./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme --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 efd273c7d755fee5b08c1ba81e4b1fd2265522d7f0703d6f8ec42ad387cd2968 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:40,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:40,090 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:47:40,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:40,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:40,122 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:40,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:40,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:40,124 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:47:40,125 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:47:40,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:40,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:40,127 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:40,128 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:40,128 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:40,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:40,130 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:40,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:40,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:40,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:40,132 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:47:40,132 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:47:40,133 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:47:40,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:40,134 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:47:40,134 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:47:40,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:40,135 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:40,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:40,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:40,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:47:40,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:40,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:40,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:40,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:40,139 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:47:40,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:47:40,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:40,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:40,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:40,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:40,144 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_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efd273c7d755fee5b08c1ba81e4b1fd2265522d7f0703d6f8ec42ad387cd2968 [2023-11-26 11:47:40,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:40,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:40,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:40,487 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:40,487 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:40,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-11-26 11:47:43,708 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:47:43,969 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:47:43,970 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-11-26 11:47:43,990 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/data/9dacfb9cd/26961bba8ee04e69816f84722bf1ab4f/FLAG1119dbaa4 [2023-11-26 11:47:44,018 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/data/9dacfb9cd/26961bba8ee04e69816f84722bf1ab4f [2023-11-26 11:47:44,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:47:44,023 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:47:44,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:44,025 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:47:44,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:47:44,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68fcdbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44, skipping insertion in model container [2023-11-26 11:47:44,037 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,110 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:47:44,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:44,434 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:47:44,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:44,538 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:47:44,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44 WrapperNode [2023-11-26 11:47:44,539 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:44,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:44,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:47:44,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:47:44,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,592 INFO L138 Inliner]: procedures = 162, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 38 [2023-11-26 11:47:44,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:44,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:47:44,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:47:44,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:47:44,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,627 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-11-26 11:47:44,627 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,633 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:47:44,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:47:44,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:47:44,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:47:44,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (1/1) ... [2023-11-26 11:47:44,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:44,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:44,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:44,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:47:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:47:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:47:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:47:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:47:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:47:44,723 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:47:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:47:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:47:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:47:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:47:44,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:47:44,725 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:47:44,860 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:47:44,862 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:47:45,027 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:47:45,116 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:47:45,116 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:47:45,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:45 BoogieIcfgContainer [2023-11-26 11:47:45,117 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:47:45,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:47:45,131 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:47:45,134 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:47:45,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:47:44" (1/3) ... [2023-11-26 11:47:45,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9fbb7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:45, skipping insertion in model container [2023-11-26 11:47:45,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:44" (2/3) ... [2023-11-26 11:47:45,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9fbb7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:45, skipping insertion in model container [2023-11-26 11:47:45,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:45" (3/3) ... [2023-11-26 11:47:45,139 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-11-26 11:47:45,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:47:45,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 11:47:45,157 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:47:45,207 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:47:45,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 18 transitions, 40 flow [2023-11-26 11:47:45,265 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-11-26 11:47:45,265 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:47:45,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 17 events. 