./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-figure3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-figure3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a479da07a0fc6d1ad250c3f67241d6294523a3c8fee4f6d465a7a5bdc9204f86 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-22 08:54:52,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 08:54:52,178 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-11-22 08:54:52,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 08:54:52,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 08:54:52,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 08:54:52,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 08:54:52,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 08:54:52,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 08:54:52,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 08:54:52,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 08:54:52,229 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 08:54:52,230 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 08:54:52,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 08:54:52,232 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 08:54:52,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 08:54:52,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 08:54:52,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 08:54:52,233 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-22 08:54:52,233 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-22 08:54:52,234 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-22 08:54:52,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 08:54:52,235 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-22 08:54:52,235 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-22 08:54:52,236 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 08:54:52,236 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 08:54:52,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 08:54:52,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 08:54:52,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 08:54:52,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 08:54:52,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 08:54:52,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 08:54:52,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 08:54:52,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 08:54:52,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 08:54:52,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 08:54:52,240 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-22 08:54:52,240 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-22 08:54:52,240 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-22 08:54:52,241 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-22 08:54:52,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a479da07a0fc6d1ad250c3f67241d6294523a3c8fee4f6d465a7a5bdc9204f86 [2023-11-22 08:54:52,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 08:54:52,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 08:54:52,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 08:54:52,594 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 08:54:52,594 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 08:54:52,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/../../sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2023-11-22 08:54:55,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 08:54:56,015 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 08:54:56,016 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2023-11-22 08:54:56,025 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/data/7e64d4621/c4096ddef68443d6bad90473b1e3f607/FLAG2a376aad4 [2023-11-22 08:54:56,044 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/data/7e64d4621/c4096ddef68443d6bad90473b1e3f607 [2023-11-22 08:54:56,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 08:54:56,050 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 08:54:56,055 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 08:54:56,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 08:54:56,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 08:54:56,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a55a3b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56, skipping insertion in model container [2023-11-22 08:54:56,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,091 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 08:54:56,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 08:54:56,298 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 08:54:56,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 08:54:56,333 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 08:54:56,333 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 08:54:56,342 INFO L206 MainTranslator]: Completed translation [2023-11-22 08:54:56,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56 WrapperNode [2023-11-22 08:54:56,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 08:54:56,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 08:54:56,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 08:54:56,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 08:54:56,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,382 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 77 [2023-11-22 08:54:56,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 08:54:56,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 08:54:56,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 08:54:56,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 08:54:56,393 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,402 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,407 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 08:54:56,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 08:54:56,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 08:54:56,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 08:54:56,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56" (1/1) ... [2023-11-22 08:54:56,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 08:54:56,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:54:56,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 08:54:56,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 08:54:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 08:54:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-22 08:54:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-22 08:54:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-22 08:54:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-22 08:54:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 08:54:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 08:54:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 08:54:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-22 08:54:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-22 08:54:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 08:54:56,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 08:54:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 08:54:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 08:54:56,495 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-22 08:54:56,595 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 08:54:56,597 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 08:54:56,833 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 08:54:57,038 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 08:54:57,038 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-22 08:54:57,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:54:57 BoogieIcfgContainer [2023-11-22 08:54:57,039 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 08:54:57,042 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 08:54:57,042 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 08:54:57,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 08:54:57,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:54:56" (1/3) ... [2023-11-22 08:54:57,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d337523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:54:57, skipping insertion in model container [2023-11-22 08:54:57,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:54:56" (2/3) ... [2023-11-22 08:54:57,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d337523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:54:57, skipping insertion in model container [2023-11-22 08:54:57,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:54:57" (3/3) ... [2023-11-22 08:54:57,049 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2023-11-22 08:54:57,069 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 08:54:57,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-22 08:54:57,069 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-22 08:54:57,134 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-22 08:54:57,179 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:54:57,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-22 08:54:57,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:54:57,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-22 08:54:57,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-22 08:54:57,234 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-22 08:54:57,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-22 08:54:57,254 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=PARTIAL_ORDER_FA, 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;@7c5441fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:54:57,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-22 08:54:57,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-22 08:54:57,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:54:57,523 INFO L85 PathProgramCache]: Analyzing trace with hash -172119552, now seen corresponding path program 1 times [2023-11-22 08:54:57,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:54:57,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460216386] [2023-11-22 08:54:57,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:54:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:54:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:54:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:54:58,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:54:58,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460216386] [2023-11-22 08:54:58,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460216386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:54:58,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:54:58,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 08:54:58,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733960196] [2023-11-22 08:54:58,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:54:58,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:54:58,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:54:58,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:54:58,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:54:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:54:58,111 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:54:58,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2023-11-22 08:54:58,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:54:58,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:54:58,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 08:54:58,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-22 08:54:58,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:54:58,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1247683834, now seen corresponding path program 1 times [2023-11-22 08:54:58,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:54:58,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011113734] [2023-11-22 08:54:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:54:58,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:54:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:54:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:54:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:54:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011113734] [2023-11-22 08:54:58,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011113734] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:54:58,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693471795] [2023-11-22 08:54:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:54:58,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:54:58,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:54:58,770 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:54:58,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 08:54:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:54:58,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 08:54:58,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:54:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:54:59,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:54:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:54:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693471795] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:54:59,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:54:59,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-22 08:54:59,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104859688] [2023-11-22 08:54:59,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:54:59,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 08:54:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:54:59,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 08:54:59,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-22 08:54:59,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:54:59,243 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:54:59,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2023-11-22 08:54:59,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:54:59,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:54:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:54:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 08:54:59,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 08:54:59,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:54:59,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-22 08:54:59,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:54:59,827 INFO L85 PathProgramCache]: Analyzing trace with hash 646644329, now seen corresponding path program 2 times [2023-11-22 08:54:59,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:54:59,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211279700] [2023-11-22 08:54:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:54:59,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:54:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:55:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:55:00,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:55:00,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211279700] [2023-11-22 08:55:00,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211279700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:55:00,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080222528] [2023-11-22 08:55:00,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 08:55:00,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:55:00,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:55:00,237 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:55:00,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 08:55:00,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 08:55:00,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:55:00,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-22 08:55:00,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:55:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:55:00,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:55:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:55:00,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080222528] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:55:00,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:55:00,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 16 [2023-11-22 08:55:00,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470741243] [2023-11-22 08:55:00,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:55:00,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-22 08:55:00,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:55:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-22 08:55:00,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-22 08:55:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:55:00,693 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:55:00,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 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) [2023-11-22 08:55:00,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:55:00,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-11-22 08:55:00,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:55:01,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:55:01,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 08:55:01,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-22 08:55:01,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 08:55:01,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:55:01,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-22 08:55:01,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:55:01,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2120150567, now seen corresponding path program 3 times [2023-11-22 08:55:01,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:55:01,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540261353] [2023-11-22 08:55:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:55:01,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:55:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:55:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:55:01,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:55:01,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540261353] [2023-11-22 08:55:01,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540261353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:55:01,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855280309] [2023-11-22 08:55:01,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 08:55:01,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:55:01,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:55:01,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:55:02,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 08:55:02,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-22 08:55:02,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:55:02,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-22 08:55:02,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:55:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:55:02,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:55:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:55:02,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855280309] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:55:02,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:55:02,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2023-11-22 08:55:02,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78294453] [2023-11-22 08:55:02,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:55:02,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-22 08:55:02,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:55:02,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-22 08:55:02,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2023-11-22 08:55:02,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:55:02,642 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:55:02,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:55:02,643 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:55:02,643 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-11-22 08:55:02,643 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2023-11-22 08:55:02,643 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:55:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:55:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 08:55:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-22 08:55:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-22 08:55:03,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 08:55:03,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-22 08:55:03,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-22 08:55:03,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:55:03,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2028855888, now seen corresponding path program 4 times [2023-11-22 08:55:03,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:55:03,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888617246] [2023-11-22 08:55:03,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:55:03,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:55:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:55:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:55:04,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:55:04,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888617246] [2023-11-22 08:55:04,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888617246] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:55:04,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934117121] [2023-11-22 08:55:04,538 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-22 08:55:04,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:55:04,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:55:04,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:55:04,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 08:55:04,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-22 08:55:04,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:55:04,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-22 08:55:04,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:55:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 08:55:04,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:55:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 08:55:05,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934117121] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:55:05,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:55:05,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 37 [2023-11-22 08:55:05,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515912367] [2023-11-22 08:55:05,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:55:05,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-22 08:55:05,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:55:05,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-22 08:55:05,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1148, Unknown=0, NotChecked=0, Total=1332 [2023-11-22 08:55:05,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:55:05,477 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:55:05,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.135135135135135) internal successors, (116), 37 states have internal predecessors, (116), 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) [2023-11-22 08:55:05,478 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:55:05,478 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-11-22 08:55:05,478 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2023-11-22 08:55:05,478 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-11-22 08:55:05,478 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:55:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:55:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 08:55:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-22 08:55:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-22 08:55:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-22 08:55:07,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 08:55:07,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:55:07,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-22 08:55:07,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:55:07,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1946850487, now seen corresponding path program 5 times [2023-11-22 08:55:07,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:55:07,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677614407] [2023-11-22 08:55:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:55:07,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:55:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:55:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:55:09,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:55:09,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677614407] [2023-11-22 08:55:09,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677614407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:55:09,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634883068] [2023-11-22 08:55:09,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-22 08:55:09,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:55:09,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:55:09,093 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:55:09,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 08:55:09,763 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-11-22 08:55:09,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:55:09,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-22 08:55:09,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:55:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 309 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 08:55:10,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:55:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 309 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 08:55:11,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634883068] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:55:11,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:55:11,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 21] total 54 [2023-11-22 08:55:11,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070655796] [2023-11-22 08:55:11,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:55:11,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-22 08:55:11,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:55:11,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-22 08:55:11,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=2518, Unknown=0, NotChecked=0, Total=2862 [2023-11-22 08:55:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:55:11,268 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:55:11,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.0925925925925926) internal successors, (167), 54 states have internal predecessors, (167), 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) [2023-11-22 08:55:11,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:55:11,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-11-22 08:55:11,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2023-11-22 08:55:11,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-11-22 08:55:11,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2023-11-22 08:55:11,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:55:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:55:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 08:55:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-22 08:55:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-22 08:55:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-22 08:55:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-22 08:55:15,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 08:55:16,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-22 08:55:16,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-22 08:55:16,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:55:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1492201703, now seen corresponding path program 6 times [2023-11-22 08:55:16,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:55:16,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231503335] [2023-11-22 08:55:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:55:16,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:55:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:55:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 898 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:55:18,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:55:18,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231503335] [2023-11-22 08:55:18,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231503335] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:55:18,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259418076] [2023-11-22 08:55:18,865 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-22 08:55:18,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:55:18,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:55:18,866 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:55:18,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 08:55:19,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2023-11-22 08:55:19,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:55:19,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-22 08:55:19,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:55:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 814 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-22 08:55:20,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:55:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 814 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-22 08:55:22,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259418076] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:55:22,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:55:22,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 31, 31] total 82 [2023-11-22 08:55:22,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774026323] [2023-11-22 08:55:22,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:55:22,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-11-22 08:55:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:55:22,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-11-22 08:55:22,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=5934, Unknown=0, NotChecked=0, Total=6642 [2023-11-22 08:55:22,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:55:22,592 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:55:22,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 3.0609756097560976) internal successors, (251), 82 states have internal predecessors, (251), 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) [2023-11-22 08:55:22,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:55:22,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-11-22 08:55:22,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2023-11-22 08:55:22,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-11-22 08:55:22,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2023-11-22 08:55:22,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2023-11-22 08:55:22,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:55:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:55:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 08:55:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-22 08:55:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-22 08:55:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-22 08:55:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-22 08:55:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-11-22 08:55:34,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 08:55:34,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:55:34,316 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-22 08:55:34,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:55:34,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1307272816, now seen corresponding path program 7 times [2023-11-22 08:55:34,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:55:34,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168146644] [2023-11-22 08:55:34,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:55:34,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:55:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:55:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2368 backedges. 0 proven. 2368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:55:39,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:55:39,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168146644] [2023-11-22 08:55:39,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168146644] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:55:39,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88018269] [2023-11-22 08:55:39,145 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-22 08:55:39,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:55:39,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:55:39,146 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:55:39,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7eca777-b0cd-4b2d-9033-953de1260d35/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 08:55:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:55:39,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 90 conjunts are in the unsatisfiable core [2023-11-22 08:55:39,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:55:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2368 backedges. 0 proven. 2134 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-22 08:55:41,140 INFO L327 TraceCheckSpWp]: Computing backward predicates...