./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/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_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 17:19:03,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 17:19:03,548 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-21 17:19:03,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 17:19:03,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 17:19:03,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 17:19:03,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 17:19:03,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 17:19:03,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 17:19:03,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 17:19:03,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 17:19:03,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 17:19:03,617 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 17:19:03,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 17:19:03,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 17:19:03,620 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 17:19:03,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 17:19:03,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 17:19:03,621 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 17:19:03,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 17:19:03,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 17:19:03,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 17:19:03,623 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 17:19:03,623 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 17:19:03,624 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 17:19:03,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 17:19:03,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 17:19:03,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 17:19:03,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 17:19:03,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:19:03,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 17:19:03,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 17:19:03,628 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 17:19:03,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 17:19:03,628 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-21 17:19:03,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 17:19:03,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 17:19:03,629 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-21 17:19:03,629 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 17:19:03,630 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-21 17:19:03,630 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-21 17:19:03,630 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_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2023-11-21 17:19:03,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 17:19:03,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 17:19:03,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 17:19:03,985 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 17:19:03,985 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 17:19:03,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-11-21 17:19:07,037 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 17:19:07,337 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 17:19:07,337 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-11-21 17:19:07,364 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/data/f2a8f4334/c40caa075f744ae99cbcff70cabfe68e/FLAGa41ea6e62 [2023-11-21 17:19:07,381 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/data/f2a8f4334/c40caa075f744ae99cbcff70cabfe68e [2023-11-21 17:19:07,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 17:19:07,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 17:19:07,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 17:19:07,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 17:19:07,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 17:19:07,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:19:07" (1/1) ... [2023-11-21 17:19:07,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7692c5ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:07, skipping insertion in model container [2023-11-21 17:19:07,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:19:07" (1/1) ... [2023-11-21 17:19:07,457 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 17:19:07,920 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30869,30882] [2023-11-21 17:19:07,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:19:07,945 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 17:19:08,019 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30869,30882] [2023-11-21 17:19:08,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:19:08,073 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:19:08,073 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:19:08,080 INFO L206 MainTranslator]: Completed translation [2023-11-21 17:19:08,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08 WrapperNode [2023-11-21 17:19:08,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 17:19:08,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 17:19:08,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 17:19:08,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 17:19:08,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08" (1/1) ... [2023-11-21 17:19:08,111 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08" (1/1) ... [2023-11-21 17:19:08,143 INFO L138 Inliner]: procedures = 172, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 105 [2023-11-21 17:19:08,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 17:19:08,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 17:19:08,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 17:19:08,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 17:19:08,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08" (1/1) ... [2023-11-21 17:19:08,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08" (1/1) ... [2023-11-21 17:19:08,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08" (1/1) ... [2023-11-21 17:19:08,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08" (1/1) ... [2023-11-21 17:19:08,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08" (1/1) ... [2023-11-21 17:19:08,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08" (1/1) ... [2023-11-21 17:19:08,189 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08" (1/1) ... [2023-11-21 17:19:08,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08" (1/1) ... [2023-11-21 17:19:08,194 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 17:19:08,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 17:19:08,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 17:19:08,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 17:19:08,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08" (1/1) ... [2023-11-21 17:19:08,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:19:08,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:08,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 17:19:08,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 17:19:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 17:19:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-21 17:19:08,287 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-21 17:19:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 17:19:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 17:19:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 17:19:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 17:19:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 17:19:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 17:19:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 17:19:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 17:19:08,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 17:19:08,293 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 17:19:08,503 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 17:19:08,505 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 17:19:08,787 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 17:19:09,011 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 17:19:09,012 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 