2/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2023-11-26 11:47:45,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 18 transitions, 40 flow [2023-11-26 11:47:45,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 17 transitions, 37 flow [2023-11-26 11:47:45,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:47:45,288 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@78271499, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:47:45,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 11:47:45,292 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:47:45,292 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 11:47:45,292 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:47:45,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:45,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:47:45,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-26 11:47:45,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:45,298 INFO L85 PathProgramCache]: Analyzing trace with hash 4411, now seen corresponding path program 1 times [2023-11-26 11:47:45,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:45,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53402347] [2023-11-26 11:47:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:45,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:45,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:45,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53402347] [2023-11-26 11:47:45,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53402347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:45,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:45,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:47:45,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375789650] [2023-11-26 11:47:45,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:45,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:45,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:45,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:45,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:45,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 18 [2023-11-26 11:47:45,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:45,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 18 [2023-11-26 11:47:45,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:45,727 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2023-11-26 11:47:45,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:47:45,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 28 events. 6/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 76 event pairs, 0 based on Foata normal form. 6/34 useless extension candidates. Maximal degree in co-relation 41. Up to 15 conditions per place. [2023-11-26 11:47:45,729 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 9 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-11-26 11:47:45,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 16 transitions, 57 flow [2023-11-26 11:47:45,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:45,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2023-11-26 11:47:45,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2023-11-26 11:47:45,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 34 transitions. [2023-11-26 11:47:45,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 34 transitions. [2023-11-26 11:47:45,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:45,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 34 transitions. [2023-11-26 11:47:45,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,755 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,756 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 37 flow. Second operand 3 states and 34 transitions. [2023-11-26 11:47:45,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 16 transitions, 57 flow [2023-11-26 11:47:45,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:47:45,776 INFO L231 Difference]: Finished difference. Result has 18 places, 13 transitions, 32 flow [2023-11-26 11:47:45,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=18, PETRI_TRANSITIONS=13} [2023-11-26 11:47:45,782 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2023-11-26 11:47:45,782 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 13 transitions, 32 flow [2023-11-26 11:47:45,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:45,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:47:45,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:47:45,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-26 11:47:45,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:45,786 INFO L85 PathProgramCache]: Analyzing trace with hash 4412, now seen corresponding path program 1 times [2023-11-26 11:47:45,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:45,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283778032] [2023-11-26 11:47:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:45,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:45,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:45,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283778032] [2023-11-26 11:47:45,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283778032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:45,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:45,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:47:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054981124] [2023-11-26 11:47:45,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:45,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:45,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:45,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:45,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 18 [2023-11-26 11:47:45,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:45,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 18 [2023-11-26 11:47:45,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:45,980 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2023-11-26 11:47:45,980 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:47:45,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 26 events. 6/26 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 69 event pairs, 1 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 44. Up to 15 conditions per place. [2023-11-26 11:47:45,981 INFO L140 encePairwiseOnDemand]: 15/18 looper letters, 8 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-11-26 11:47:45,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 56 flow [2023-11-26 11:47:45,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2023-11-26 11:47:45,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2023-11-26 11:47:45,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 32 transitions. [2023-11-26 11:47:45,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 32 transitions. [2023-11-26 11:47:45,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:45,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 32 transitions. [2023-11-26 11:47:45,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,986 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 32 flow. Second operand 3 states and 32 transitions. [2023-11-26 11:47:45,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 56 flow [2023-11-26 11:47:45,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:45,988 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 30 flow [2023-11-26 11:47:45,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-11-26 11:47:45,989 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-11-26 11:47:45,989 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 30 flow [2023-11-26 11:47:45,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:45,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:47:45,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:47:45,991 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-26 11:47:45,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:45,992 INFO L85 PathProgramCache]: Analyzing trace with hash 131497734, now seen corresponding path program 1 times [2023-11-26 11:47:45,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:45,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540782008] [2023-11-26 11:47:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:45,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:46,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:46,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540782008] [2023-11-26 11:47:46,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540782008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:46,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:46,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955175310] [2023-11-26 11:47:46,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:46,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:46,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:46,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:46,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 18 [2023-11-26 11:47:46,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 30 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:46,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:46,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 18 [2023-11-26 11:47:46,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:46,209 INFO L124 PetriNetUnfolderBase]: 6/23 cut-off events. [2023-11-26 11:47:46,210 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:47:46,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 23 events. 