand has 60 places, 43 transitions, 206 flow. Second operand 10 states and 255 transitions. [2024-10-31 22:03:54,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 113 transitions, 710 flow [2024-10-31 22:03:54,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 113 transitions, 651 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-10-31 22:03:54,572 INFO L231 Difference]: Finished difference. Result has 68 places, 37 transitions, 155 flow [2024-10-31 22:03:54,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=155, PETRI_PLACES=68, PETRI_TRANSITIONS=37} [2024-10-31 22:03:54,573 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -11 predicate places. [2024-10-31 22:03:54,574 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 37 transitions, 155 flow [2024-10-31 22:03:54,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:54,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:54,574 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:54,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:03:54,575 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:54,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1472138504, now seen corresponding path program 1 times [2024-10-31 22:03:54,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:54,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095434734] [2024-10-31 22:03:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:54,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:54,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:54,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095434734] [2024-10-31 22:03:54,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095434734] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:54,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:54,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:03:54,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98066725] [2024-10-31 22:03:54,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:54,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:54,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:54,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:55,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 101 [2024-10-31 22:03:55,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 37 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:55,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:55,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 101 [2024-10-31 22:03:55,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:55,562 INFO L124 PetriNetUnfolderBase]: 727/1362 cut-off events. [2024-10-31 22:03:55,562 INFO L125 PetriNetUnfolderBase]: For 1364/1387 co-relation queries the response was YES. [2024-10-31 22:03:55,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3497 conditions, 1362 events. 727/1362 cut-off events. For 1364/1387 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8805 event pairs, 251 based on Foata normal form. 30/1297 useless extension candidates. Maximal degree in co-relation 3474. Up to 926 conditions per place. [2024-10-31 22:03:55,571 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 31 selfloop transitions, 2 changer transitions 23/69 dead transitions. [2024-10-31 22:03:55,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 365 flow [2024-10-31 22:03:55,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:03:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:03:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-10-31 22:03:55,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24893917963224893 [2024-10-31 22:03:55,573 INFO L175 Difference]: Start difference. First operand has 68 places, 37 transitions, 155 flow. Second operand 7 states and 176 transitions. [2024-10-31 22:03:55,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 365 flow [2024-10-31 22:03:55,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 318 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-10-31 22:03:55,582 INFO L231 Difference]: Finished difference. Result has 62 places, 37 transitions, 141 flow [2024-10-31 22:03:55,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=141, PETRI_PLACES=62, PETRI_TRANSITIONS=37} [2024-10-31 22:03:55,583 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -17 predicate places. [2024-10-31 22:03:55,583 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 37 transitions, 141 flow [2024-10-31 22:03:55,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:55,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:55,584 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:55,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:03:55,584 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:55,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:55,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1281994637, now seen corresponding path program 1 times [2024-10-31 22:03:55,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:55,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171278561] [2024-10-31 22:03:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:55,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:55,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:55,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171278561] [2024-10-31 22:03:55,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171278561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:55,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:55,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:55,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454235835] [2024-10-31 22:03:55,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:55,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:03:55,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:55,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:03:55,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:03:55,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 101 [2024-10-31 22:03:55,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 37 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:55,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:55,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 101 [2024-10-31 22:03:55,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:56,646 INFO L124 PetriNetUnfolderBase]: 1160/2102 cut-off events. [2024-10-31 22:03:56,646 INFO L125 PetriNetUnfolderBase]: For 1129/1144 co-relation queries the response was YES. [2024-10-31 22:03:56,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4921 conditions, 2102 events. 1160/2102 cut-off events. For 1129/1144 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13321 event pairs, 206 based on Foata normal form. 66/2100 useless extension candidates. Maximal degree in co-relation 4902. Up to 584 conditions per place. [2024-10-31 22:03:56,661 INFO L140 encePairwiseOnDemand]: 95/101 looper letters, 29 selfloop transitions, 3 changer transitions 39/83 dead transitions. [2024-10-31 22:03:56,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 414 flow [2024-10-31 22:03:56,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:03:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:03:56,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-10-31 22:03:56,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24752475247524752 [2024-10-31 22:03:56,663 INFO L175 Difference]: Start difference. First operand has 62 places, 37 transitions, 141 flow. Second operand 8 states and 200 transitions. [2024-10-31 22:03:56,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 414 flow [2024-10-31 22:03:56,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 380 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-10-31 22:03:56,673 INFO L231 Difference]: Finished difference. Result has 64 places, 33 transitions, 119 flow [2024-10-31 22:03:56,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=119, PETRI_PLACES=64, PETRI_TRANSITIONS=33} [2024-10-31 22:03:56,675 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -15 predicate places. [2024-10-31 22:03:56,675 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 33 transitions, 119 flow [2024-10-31 22:03:56,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:56,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:56,676 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:56,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:03:56,676 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:56,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:56,677 INFO L85 PathProgramCache]: Analyzing trace with hash -78847252, now seen corresponding path program 1 times [2024-10-31 22:03:56,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:56,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926042034] [2024-10-31 22:03:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:56,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:57,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:57,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926042034] [2024-10-31 22:03:57,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926042034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:57,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:57,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:03:57,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712236978] [2024-10-31 22:03:57,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:57,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:03:57,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:57,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:03:57,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:57,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 101 [2024-10-31 22:03:57,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 33 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:57,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:57,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 101 [2024-10-31 22:03:57,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:58,353 INFO L124 PetriNetUnfolderBase]: 344/669 cut-off events. [2024-10-31 22:03:58,353 INFO L125 PetriNetUnfolderBase]: For 571/571 co-relation queries the response was YES. [2024-10-31 22:03:58,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1590 conditions, 669 events. 