17:19:09,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:09 BoogieIcfgContainer [2023-11-21 17:19:09,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 17:19:09,017 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 17:19:09,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 17:19:09,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 17:19:09,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:19:07" (1/3) ... [2023-11-21 17:19:09,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bf3151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:19:09, skipping insertion in model container [2023-11-21 17:19:09,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:08" (2/3) ... [2023-11-21 17:19:09,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bf3151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:19:09, skipping insertion in model container [2023-11-21 17:19:09,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:09" (3/3) ... [2023-11-21 17:19:09,027 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-11-21 17:19:09,035 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 17:19:09,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 17:19:09,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 17:19:09,046 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 17:19:09,104 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 17:19:09,151 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:19:09,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-21 17:19:09,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:09,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-21 17:19:09,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-21 17:19:09,257 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-21 17:19:09,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2023-11-21 17:19:09,293 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3d7603ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:19:09,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 17:19:09,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:19:09,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:09,467 INFO L85 PathProgramCache]: Analyzing trace with hash 609042331, now seen corresponding path program 1 times [2023-11-21 17:19:09,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:09,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601011820] [2023-11-21 17:19:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:09,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:10,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:10,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601011820] [2023-11-21 17:19:10,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601011820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:19:10,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599024158] [2023-11-21 17:19:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:10,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:10,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:10,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:19:10,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 17:19:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:11,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-21 17:19:11,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:19:11,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 17:19:11,221 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-21 17:19:11,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-11-21 17:19:11,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 17:19:11,341 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 17:19:11,545 INFO L349 Elim1Store]: treesize reduction 70, result has 17.6 percent of original size [2023-11-21 17:19:11,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 25 [2023-11-21 17:19:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:11,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:19:12,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:19:12,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-11-21 17:19:12,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:19:12,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-11-21 17:19:12,260 INFO L349 Elim1Store]: treesize reduction 32, result has 54.9 percent of original size [2023-11-21 17:19:12,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 1015 treesize of output 996 [2023-11-21 17:19:12,314 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 357 treesize of output 341 [2023-11-21 17:19:12,472 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 6 treesize of output 4 [2023-11-21 17:19:12,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:19:12,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 642 treesize of output 624 [2023-11-21 17:19:12,561 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 293 treesize of output 277 [2023-11-21 17:19:12,730 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 21 treesize of output 17 [2023-11-21 17:19:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:12,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599024158] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:19:12,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 17:19:12,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2023-11-21 17:19:12,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736929091] [2023-11-21 17:19:12,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 17:19:12,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-21 17:19:12,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:12,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-21 17:19:12,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=386, Unknown=6, NotChecked=0, Total=462 [2023-11-21 17:19:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:12,945 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:12,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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 17:19:12,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 17:19:16,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 17:19:16,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-21 17:19:16,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:19:16,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:16,507 INFO L85 PathProgramCache]: Analyzing trace with hash -347544293, now seen corresponding path program 2 times [2023-11-21 17:19:16,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:16,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811597591] [2023-11-21 17:19:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:16,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:17,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:17,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811597591] [2023-11-21 17:19:17,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811597591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:19:17,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972574290] [2023-11-21 17:19:17,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 17:19:17,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:17,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:17,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:19:17,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 17:19:17,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 17:19:17,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 17:19:17,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-21 17:19:17,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:19:17,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 17:19:17,266 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-21 17:19:17,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-11-21 17:19:17,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 17:19:17,370 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 17:19:17,571 INFO L349 Elim1Store]: treesize reduction 102, result has 32.5 percent of original size [2023-11-21 17:19:17,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 95 [2023-11-21 17:19:17,696 INFO L349 Elim1Store]: treesize reduction 39, result has 48.7 percent of original size [2023-11-21 17:19:17,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 52 [2023-11-21 17:19:17,755 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-21 17:19:17,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2023-11-21 17:19:17,769 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-21 17:19:17,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2023-11-21 17:19:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:19,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:19:20,009 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_108 (Array Int Int)) (|~#top~0.base| Int) (|thr1Thread1of1ForFork0_push_~#ret~0#1.base| Int)) (not (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_108))) (store .cse1 |~#top~0.base| (store (select .cse1 |~#top~0.base|) |c_~#top~0.offset| (select (select .cse1 |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|)))))) (store .cse0 |thr1Thread1of1ForFork0_push_~#ret~0#1.base| (store (select .cse0 |thr1Thread1of1ForFork0_push_~#ret~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |~#top~0.base|) |c_~#top~0.offset|) 0))) is different from false [2023-11-21 17:19:20,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:19:20,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-11-21 17:19:20,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:19:20,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-11-21 17:19:20,189 INFO L349 Elim1Store]: treesize reduction 32, result has 54.9 percent of original size [2023-11-21 17:19:20,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 1347 treesize of output 1296 [2023-11-21 17:19:20,227 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 357 treesize of output 341 [2023-11-21 17:19:20,345 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 6 treesize of output 4 [2023-11-21 17:19:20,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:19:20,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 642 treesize of output 624 [2023-11-21 17:19:20,406 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 293 treesize of output 277 [2023-11-21 17:19:20,533 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 21 treesize of output 17 [2023-11-21 17:19:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-21 17:19:20,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972574290] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:19:20,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 17:19:20,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-11-21 17:19:20,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431295812] [2023-11-21 17:19:20,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 17:19:20,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-21 17:19:20,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:20,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-21 17:19:20,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=397, Unknown=2, NotChecked=40, Total=506 [2023-11-21 17:19:20,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:20,708 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:20,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 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 17:19:20,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-21 17:19:20,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 17:19:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-21 17:19:22,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 17:19:23,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:23,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:19:23,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:23,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1326166078, now seen corresponding path program 1 times [2023-11-21 17:19:23,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:23,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234040601] [2023-11-21 17:19:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:23,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:23,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:23,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234040601] [2023-11-21 17:19:23,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234040601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:19:23,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347299752] [2023-11-21 17:19:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:23,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:23,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:23,974 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:19:23,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 17:19:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:24,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-21 17:19:24,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:19:24,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 17:19:24,153 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-21 17:19:24,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-21 17:19:24,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 17:19:24,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 17:19:24,453 INFO L349 Elim1Store]: treesize reduction 74, result has 20.4 percent of original size [2023-11-21 17:19:24,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 111 [2023-11-21 17:19:24,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:19:24,519 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-21 17:19:24,520 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 1 case distinctions, treesize of input 52 treesize of output 35 [2023-11-21 17:19:25,014 INFO L349 Elim1Store]: treesize reduction 67, result has 38.5 percent of original size [2023-11-21 17:19:25,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 81 [2023-11-21 17:19:25,055 INFO L349 Elim1Store]: treesize reduction 43, result has 29.5 percent of original size [2023-11-21 17:19:25,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 95 treesize of output 124 [2023-11-21 17:19:25,099 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2023-11-21 17:19:25,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 62 [2023-11-21 17:19:25,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 14 treesize of output 11 [2023-11-21 17:19:25,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 40 [2023-11-21 17:19:25,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 43 treesize of output 38 [2023-11-21 17:19:25,483 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 5 [2023-11-21 17:19:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:25,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:19:26,483 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_thr1Thread1of1ForFork0_push_#t~mem8#1_25| Int) (v_ArrVal_186 Int) (v_DerPreprocessor_16 (Array Int Int)) (|~#top~0.base| Int)) (let ((.cse1 (store |c_#memory_int| |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_16))) (or (< v_ArrVal_186 |v_thr1Thread1of1ForFork0_push_#t~mem8#1_25|) (not (= (select (select (let ((.cse0 (select .cse1 |~#top~0.base|))) (store (store |c_#memory_int| |~#top~0.base| (store .cse0 |c_~#top~0.offset| v_ArrVal_186)) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| (store (select (store .cse1 |~#top~0.base| (store .cse0 |c_~#top~0.offset| |v_thr1Thread1of1ForFork0_push_#t~mem8#1_25|)) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |~#top~0.base|) |c_~#top~0.offset|) 0)) (< 0 (select v_DerPreprocessor_16 |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset|)) (< |v_thr1Thread1of1ForFork0_push_#t~mem8#1_25| (select (select .cse1 |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|))))) is different from false [2023-11-21 17:19:26,551 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int)) (|v_thr1Thread1of1ForFork0_push_#t~mem8#1_25| Int) (v_ArrVal_186 Int) (v_DerPreprocessor_16 (Array Int Int)) (|~#top~0.base| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_180))) (let ((.cse0 (store .cse1 |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_16))) (or (< v_ArrVal_186 |v_thr1Thread1of1ForFork0_push_#t~mem8#1_25|) (< |v_thr1Thread1of1ForFork0_push_#t~mem8#1_25| (select (select .cse0 |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|)) (< 0 (select v_DerPreprocessor_16 |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset|)) (not (= (select (select (let ((.cse2 (select .cse0 |~#top~0.base|))) (store (store .cse1 |~#top~0.base| (store .cse2 |c_~#top~0.offset| v_ArrVal_186)) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| (store (select (store .cse0 |~#top~0.base| (store .cse2 |c_~#top~0.offset| |v_thr1Thread1of1ForFork0_push_#t~mem8#1_25|)) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |~#top~0.base|) |c_~#top~0.offset|) 0)))))) is different from false [2023-11-21 17:19:26,654 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:19:26,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-11-21 17:19:26,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:19:26,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-11-21 17:19:26,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:19:26,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1831 treesize of output 1840 [2023-11-21 17:19:26,805 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 263 treesize of output 261 [2023-11-21 17:19:26,820 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 261 treesize of output 259 [2023-11-21 17:19:26,834 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 266 treesize of output 262 [2023-11-21 17:19:26,931 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 27 treesize of output 25 [2023-11-21 17:19:27,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:19:27,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 105 treesize of output 175 [2023-11-21 17:19:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2023-11-21 17:19:28,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347299752] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:19:28,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 17:19:28,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-11-21 17:19:28,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986895101] [2023-11-21 17:19:28,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 17:19:28,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-21 17:19:28,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:28,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-21 17:19:28,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=678, Unknown=15, NotChecked=110, Total=930 [2023-11-21 17:19:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:28,428 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:28,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.1) internal successors, (63), 30 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 17:19:28,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-21 17:19:28,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-21 17:19:28,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 17:19:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 17:19:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-21 17:19:31,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-21 17:19:31,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:31,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:19:31,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:31,391 INFO L85 PathProgramCache]: Analyzing trace with hash -522588581, now seen corresponding path program 3 times [2023-11-21 17:19:31,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:31,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150406706] [2023-11-21 17:19:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:31,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:31,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:31,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150406706] [2023-11-21 17:19:31,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150406706] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:19:31,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436797344] [2023-11-21 17:19:31,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 17:19:31,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:31,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:31,870 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:19:31,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea1c0e6-f239-4864-b1a9-2f8f96de0c2b/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 17:19:31,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-21 17:19:31,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 17:19:31,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-21 17:19:31,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:19:31,995 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-21 17:19:31,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-11-21 17:19:32,101 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 17:19:32,307 INFO L349 Elim1Store]: treesize reduction 70, result has 17.6 percent of original size [2023-11-21 17:19:32,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 25 [2023-11-21 17:19:32,392 INFO L349 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2023-11-21 17:19:32,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 47 [2023-11-21 17:19:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:32,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:19:32,532 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_242 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_242) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) is different from false [2023-11-21 17:19:32,637 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_~#top~0.base|))) (let ((.cse2 (= |c_thr1Thread1of1ForFork0_push_~oldTop~0#1| (select .cse1 |c_~#top~0.offset|)))) (and (or (forall ((|thr1Thread1of1ForFork0_push_~#ret~0#1.base| Int) (v_ArrVal_242 (Array Int Int))) (not (= (select (select (store (let ((.cse0 (store |c_#memory_int| |c_~#top~0.base| (store .cse1 |c_~#top~0.offset| (select (select |c_#memory_int| |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|))))) (store .cse0 |thr1Thread1of1ForFork0_push_~#ret~0#1.base| (store (select .cse0 |thr1Thread1of1ForFork0_push_~#ret~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_242) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) (not .cse2)) (or (forall ((|thr1Thread1of1ForFork0_push_~#ret~0#1.base| Int) (v_DerPreprocessor_18 (Array Int Int)) (v_ArrVal_242 (Array Int Int))) (not (= (select (select (store (store |c_#memory_int| |thr1Thread1of1ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_242) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) .cse2)))) is different from false [2023-11-21 17:19:32,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:19:32,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-11-21 17:19:32,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 17:19:32,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-11-21 17:19:32,892 INFO L349 Elim1Store]: treesize reduction 27, result has 60.9 percent of original size [2023-11-21 17:19:32,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 105 treesize of output 127 [2023-11-21 17:19:33,035 INFO L349 Elim1Store]: treesize reduction 74, result has 46.0 percent of original size [2023-11-21 17:19:33,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 108 treesize of output 163 [2023-11-21 17:19:33,104 INFO L349 Elim1Store]: treesize reduction 40, result has 38.5 percent of original size [2023-11-21 17:19:33,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 132 treesize of output 129 [2023-11-21 17:19:33,122 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 74 treesize of output 72 [2023-11-21 17:19:33,478 INFO L349 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2023-11-21 17:19:33,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 166 treesize of output 166 [2023-11-21 17:19:33,583 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-21 17:19:33,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 4 [2023-11-21 17:19:33,599 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-21 17:19:33,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 14 [2023-11-21 17:19:33,757 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 170 treesize of output 164 [2023-11-21 17:19:34,506 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-21 17:19:34,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 76 treesize of output 70 [2023-11-21 17:19:34,620 INFO L349 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2023-11-21 17:19:34,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 27 [2023-11-21 17:19:34,686 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-21 17:19:34,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 76 treesize of output 70