6/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 48 event pairs, 1 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 41. Up to 14 conditions per place. [2023-11-26 11:47:46,211 INFO L140 encePairwiseOnDemand]: 15/18 looper letters, 6 selfloop transitions, 2 changer transitions 3/14 dead transitions. [2023-11-26 11:47:46,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 54 flow [2023-11-26 11:47:46,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:47:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 39 transitions. [2023-11-26 11:47:46,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-11-26 11:47:46,214 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 39 transitions. [2023-11-26 11:47:46,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 39 transitions. [2023-11-26 11:47:46,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:46,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 39 transitions. [2023-11-26 11:47:46,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:46,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:46,218 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:46,218 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 30 flow. Second operand 4 states and 39 transitions. [2023-11-26 11:47:46,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 54 flow [2023-11-26 11:47:46,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:46,219 INFO L231 Difference]: Finished difference. Result has 17 places, 9 transitions, 24 flow [2023-11-26 11:47:46,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=24, PETRI_PLACES=17, PETRI_TRANSITIONS=9} [2023-11-26 11:47:46,221 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-11-26 11:47:46,221 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 9 transitions, 24 flow [2023-11-26 11:47:46,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:46,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:46,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:46,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:47:46,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-26 11:47:46,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:46,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1815669475, now seen corresponding path program 1 times [2023-11-26 11:47:46,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:46,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680540002] [2023-11-26 11:47:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:46,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:46,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:46,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:46,279 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:47:46,281 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2023-11-26 11:47:46,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-11-26 11:47:46,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-11-26 11:47:46,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-11-26 11:47:46,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-26 11:47:46,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-11-26 11:47:46,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:47:46,291 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-26 11:47:46,306 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:47:46,306 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:47:46,323 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre2 could not be translated [2023-11-26 11:47:46,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:47:46 BasicIcfg [2023-11-26 11:47:46,332 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:47:46,333 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:47:46,333 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:47:46,333 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:47:46,334 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:45" (3/4) ... [2023-11-26 11:47:46,335 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:47:46,337 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:47:46,338 INFO L158 Benchmark]: Toolchain (without parser) took 2314.65ms. Allocated memory is still 178.3MB. Free memory was 131.1MB in the beginning and 108.3MB in the end (delta: 22.8MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2023-11-26 11:47:46,340 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory was 66.9MB in the beginning and 66.7MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:47:46,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.40ms. Allocated memory is still 178.3MB. Free memory was 130.5MB in the beginning and 111.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 11:47:46,343 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.14ms. Allocated memory is still 178.3MB. Free memory was 111.6MB in the beginning and 109.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:46,344 INFO L158 Benchmark]: Boogie Preprocessor took 53.20ms. Allocated memory is still 178.3MB. Free memory was 109.5MB in the beginning and 108.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:46,344 INFO L158 Benchmark]: RCFGBuilder took 469.52ms. Allocated memory is still 178.3MB. Free memory was 108.0MB in the beginning and 92.0MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 11:47:46,344 INFO L158 Benchmark]: TraceAbstraction took 1212.08ms. Allocated memory is still 178.3MB. Free memory was 91.2MB in the beginning and 109.4MB in the end (delta: -18.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:47:46,345 INFO L158 Benchmark]: Witness Printer took 4.09ms. Allocated memory is still 178.3MB. Free memory was 109.4MB in the beginning and 108.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:46,346 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory was 66.9MB in the beginning and 66.7MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 515.40ms. Allocated memory is still 178.3MB. Free memory was 130.5MB in the beginning and 111.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.14ms. Allocated memory is still 178.3MB. Free memory was 111.6MB in the beginning and 109.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.20ms. Allocated memory is still 178.3MB. Free memory was 109.5MB in the beginning and 108.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 469.52ms. Allocated memory is still 178.3MB. Free memory was 108.0MB in the beginning and 92.0MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1212.08ms. Allocated memory is still 178.3MB. Free memory was 91.2MB in the beginning and 109.4MB in the end (delta: -18.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.09ms. Allocated memory is still 178.3MB. Free memory was 109.4MB in the beginning and 108.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre2 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={3:0}, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(!(x == 3)) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "36-apron_41-threadenter-no-locals_unknown_1_neg.c", 3, __extension__ __PRETTY_FUNCTION__) - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 687]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 690]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 26 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 61 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-26 11:47:46,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme --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 efd273c7d755fee5b08c1ba81e4b1fd2265522d7f0703d6f8ec42ad387cd2968 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:49,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:49,303 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 11:47:49,311 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:49,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:49,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:49,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:49,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:49,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:47:49,380 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:47:49,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:49,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:49,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:49,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:49,384 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:49,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:49,385 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:49,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:49,386 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:49,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:49,388 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:47:49,388 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:47:49,389 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:47:49,389 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:49,390 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:47:49,390 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:47:49,391 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:47:49,391 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:47:49,392 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:49,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:49,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:49,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:49,395 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:47:49,396 