344/669 cut-off events. For 571/571 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3569 event pairs, 164 based on Foata normal form. 24/684 useless extension candidates. Maximal degree in co-relation 1570. Up to 397 conditions per place. [2024-10-31 22:03:58,358 INFO L140 encePairwiseOnDemand]: 94/101 looper letters, 25 selfloop transitions, 4 changer transitions 23/66 dead transitions. [2024-10-31 22:03:58,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 317 flow [2024-10-31 22:03:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:03:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:03:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-10-31 22:03:58,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24504950495049505 [2024-10-31 22:03:58,360 INFO L175 Difference]: Start difference. First operand has 64 places, 33 transitions, 119 flow. Second operand 8 states and 198 transitions. [2024-10-31 22:03:58,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 317 flow [2024-10-31 22:03:58,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 257 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-10-31 22:03:58,363 INFO L231 Difference]: Finished difference. Result has 60 places, 35 transitions, 122 flow [2024-10-31 22:03:58,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=122, PETRI_PLACES=60, PETRI_TRANSITIONS=35} [2024-10-31 22:03:58,366 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -19 predicate places. [2024-10-31 22:03:58,366 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 35 transitions, 122 flow [2024-10-31 22:03:58,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:58,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:58,366 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:58,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:03:58,367 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:03:58,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:58,367 INFO L85 PathProgramCache]: Analyzing trace with hash 702410478, now seen corresponding path program 1 times [2024-10-31 22:03:58,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:58,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703892475] [2024-10-31 22:03:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:59,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:59,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703892475] [2024-10-31 22:03:59,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703892475] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:59,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:59,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:03:59,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266583842] [2024-10-31 22:03:59,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:59,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:03:59,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:59,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:03:59,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:59,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 101 [2024-10-31 22:03:59,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 35 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:59,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:59,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 101 [2024-10-31 22:03:59,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:00,239 INFO L124 PetriNetUnfolderBase]: 327/632 cut-off events. [2024-10-31 22:04:00,239 INFO L125 PetriNetUnfolderBase]: For 448/449 co-relation queries the response was YES. [2024-10-31 22:04:00,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 632 events. 327/632 cut-off events. For 448/449 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3297 event pairs, 26 based on Foata normal form. 16/631 useless extension candidates. Maximal degree in co-relation 1630. Up to 336 conditions per place. [2024-10-31 22:04:00,245 INFO L140 encePairwiseOnDemand]: 92/101 looper letters, 31 selfloop transitions, 7 changer transitions 23/75 dead transitions. [2024-10-31 22:04:00,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 371 flow [2024-10-31 22:04:00,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:04:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:04:00,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 259 transitions. [2024-10-31 22:04:00,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23312331233123312 [2024-10-31 22:04:00,248 INFO L175 Difference]: Start difference. First operand has 60 places, 35 transitions, 122 flow. Second operand 11 states and 259 transitions. [2024-10-31 22:04:00,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 371 flow [2024-10-31 22:04:00,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 353 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-31 22:04:00,252 INFO L231 Difference]: Finished difference. Result has 70 places, 39 transitions, 180 flow [2024-10-31 22:04:00,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=180, PETRI_PLACES=70, PETRI_TRANSITIONS=39} [2024-10-31 22:04:00,253 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -9 predicate places. [2024-10-31 22:04:00,253 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 39 transitions, 180 flow [2024-10-31 22:04:00,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:00,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:00,254 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:00,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:04:00,254 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:04:00,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:00,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1410360206, now seen corresponding path program 1 times [2024-10-31 22:04:00,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:00,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861859363] [2024-10-31 22:04:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:00,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:01,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:01,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861859363] [2024-10-31 22:04:01,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861859363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:01,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:01,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:04:01,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957585671] [2024-10-31 22:04:01,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:01,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:04:01,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:01,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:04:01,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:04:01,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 101 [2024-10-31 22:04:01,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 39 transitions, 180 flow. Second operand has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:01,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:01,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 101 [2024-10-31 22:04:01,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:02,289 INFO L124 PetriNetUnfolderBase]: 315/618 cut-off events. [2024-10-31 22:04:02,290 INFO L125 PetriNetUnfolderBase]: For 1256/1268 co-relation queries the response was YES. [2024-10-31 22:04:02,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 618 events. 315/618 cut-off events. For 1256/1268 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3308 event pairs, 32 based on Foata normal form. 12/614 useless extension candidates. Maximal degree in co-relation 1979. Up to 333 conditions per place. [2024-10-31 22:04:02,295 INFO L140 encePairwiseOnDemand]: 93/101 looper letters, 30 selfloop transitions, 9 changer transitions 15/68 dead transitions. [2024-10-31 22:04:02,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 414 flow [2024-10-31 22:04:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:04:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:04:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-10-31 22:04:02,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23542354235423543 [2024-10-31 22:04:02,299 INFO L175 Difference]: Start difference. First operand has 70 places, 39 transitions, 180 flow. Second operand 9 states and 214 transitions. [2024-10-31 22:04:02,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 414 flow [2024-10-31 22:04:02,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 361 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-10-31 22:04:02,305 INFO L231 Difference]: Finished difference. Result has 68 places, 41 transitions, 210 flow [2024-10-31 22:04:02,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=210, PETRI_PLACES=68, PETRI_TRANSITIONS=41} [2024-10-31 22:04:02,306 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -11 predicate places. [2024-10-31 22:04:02,306 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 41 transitions, 210 flow [2024-10-31 22:04:02,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:02,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:02,307 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:02,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:04:02,308 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:04:02,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash 394151544, now seen corresponding path program 2 times [2024-10-31 22:04:02,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:02,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850742661] [2024-10-31 22:04:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat