./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf --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 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 17:19:45,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 17:19:45,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-11-21 17:19:45,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 17:19:45,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 17:19:45,463 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 17:19:45,464 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 17:19:45,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 17:19:45,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 17:19:45,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 17:19:45,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 17:19:45,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 17:19:45,475 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 17:19:45,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 17:19:45,478 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 17:19:45,478 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 17:19:45,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 17:19:45,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 17:19:45,480 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 17:19:45,480 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 17:19:45,481 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 17:19:45,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 17:19:45,482 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 17:19:45,482 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 17:19:45,483 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 17:19:45,483 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 17:19:45,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 17:19:45,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 17:19:45,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 17:19:45,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 17:19:45,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:19:45,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 17:19:45,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 17:19:45,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 17:19:45,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 17:19:45,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 17:19:45,490 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-21 17:19:45,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-21 17:19:45,490 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-21 17:19:45,491 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-21 17:19:45,491 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_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 [2023-11-21 17:19:45,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 17:19:45,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 17:19:45,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 17:19:45,896 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 17:19:45,896 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 17:19:45,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/../../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2023-11-21 17:19:49,124 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 17:19:49,562 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 17:19:49,563 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2023-11-21 17:19:49,595 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/data/56f514131/12754557b9054054831c7f00ec3ffc75/FLAG08f5b66de [2023-11-21 17:19:49,615 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/data/56f514131/12754557b9054054831c7f00ec3ffc75 [2023-11-21 17:19:49,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 17:19:49,626 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 17:19:49,629 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 17:19:49,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 17:19:49,635 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 17:19:49,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:19:49" (1/1) ... [2023-11-21 17:19:49,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2edd3aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:49, skipping insertion in model container [2023-11-21 17:19:49,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:19:49" (1/1) ... [2023-11-21 17:19:49,720 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 17:19:50,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:19:50,877 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 17:19:51,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:19:51,179 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:19:51,179 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:19:51,188 INFO L206 MainTranslator]: Completed translation [2023-11-21 17:19:51,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51 WrapperNode [2023-11-21 17:19:51,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 17:19:51,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 17:19:51,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 17:19:51,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 17:19:51,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51" (1/1) ... [2023-11-21 17:19:51,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51" (1/1) ... [2023-11-21 17:19:51,335 INFO L138 Inliner]: procedures = 481, calls = 75, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 288 [2023-11-21 17:19:51,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 17:19:51,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 17:19:51,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 17:19:51,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 17:19:51,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51" (1/1) ... [2023-11-21 17:19:51,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51" (1/1) ... [2023-11-21 17:19:51,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51" (1/1) ... [2023-11-21 17:19:51,396 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51" (1/1) ... [2023-11-21 17:19:51,414 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51" (1/1) ... [2023-11-21 17:19:51,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51" (1/1) ... [2023-11-21 17:19:51,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51" (1/1) ... [2023-11-21 17:19:51,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51" (1/1) ... [2023-11-21 17:19:51,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 17:19:51,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 17:19:51,488 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 17:19:51,488 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 17:19:51,489 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51" (1/1) ... [2023-11-21 17:19:51,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:19:51,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:51,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 17:19:51,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 17:19:51,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 17:19:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 17:19:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 17:19:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 17:19:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 17:19:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-21 17:19:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-21 17:19:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 17:19:51,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 17:19:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 17:19:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 17:19:51,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 17:19:51,591 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 17:19:52,034 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 17:19:52,037 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 17:19:52,650 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 17:19:53,004 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 17:19:53,005 INFO L308 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-21 17:19:53,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:53 BoogieIcfgContainer [2023-11-21 17:19:53,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 17:19:53,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 17:19:53,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 17:19:53,013 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 17:19:53,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:19:49" (1/3) ... [2023-11-21 17:19:53,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c237093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:19:53, skipping insertion in model container [2023-11-21 17:19:53,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:51" (2/3) ... [2023-11-21 17:19:53,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c237093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:19:53, skipping insertion in model container [2023-11-21 17:19:53,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:53" (3/3) ... [2023-11-21 17:19:53,016 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2023-11-21 17:19:53,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 17:19:53,040 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2023-11-21 17:19:53,040 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 17:19:53,160 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 17:19:53,213 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:19:53,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-21 17:19:53,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:53,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-21 17:19:53,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-21 17:19:53,297 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-21 17:19:53,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == threadThread1of1ForFork0 ======== [2023-11-21 17:19:53,320 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;@5173cab7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:19:53,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2023-11-21 17:19:53,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-21 17:19:53,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:53,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1997701223, now seen corresponding path program 1 times [2023-11-21 17:19:53,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:53,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219874342] [2023-11-21 17:19:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:53,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:54,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:54,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219874342] [2023-11-21 17:19:54,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219874342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:19:54,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:19:54,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 17:19:54,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719341710] [2023-11-21 17:19:54,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:19:54,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 17:19:54,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:54,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 17:19:54,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 17:19:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:54,692 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:54,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-21 17:19:54,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:54,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:54,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 17:19:54,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-21 17:19:54,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:54,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1028643037, now seen corresponding path program 1 times [2023-11-21 17:19:54,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:54,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847268065] [2023-11-21 17:19:54,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:54,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:55,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:55,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847268065] [2023-11-21 17:19:55,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847268065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:19:55,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:19:55,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 17:19:55,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538696368] [2023-11-21 17:19:55,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:19:55,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 17:19:55,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:55,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 17:19:55,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 17:19:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:55,213 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:55,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2023-11-21 17:19:55,214 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:55,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:55,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:55,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 17:19:55,501 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-21 17:19:55,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:55,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1028643038, now seen corresponding path program 1 times [2023-11-21 17:19:55,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:55,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546901876] [2023-11-21 17:19:55,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:55,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:55,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:55,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546901876] [2023-11-21 17:19:55,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546901876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:19:55,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368029754] [2023-11-21 17:19:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:55,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:55,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:55,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:19:55,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 17:19:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:55,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 17:19:55,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:19:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:55,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:19:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:55,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368029754] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:19:55,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 17:19:55,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-21 17:19:55,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669939693] [2023-11-21 17:19:55,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 17:19:55,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 17:19:55,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:55,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 17:19:55,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-21 17:19:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:56,000 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:56,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2023-11-21 17:19:56,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:56,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:56,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:56,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 17:19:56,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:56,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-21 17:19:56,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:56,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1106399735, now seen corresponding path program 2 times [2023-11-21 17:19:56,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:56,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507265873] [2023-11-21 17:19:56,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:56,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 17:19:57,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:57,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507265873] [2023-11-21 17:19:57,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507265873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:19:57,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:19:57,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 17:19:57,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188576694] [2023-11-21 17:19:57,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:19:57,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 17:19:57,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:57,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 17:19:57,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 17:19:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:57,083 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:57,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-11-21 17:19:57,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:57,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:57,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:57,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:57,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:57,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 17:19:57,480 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr32ASSERT_VIOLATIONMEMORY_LEAK === [threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-21 17:19:57,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:57,481 INFO L85 PathProgramCache]: Analyzing trace with hash -548220124, now seen corresponding path program 1 times [2023-11-21 17:19:57,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:57,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939948341] [2023-11-21 17:19:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:57,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 17:19:57,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:57,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939948341] [2023-11-21 17:19:57,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939948341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:19:57,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:19:57,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 17:19:57,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373567120] [2023-11-21 17:19:57,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:19:57,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 17:19:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:57,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 17:19:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 17:19:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:57,625 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:57,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2023-11-21 17:19:57,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:57,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:57,626 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:57,626 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:57,626 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:57,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 17:19:57,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-21 17:19:57,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:57,837 INFO L85 PathProgramCache]: Analyzing trace with hash -523530402, now seen corresponding path program 1 times [2023-11-21 17:19:57,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:57,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335293645] [2023-11-21 17:19:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:57,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 17:19:58,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:58,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335293645] [2023-11-21 17:19:58,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335293645] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:19:58,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043340779] [2023-11-21 17:19:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:58,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:58,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:58,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:19:58,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 17:19:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:58,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 17:19:58,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:19:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-21 17:19:58,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 17:19:58,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043340779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:19:58,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 17:19:58,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 9 [2023-11-21 17:19:58,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295653778] [2023-11-21 17:19:58,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:19:58,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 17:19:58,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:58,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 17:19:58,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-21 17:19:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:58,771 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:58,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-21 17:19:58,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:58,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:58,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:58,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:58,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:58,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:58,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:58,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 17:19:59,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 17:19:59,160 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-21 17:19:59,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash 950427811, now seen corresponding path program 1 times [2023-11-21 17:19:59,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:59,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853648228] [2023-11-21 17:19:59,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:59,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-21 17:19:59,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:59,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853648228] [2023-11-21 17:19:59,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853648228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:19:59,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:19:59,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 17:19:59,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021061506] [2023-11-21 17:19:59,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:19:59,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 17:19:59,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:59,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 17:19:59,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 17:19:59,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:59,324 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:59,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-21 17:19:59,325 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:59,329 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:59,329 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:59,330 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:59,330 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:59,330 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:59,330 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:19:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:59,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:19:59,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 17:19:59,485 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-21 17:19:59,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:59,486 INFO L85 PathProgramCache]: Analyzing trace with hash 950427812, now seen corresponding path program 1 times [2023-11-21 17:19:59,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:59,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186511784] [2023-11-21 17:19:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:59,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 17:19:59,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186511784] [2023-11-21 17:19:59,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186511784] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:19:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844855261] [2023-11-21 17:19:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:59,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:59,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:59,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:19:59,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 17:20:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:20:00,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-21 17:20:00,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:20:00,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-21 17:20:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 17:20:00,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:20:00,387 INFO L349 Elim1Store]: treesize reduction 4, result has 69.2 percent of original size [2023-11-21 17:20:00,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2023-11-21 17:20:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 17:20:00,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844855261] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:20:00,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 17:20:00,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-21 17:20:00,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833545846] [2023-11-21 17:20:00,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 17:20:00,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 17:20:00,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:20:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 17:20:00,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-21 17:20:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:00,411 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:20:00,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 17:20:00,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:00,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:00,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:00,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:00,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:00,415 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:00,415 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:00,415 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:00,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:20:00,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 17:20:01,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 17:20:01,156 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-21 17:20:01,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:20:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash -45250959, now seen corresponding path program 1 times [2023-11-21 17:20:01,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:20:01,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280575931] [2023-11-21 17:20:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:20:01,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:20:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:20:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 17:20:02,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:20:02,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280575931] [2023-11-21 17:20:02,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280575931] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:20:02,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416026246] [2023-11-21 17:20:02,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:20:02,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:20:02,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:20:02,017 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:20:02,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 17:20:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:20:02,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-21 17:20:02,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:20:02,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:02,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-21 17:20:02,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-21 17:20:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 17:20:02,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:20:02,647 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_157 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_~#threads~0.base| v_ArrVal_157) |c_~#stack~0.base|) (+ |c_~#stack~0.offset| 28)) 2)) is different from false [2023-11-21 17:20:02,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:20:02,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 36 [2023-11-21 17:20:02,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-21 17:20:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 2 not checked. [2023-11-21 17:20:02,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416026246] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:20:02,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 17:20:02,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-11-21 17:20:02,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473617650] [2023-11-21 17:20:02,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 17:20:02,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-21 17:20:02,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:20:02,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-21 17:20:02,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=244, Unknown=6, NotChecked=32, Total=342 [2023-11-21 17:20:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:02,806 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:20:02,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 18 states have internal predecessors, (80), 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) [2023-11-21 17:20:02,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:02,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:02,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:02,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:02,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:02,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:02,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:02,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:20:02,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:20:03,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 17:20:03,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 17:20:03,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:20:03,582 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-21 17:20:03,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:20:03,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1176545572, now seen corresponding path program 1 times [2023-11-21 17:20:03,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:20:03,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858279246] [2023-11-21 17:20:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:20:03,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:20:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:20:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:20:05,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:20:05,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858279246] [2023-11-21 17:20:05,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858279246] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:20:05,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436763450] [2023-11-21 17:20:05,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:20:05,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:20:05,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:20:05,220 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:20:05,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5329f817-3bf4-47bc-869a-04811a87f81f/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 17:20:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:20:05,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-21 17:20:05,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:20:05,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-21 17:20:05,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:05,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-21 17:20:05,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:05,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-21 17:20:05,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:05,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-21 17:20:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:06,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-21 17:20:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:20:06,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:20:08,425 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_atomic_store_~obj#1.base|)) (.cse1 (+ |c_~#stack~0.offset| 24))) (and (forall ((v_ArrVal_188 (Array Int Int)) (|ULTIMATE.start_atomic_store_~v#1| Int)) (<= 0 (+ |c_~#stack~0.offset| 4 (* (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_atomic_store_~obj#1.base| (store .cse0 |c_ULTIMATE.start_atomic_store_~obj#1.offset| |ULTIMATE.start_atomic_store_~v#1|)) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse1) 8)))) (forall ((v_ArrVal_188 (Array Int Int)) (|ULTIMATE.start_atomic_store_~v#1| Int)) (<= (+ 8 |c_~#stack~0.offset| (* (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_atomic_store_~obj#1.base| (store .cse0 |c_ULTIMATE.start_atomic_store_~obj#1.offset| |ULTIMATE.start_atomic_store_~v#1|)) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse1) 8)) (select |c_#length| |c_~#stack~0.base|))))) is different from false [2023-11-21 17:20:10,474 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_~#stack~0.base|)) (.cse1 (+ |c_~#stack~0.offset| 24)) (.cse2 (+ (* |c_ULTIMATE.start_Init_~pushCount#1| 8) |c_~#stack~0.offset|))) (and (forall ((|v_ULTIMATE.start_atomic_store_~obj#1.offset_108| Int)) (or (forall ((v_ArrVal_188 (Array Int Int)) (|ULTIMATE.start_atomic_store_~v#1| Int)) (<= (+ 8 |c_~#stack~0.offset| (* (select (select (store (store |c_#memory_int| |c_~#stack~0.base| (store .cse0 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108| |ULTIMATE.start_atomic_store_~v#1|)) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse1) 8)) (select |c_#length| |c_~#stack~0.base|))) (< .cse2 (+ 4 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108|)))) (forall ((|v_ULTIMATE.start_atomic_store_~obj#1.offset_108| Int)) (or (forall ((v_ArrVal_188 (Array Int Int)) (|ULTIMATE.start_atomic_store_~v#1| Int)) (<= 0 (+ |c_~#stack~0.offset| 4 (* (select (select (store (store |c_#memory_int| |c_~#stack~0.base| (store .cse0 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108| |ULTIMATE.start_atomic_store_~v#1|)) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse1) 8)))) (< .cse2 (+ 4 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108|)))))) is different from false [2023-11-21 17:20:12,573 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_atomic_store_~obj#1.base|)) (.cse2 (+ |c_~#stack~0.offset| 24)) (.cse3 (+ (* |c_ULTIMATE.start_Init_~pushCount#1| 8) |c_~#stack~0.offset|))) (and (forall ((v_ArrVal_185 Int) (|v_ULTIMATE.start_atomic_store_~obj#1.offset_108| Int)) (or (forall ((v_ArrVal_188 (Array Int Int)) (|ULTIMATE.start_atomic_store_~v#1| Int)) (<= (+ 8 |c_~#stack~0.offset| (* 8 (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_atomic_store_~obj#1.base| (store .cse1 |c_ULTIMATE.start_atomic_store_~obj#1.offset| v_ArrVal_185)))) (store .cse0 |c_~#stack~0.base| (store (select .cse0 |c_~#stack~0.base|) |v_ULTIMATE.start_atomic_store_~obj#1.offset_108| |ULTIMATE.start_atomic_store_~v#1|))) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse2))) (select |c_#length| |c_~#stack~0.base|))) (< .cse3 (+ 4 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108|)))) (forall ((v_ArrVal_185 Int) (|v_ULTIMATE.start_atomic_store_~obj#1.offset_108| Int)) (or (forall ((v_ArrVal_188 (Array Int Int)) (|ULTIMATE.start_atomic_store_~v#1| Int)) (<= 0 (+ |c_~#stack~0.offset| 4 (* 8 (select (select (store (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_atomic_store_~obj#1.base| (store .cse1 |c_ULTIMATE.start_atomic_store_~obj#1.offset| v_ArrVal_185)))) (store .cse4 |c_~#stack~0.base| (store (select .cse4 |c_~#stack~0.base|) |v_ULTIMATE.start_atomic_store_~obj#1.offset_108| |ULTIMATE.start_atomic_store_~v#1|))) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse2))))) (< .cse3 (+ 4 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108|)))))) is different from false [2023-11-21 17:20:14,690 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_~#stack~0.base|)) (.cse2 (+ |c_~#stack~0.offset| 24)) (.cse3 (+ (* |c_ULTIMATE.start_Init_~pushCount#1| 8) |c_~#stack~0.offset|)) (.cse0 (+ |c_~#stack~0.offset| 4 (* |c_ULTIMATE.start_Init_~i~0#1| 8)))) (and (forall ((|v_ULTIMATE.start_atomic_store_~obj#1.offset_110| Int)) (or (< .cse0 |v_ULTIMATE.start_atomic_store_~obj#1.offset_110|) (forall ((v_ArrVal_185 Int) (|v_ULTIMATE.start_atomic_store_~obj#1.offset_108| Int)) (or (forall ((v_ArrVal_188 (Array Int Int)) (|ULTIMATE.start_atomic_store_~v#1| Int)) (<= 0 (+ (* (select (select (store (store |c_#memory_int| |c_~#stack~0.base| (store (store .cse1 |v_ULTIMATE.start_atomic_store_~obj#1.offset_110| v_ArrVal_185) |v_ULTIMATE.start_atomic_store_~obj#1.offset_108| |ULTIMATE.start_atomic_store_~v#1|)) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse2) 8) |c_~#stack~0.offset| 4))) (< .cse3 (+ 4 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108|)))))) (forall ((|v_ULTIMATE.start_atomic_store_~obj#1.offset_110| Int)) (or (forall ((v_ArrVal_185 Int) (|v_ULTIMATE.start_atomic_store_~obj#1.offset_108| Int)) (or (forall ((v_ArrVal_188 (Array Int Int)) (|ULTIMATE.start_atomic_store_~v#1| Int)) (<= (+ (* (select (select (store (store |c_#memory_int| |c_~#stack~0.base| (store (store .cse1 |v_ULTIMATE.start_atomic_store_~obj#1.offset_110| v_ArrVal_185) |v_ULTIMATE.start_atomic_store_~obj#1.offset_108| |ULTIMATE.start_atomic_store_~v#1|)) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse2) 8) 8 |c_~#stack~0.offset|) (select |c_#length| |c_~#stack~0.base|))) (< .cse3 (+ 4 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108|)))) (< .cse0 |v_ULTIMATE.start_atomic_store_~obj#1.offset_110|))))) is different from false [2023-11-21 17:20:14,788 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 12 |c_~#stack~0.offset| (* |c_ULTIMATE.start_Init_~i~0#1| 8))) (.cse0 (select |c_#memory_int| |c_~#stack~0.base|)) (.cse1 (+ |c_~#stack~0.offset| 24)) (.cse3 (+ (* |c_ULTIMATE.start_Init_~pushCount#1| 8) |c_~#stack~0.offset|))) (and (forall ((|v_ULTIMATE.start_atomic_store_~obj#1.offset_110| Int) (v_ArrVal_185 Int) (v_ArrVal_188 (Array Int Int)) (|v_ULTIMATE.start_atomic_store_~obj#1.offset_108| Int) (|ULTIMATE.start_atomic_store_~v#1| Int)) (or (< 0 (+ (* (select (select (store (store |c_#memory_int| |c_~#stack~0.base| (store (store .cse0 |v_ULTIMATE.start_atomic_store_~obj#1.offset_110| v_ArrVal_185) |v_ULTIMATE.start_atomic_store_~obj#1.offset_108| |ULTIMATE.start_atomic_store_~v#1|)) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse1) 8) 5 |c_~#stack~0.offset|)) (< .cse2 |v_ULTIMATE.start_atomic_store_~obj#1.offset_110|) (< .cse3 (+ 4 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108|)))) (forall ((|v_ULTIMATE.start_atomic_store_~obj#1.offset_110| Int) (v_ArrVal_185 Int) (v_ArrVal_188 (Array Int Int)) (|v_ULTIMATE.start_atomic_store_~obj#1.offset_108| Int) (|ULTIMATE.start_atomic_store_~v#1| Int)) (or (< .cse2 |v_ULTIMATE.start_atomic_store_~obj#1.offset_110|) (< (+ (* (select (select (store (store |c_#memory_int| |c_~#stack~0.base| (store (store .cse0 |v_ULTIMATE.start_atomic_store_~obj#1.offset_110| v_ArrVal_185) |v_ULTIMATE.start_atomic_store_~obj#1.offset_108| |ULTIMATE.start_atomic_store_~v#1|)) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse1) 8) 7 |c_~#stack~0.offset|) (select |c_#length| |c_~#stack~0.base|)) (< .cse3 (+ 4 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108|)))))) is different from false [2023-11-21 17:20:14,855 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_atomic_store_~obj#1.base|)) (.cse2 (+ |c_~#stack~0.offset| 24)) (.cse3 (+ 12 |c_~#stack~0.offset| (* |c_ULTIMATE.start_Init_~i~0#1| 8))) (.cse4 (+ (* |c_ULTIMATE.start_Init_~pushCount#1| 8) |c_~#stack~0.offset|))) (and (forall ((|v_ULTIMATE.start_atomic_store_~obj#1.offset_110| Int) (v_ArrVal_185 Int) (v_ArrVal_183 Int) (v_ArrVal_188 (Array Int Int)) (|v_ULTIMATE.start_atomic_store_~obj#1.offset_108| Int) (|ULTIMATE.start_atomic_store_~v#1| Int)) (or (< 0 (+ (* (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_atomic_store_~obj#1.base| (store .cse1 |c_ULTIMATE.start_atomic_store_~obj#1.offset| v_ArrVal_183)))) (store .cse0 |c_~#stack~0.base| (store (store (select .cse0 |c_~#stack~0.base|) |v_ULTIMATE.start_atomic_store_~obj#1.offset_110| v_ArrVal_185) |v_ULTIMATE.start_atomic_store_~obj#1.offset_108| |ULTIMATE.start_atomic_store_~v#1|))) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse2) 8) 5 |c_~#stack~0.offset|)) (< .cse3 |v_ULTIMATE.start_atomic_store_~obj#1.offset_110|) (< .cse4 (+ 4 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108|)))) (forall ((|v_ULTIMATE.start_atomic_store_~obj#1.offset_110| Int) (v_ArrVal_185 Int) (v_ArrVal_183 Int) (v_ArrVal_188 (Array Int Int)) (|v_ULTIMATE.start_atomic_store_~obj#1.offset_108| Int) (|ULTIMATE.start_atomic_store_~v#1| Int)) (or (< (+ 7 (* (select (select (store (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_atomic_store_~obj#1.base| (store .cse1 |c_ULTIMATE.start_atomic_store_~obj#1.offset| v_ArrVal_183)))) (store .cse5 |c_~#stack~0.base| (store (store (select .cse5 |c_~#stack~0.base|) |v_ULTIMATE.start_atomic_store_~obj#1.offset_110| v_ArrVal_185) |v_ULTIMATE.start_atomic_store_~obj#1.offset_108| |ULTIMATE.start_atomic_store_~v#1|))) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse2) 8) |c_~#stack~0.offset|) (select |c_#length| |c_~#stack~0.base|)) (< .cse3 |v_ULTIMATE.start_atomic_store_~obj#1.offset_110|) (< .cse4 (+ 4 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108|)))))) is different from false [2023-11-21 17:20:45,500 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 12 |c_~#stack~0.offset|)) (.cse1 (select |c_#memory_int| |c_~#stack~0.base|)) (.cse2 (+ |c_~#stack~0.offset| 24)) (.cse3 (+ |c_~#stack~0.offset| 4)) (.cse4 (+ (* |c_ULTIMATE.start_Init_~pushCount#1| 8) |c_~#stack~0.offset|))) (and (forall ((|v_ULTIMATE.start_atomic_store_~obj#1.offset_112| Int) (|v_ULTIMATE.start_atomic_store_~obj#1.offset_110| Int) (v_ArrVal_185 Int) (v_ArrVal_183 Int) (v_ArrVal_188 (Array Int Int)) (|v_ULTIMATE.start_atomic_store_~obj#1.offset_108| Int) (|ULTIMATE.start_atomic_store_~v#1| Int)) (or (< .cse0 |v_ULTIMATE.start_atomic_store_~obj#1.offset_110|) (< 0 (+ 5 (* 8 (select (select (store (store |c_#memory_int| |c_~#stack~0.base| (store (store (store .cse1 |v_ULTIMATE.start_atomic_store_~obj#1.offset_112| v_ArrVal_183) |v_ULTIMATE.start_atomic_store_~obj#1.offset_110| v_ArrVal_185) |v_ULTIMATE.start_atomic_store_~obj#1.offset_108| |ULTIMATE.start_atomic_store_~v#1|)) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse2)) |c_~#stack~0.offset|)) (< .cse3 |v_ULTIMATE.start_atomic_store_~obj#1.offset_112|) (< .cse4 (+ 4 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108|)))) (forall ((|v_ULTIMATE.start_atomic_store_~obj#1.offset_112| Int) (|v_ULTIMATE.start_atomic_store_~obj#1.offset_110| Int) (v_ArrVal_185 Int) (v_ArrVal_183 Int) (v_ArrVal_188 (Array Int Int)) (|v_ULTIMATE.start_atomic_store_~obj#1.offset_108| Int) (|ULTIMATE.start_atomic_store_~v#1| Int)) (or (< .cse0 |v_ULTIMATE.start_atomic_store_~obj#1.offset_110|) (< (+ 7 (* 8 (select (select (store (store |c_#memory_int| |c_~#stack~0.base| (store (store (store .cse1 |v_ULTIMATE.start_atomic_store_~obj#1.offset_112| v_ArrVal_183) |v_ULTIMATE.start_atomic_store_~obj#1.offset_110| v_ArrVal_185) |v_ULTIMATE.start_atomic_store_~obj#1.offset_108| |ULTIMATE.start_atomic_store_~v#1|)) |c_~#threads~0.base| v_ArrVal_188) |c_~#stack~0.base|) .cse2)) |c_~#stack~0.offset|) (select |c_#length| |c_~#stack~0.base|)) (< .cse3 |v_ULTIMATE.start_atomic_store_~obj#1.offset_112|) (< .cse4 (+ 4 |v_ULTIMATE.start_atomic_store_~obj#1.offset_108|)))))) is different from false [2023-11-21 17:20:45,666 INFO L349 Elim1Store]: treesize reduction 112, result has 40.1 percent of original size [2023-11-21 17:20:45,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 92 [2023-11-21 17:20:45,681 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 17:20:45,683 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 17:20:45,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:20:45,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 127 [2023-11-21 17:20:45,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-11-21 17:20:45,912 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 17:20:45,913 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 17:20:45,915 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 17:20:45,987 INFO L349 Elim1Store]: treesize reduction 40, result has 54.0 percent of original size [2023-11-21 17:20:45,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 66 [2023-11-21 17:20:46,001 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 17:20:46,006 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 17:20:46,007 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 17:20:46,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:20:46,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 45 [2023-11-21 17:20:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-11-21 17:20:48,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436763450] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:20:48,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 17:20:48,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 14] total 39 [2023-11-21 17:20:48,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881943938] [2023-11-21 17:20:48,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 17:20:48,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-21 17:20:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:20:48,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-21 17:20:48,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=910, Unknown=38, NotChecked=490, Total=1640 [2023-11-21 17:20:48,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:48,230 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:20:48,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.875) internal successors, (75), 40 states have internal predecessors, (75), 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) [2023-11-21 17:20:48,230 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:48,230 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:48,230 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:48,231 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:48,231 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:48,231 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:48,231 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:48,234 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:20:48,234 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-21 17:20:48,239 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.