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:49,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:49,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:49,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:49,398 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:47:49,398 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:47:49,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:49,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:49,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:49,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:49,400 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:47:49,401 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_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efd273c7d755fee5b08c1ba81e4b1fd2265522d7f0703d6f8ec42ad387cd2968 [2023-11-26 11:47:49,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:49,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:49,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:49,828 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:49,828 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:49,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-11-26 11:47:52,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:47:53,222 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:47:53,223 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-11-26 11:47:53,246 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/data/cba20d1e2/eaab3fbb59874660bda2826a0d17562a/FLAGe8fea5e1d [2023-11-26 11:47:53,261 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/data/cba20d1e2/eaab3fbb59874660bda2826a0d17562a [2023-11-26 11:47:53,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:47:53,270 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:47:53,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:53,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:47:53,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:47:53,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:53,280 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222ef673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53, skipping insertion in model container [2023-11-26 11:47:53,280 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:53,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:47:53,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:53,781 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:47:53,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:53,942 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:47:53,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53 WrapperNode [2023-11-26 11:47:53,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:53,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:53,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:47:53,945 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:47:53,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:53,986 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:54,016 INFO L138 Inliner]: procedures = 165, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 38 [2023-11-26 11:47:54,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:54,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:47:54,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:47:54,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:47:54,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:54,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:54,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:54,065 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-11-26 11:47:54,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:54,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:54,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:54,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:54,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:54,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:54,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:47:54,109 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:47:54,110 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:47:54,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:47:54,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (1/1) ... [2023-11-26 11:47:54,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:54,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:54,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:54,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:47:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:47:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:47:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:47:54,191 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:47:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:47:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 11:47:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 11:47:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:47:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 11:47:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:47:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:47:54,194 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:47:54,345 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:47:54,347 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:47:54,570 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:47:54,716 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:47:54,716 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:47:54,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:54 BoogieIcfgContainer [2023-11-26 11:47:54,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:47:54,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:47:54,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:47:54,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:47:54,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:47:53" (1/3) ... [2023-11-26 11:47:54,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a169e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:54, skipping insertion in model container [2023-11-26 11:47:54,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:53" (2/3) ... [2023-11-26 11:47:54,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a169e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:54, skipping insertion in model container [2023-11-26 11:47:54,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:54" (3/3) ... [2023-11-26 11:47:54,728 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-11-26 11:47:54,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:47:54,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 11:47:54,758 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:47:54,807 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:47:54,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 18 transitions, 40 flow [2023-11-26 11:47:54,898 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-11-26 11:47:54,898 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:47:54,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 17 events. 2/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2023-11-26 11:47:54,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 18 transitions, 40 flow [2023-11-26 11:47:54,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 17 transitions, 37 flow [2023-11-26 11:47:54,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:47:54,941 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6497a1fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:47:54,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 11:47:54,946 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:47:54,946 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 11:47:54,946 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:47:54,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:54,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:47:54,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-26 11:47:54,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:54,955 INFO L85 PathProgramCache]: Analyzing trace with hash 4411, now seen corresponding path program 1 times [2023-11-26 11:47:54,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:47:54,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340436589] [2023-11-26 11:47:54,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:54,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:54,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:47:54,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:47:55,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 11:47:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:55,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:47:55,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:55,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-26 11:47:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:55,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:47:55,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:47:55,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340436589] [2023-11-26 11:47:55,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340436589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:55,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:55,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:47:55,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172433735] [2023-11-26 11:47:55,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:55,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:55,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:47:55,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:55,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:55,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 18 [2023-11-26 11:47:55,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:55,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:55,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 18 [2023-11-26 11:47:55,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:55,295 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2023-11-26 11:47:55,295 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:47:55,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 28 events. 6/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 76 event pairs, 0 based on Foata normal form. 6/34 useless extension candidates. Maximal degree in co-relation 41. Up to 15 conditions per place. [2023-11-26 11:47:55,297 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 9 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-11-26 11:47:55,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 16 transitions, 57 flow [2023-11-26 11:47:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2023-11-26 11:47:55,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2023-11-26 11:47:55,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 34 transitions. [2023-11-26 11:47:55,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 34 transitions. [2023-11-26 11:47:55,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:55,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 34 transitions. [2023-11-26 11:47:55,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:55,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:55,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:55,328 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 37 flow. Second operand 3 states and 34 transitions. [2023-11-26 11:47:55,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 16 transitions, 57 flow [2023-11-26 11:47:55,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:47:55,333 INFO L231 Difference]: Finished difference. Result has 18 places, 13 transitions, 32 flow [2023-11-26 11:47:55,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=18, PETRI_TRANSITIONS=13} [2023-11-26 11:47:55,339 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2023-11-26 11:47:55,339 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 13 transitions, 32 flow [2023-11-26 11:47:55,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:55,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:55,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:47:55,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:55,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:55,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-26 11:47:55,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:55,544 INFO L85 PathProgramCache]: Analyzing trace with hash 4412, now seen corresponding path program 1 times [2023-11-26 11:47:55,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:47:55,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110328573] [2023-11-26 11:47:55,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:55,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:55,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:47:55,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:47:55,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-26 11:47:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:55,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:47:55,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:55,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-26 11:47:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:55,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:47:55,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:47:55,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110328573] [2023-11-26 11:47:55,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110328573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:55,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:55,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:47:55,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537575230] [2023-11-26 11:47:55,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:55,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:55,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:47:55,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:55,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:55,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 18 [2023-11-26 11:47:55,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:55,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:55,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 18 [2023-11-26 11:47:55,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:55,738 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2023-11-26 11:47:55,738 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:47:55,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 26 events. 6/26 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 67 event pairs, 1 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 44. Up to 15 conditions per place. [2023-11-26 11:47:55,740 INFO L140 encePairwiseOnDemand]: 15/18 looper letters, 8 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-11-26 11:47:55,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 56 flow [2023-11-26 11:47:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2023-11-26 11:47:55,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2023-11-26 11:47:55,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 32 transitions. [2023-11-26 11:47:55,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 32 transitions. [2023-11-26 11:47:55,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:55,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 32 transitions. [2023-11-26 11:47:55,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:55,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:55,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:55,755 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 32 flow. Second operand 3 states and 32 transitions. [2023-11-26 11:47:55,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 56 flow [2023-11-26 11:47:55,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:55,764 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 30 flow [2023-11-26 11:47:55,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-11-26 11:47:55,766 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-11-26 11:47:55,767 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 30 flow [2023-11-26 11:47:55,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:55,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:55,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:47:55,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-26 11:47:55,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:55,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-26 11:47:55,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:55,972 INFO L85 PathProgramCache]: Analyzing trace with hash 131497734, now seen corresponding path program 1 times [2023-11-26 11:47:55,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:47:55,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117555507] [2023-11-26 11:47:55,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:55,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:55,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:47:55,976 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:47:55,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-26 11:47:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:56,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:47:56,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:56,162 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id~0#1.base_33| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id~0#1.base_33| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id~0#1.base_33|) (_ bv0 1)))) is different from true [2023-11-26 11:47:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:56,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:47:56,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:47:56,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117555507] [2023-11-26 11:47:56,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117555507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:56,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:56,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:56,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189408207] [2023-11-26 11:47:56,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:56,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:56,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:47:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:56,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 11:47:56,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 18 [2023-11-26 11:47:56,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 30 flow. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:56,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:56,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 18 [2023-11-26 11:47:56,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:56,243 INFO L124 PetriNetUnfolderBase]: 10/36 cut-off events. [2023-11-26 11:47:56,243 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:47:56,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 36 events. 10/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 104 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 64. Up to 21 conditions per place. [2023-11-26 11:47:56,245 INFO L140 encePairwiseOnDemand]: 11/18 looper letters, 9 selfloop transitions, 6 changer transitions 1/19 dead transitions. [2023-11-26 11:47:56,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 76 flow [2023-11-26 11:47:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:47:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2023-11-26 11:47:56,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-26 11:47:56,248 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 33 transitions. [2023-11-26 11:47:56,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 33 transitions. [2023-11-26 11:47:56,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:56,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 33 transitions. [2023-11-26 11:47:56,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:56,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:56,253 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:56,253 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 30 flow. Second operand 4 states and 33 transitions. [2023-11-26 11:47:56,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 76 flow [2023-11-26 11:47:56,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 19 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:56,256 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 61 flow [2023-11-26 11:47:56,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=61, PETRI_PLACES=19, PETRI_TRANSITIONS=16} [2023-11-26 11:47:56,258 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 0 predicate places. [2023-11-26 11:47:56,258 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 61 flow [2023-11-26 11:47:56,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:56,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:56,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:47:56,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:56,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:56,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-26 11:47:56,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:56,462 INFO L85 PathProgramCache]: Analyzing trace with hash -218537251, now seen corresponding path program 1 times [2023-11-26 11:47:56,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:47:56,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000651260] [2023-11-26 11:47:56,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:56,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:56,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:47:56,464 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:47:56,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-26 11:47:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:56,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:47:56,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:56,607 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id~0#1.base_34| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id~0#1.base_34|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id~0#1.base_34| (_ bv0 1))))) is different from true [2023-11-26 11:47:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:56,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:47:56,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:47:56,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000651260] [2023-11-26 11:47:56,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000651260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:56,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:56,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:56,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548328046] [2023-11-26 11:47:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:56,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:56,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:47:56,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:56,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 11:47:56,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 18 [2023-11-26 11:47:56,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:56,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:56,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 18 [2023-11-26 11:47:56,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:56,673 INFO L124 PetriNetUnfolderBase]: 8/33 cut-off events. [2023-11-26 11:47:56,673 INFO L125 PetriNetUnfolderBase]: For 7/9 co-relation queries the response was YES. [2023-11-26 11:47:56,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 33 events. 8/33 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 89 event pairs, 0 based on Foata normal form. 2/33 useless extension candidates. Maximal degree in co-relation 85. Up to 21 conditions per place. [2023-11-26 11:47:56,675 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 9 selfloop transitions, 8 changer transitions 2/22 dead transitions. [2023-11-26 11:47:56,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 22 transitions, 123 flow [2023-11-26 11:47:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:56,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:47:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2023-11-26 11:47:56,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-26 11:47:56,677 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 33 transitions. [2023-11-26 11:47:56,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 33 transitions. [2023-11-26 11:47:56,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:56,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 33 transitions. [2023-11-26 11:47:56,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:56,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:56,679 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:56,680 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 61 flow. Second operand 4 states and 33 transitions. [2023-11-26 11:47:56,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 22 transitions, 123 flow [2023-11-26 11:47:56,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 22 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:56,682 INFO L231 Difference]: Finished difference. Result has 21 places, 18 transitions, 91 flow [2023-11-26 11:47:56,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=21, PETRI_TRANSITIONS=18} [2023-11-26 11:47:56,683 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-11-26 11:47:56,684 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 18 transitions, 91 flow [2023-11-26 11:47:56,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:56,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:56,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:56,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:56,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:56,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-26 11:47:56,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1815654954, now seen corresponding path program 1 times [2023-11-26 11:47:56,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:47:56,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857304403] [2023-11-26 11:47:56,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:56,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:56,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:47:56,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:47:56,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-26 11:47:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:56,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:47:56,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:57,017 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id~0#1.base_35| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id~0#1.base_35|) (_ bv0 1)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id~0#1.base_35| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-26 11:47:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:57,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:47:57,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:47:57,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857304403] [2023-11-26 11:47:57,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857304403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:57,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:57,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:57,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427919170] [2023-11-26 11:47:57,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:57,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:57,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:47:57,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:57,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 11:47:57,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 18 [2023-11-26 11:47:57,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:57,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:57,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 18 [2023-11-26 11:47:57,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:57,116 INFO L124 PetriNetUnfolderBase]: 6/32 cut-off events. [2023-11-26 11:47:57,125 INFO L125 PetriNetUnfolderBase]: For 15/18 co-relation queries the response was YES. [2023-11-26 11:47:57,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 32 events. 6/32 cut-off events. For 15/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 92 event pairs, 0 based on Foata normal form. 3/33 useless extension candidates. Maximal degree in co-relation 97. Up to 19 conditions per place. [2023-11-26 11:47:57,126 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 12 selfloop transitions, 6 changer transitions 0/21 dead transitions. [2023-11-26 11:47:57,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 143 flow [2023-11-26 11:47:57,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:57,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:47:57,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2023-11-26 11:47:57,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-11-26 11:47:57,128 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 32 transitions. [2023-11-26 11:47:57,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 32 transitions. [2023-11-26 11:47:57,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:57,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 32 transitions. [2023-11-26 11:47:57,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:57,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:57,132 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:57,132 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 91 flow. Second operand 4 states and 32 transitions. [2023-11-26 11:47:57,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 143 flow [2023-11-26 11:47:57,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:57,135 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 109 flow [2023-11-26 11:47:57,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-11-26 11:47:57,137 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-11-26 11:47:57,138 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 109 flow [2023-11-26 11:47:57,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:57,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:57,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:57,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:57,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:57,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-26 11:47:57,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:57,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1815669475, now seen corresponding path program 1 times [2023-11-26 11:47:57,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:47:57,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771399033] [2023-11-26 11:47:57,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:57,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:57,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:47:57,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:47:57,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-26 11:47:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:57,414 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:57,449 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-26 11:47:57,449 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:47:57,450 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2023-11-26 11:47:57,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-11-26 11:47:57,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-11-26 11:47:57,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-11-26 11:47:57,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-26 11:47:57,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-11-26 11:47:57,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:57,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:57,655 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-26 11:47:57,660 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:47:57,660 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:47:57,674 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre2 could not be translated [2023-11-26 11:47:57,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:47:57 BasicIcfg [2023-11-26 11:47:57,682 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:47:57,682 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:47:57,682 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:47:57,682 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:47:57,683 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:54" (3/4) ... [2023-11-26 11:47:57,685 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:47:57,686 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:47:57,687 INFO L158 Benchmark]: Toolchain (without parser) took 4416.40ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 51.2MB in the beginning and 43.2MB in the end (delta: 8.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-26 11:47:57,687 INFO L158 Benchmark]: CDTParser took 1.35ms. Allocated memory is still 56.6MB. Free memory was 33.0MB in the beginning and 32.9MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:47:57,688 INFO L158 Benchmark]: CACSL2BoogieTranslator took 671.25ms. Allocated memory is still 75.5MB. Free memory was 51.1MB in the beginning and 48.2MB in the end (delta: 2.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 11:47:57,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.07ms. Allocated memory is still 75.5MB. Free memory was 48.2MB in the beginning and 46.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:57,689 INFO L158 Benchmark]: Boogie Preprocessor took 90.92ms. Allocated memory is still 75.5MB. Free memory was 46.1MB in the beginning and 44.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:57,689 INFO L158 Benchmark]: RCFGBuilder took 607.53ms. Allocated memory is still 75.5MB. Free memory was 44.0MB in the beginning and 46.1MB in the end (delta: -2.1MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2023-11-26 11:47:57,690 INFO L158 Benchmark]: TraceAbstraction took 2962.69ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 45.3MB in the beginning and 43.2MB in the end (delta: 2.1MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2023-11-26 11:47:57,690 INFO L158 Benchmark]: Witness Printer took 4.05ms. Allocated memory is still 92.3MB. Free memory is still 43.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:47:57,693 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.35ms. Allocated memory is still 56.6MB. Free memory was 33.0MB in the beginning and 32.9MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 671.25ms. Allocated memory is still 75.5MB. Free memory was 51.1MB in the beginning and 48.2MB in the end (delta: 2.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.07ms. Allocated memory is still 75.5MB. Free memory was 48.2MB in the beginning and 46.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.92ms. Allocated memory is still 75.5MB. Free memory was 46.1MB in the beginning and 44.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 607.53ms. Allocated memory is still 75.5MB. Free memory was 44.0MB in the beginning and 46.1MB in the end (delta: -2.1MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2962.69ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 45.3MB in the beginning and 43.2MB in the end (delta: 2.1MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Witness Printer took 4.05ms. Allocated memory is still 92.3MB. Free memory is still 43.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre2 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={3:0}, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(!(x == 3)) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "36-apron_41-threadenter-no-locals_unknown_1_neg.c", 3, __extension__ __PRETTY_FUNCTION__) - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 687]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 690]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 26 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 75 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=5, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 17 ConstructedInterpolants, 5 QuantifiedInterpolants, 221 SizeOfPredicates, 0 NumberOfNonLiveVariables, 171 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-26 11:47:57,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfcb562-78a6-4290-8b99-5121d589a03e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample