./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_35-traces-ex-2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_35-traces-ex-2_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d0c43dd41f99fbfade8285f6054d50d854da6853e7f72e8b1866aad54c9c5c4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:03:58,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:03:58,794 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:03:58,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:03:58,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:03:58,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:03:58,835 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:03:58,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:03:58,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:03:58,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:03:58,838 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:03:58,839 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:03:58,840 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:03:58,841 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:03:58,841 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:03:58,842 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:03:58,843 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:03:58,843 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:03:58,844 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:03:58,844 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:03:58,845 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:03:58,846 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:03:58,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:03:58,847 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:03:58,848 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:03:58,848 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:03:58,849 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:03:58,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:03:58,871 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:03:58,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:03:58,873 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:03:58,874 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:03:58,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:03:58,874 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:03:58,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:03:58,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:03:58,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:03:58,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:03:58,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:03:58,876 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:03:58,876 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:03:58,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:03:58,877 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:03:58,877 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:03:58,878 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:03:58,878 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d0c43dd41f99fbfade8285f6054d50d854da6853e7f72e8b1866aad54c9c5c4 [2023-11-19 05:03:59,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:03:59,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:03:59,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:03:59,237 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:03:59,238 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:03:59,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/goblint-regression/13-privatized_35-traces-ex-2_true.i [2023-11-19 05:04:02,430 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:04:02,801 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:04:02,805 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/sv-benchmarks/c/goblint-regression/13-privatized_35-traces-ex-2_true.i [2023-11-19 05:04:02,832 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/data/b8b4e69a0/50f51b5d2449413581a9e7fcab8bfebd/FLAGc4c102b2b [2023-11-19 05:04:02,850 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/data/b8b4e69a0/50f51b5d2449413581a9e7fcab8bfebd [2023-11-19 05:04:02,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:04:02,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:04:02,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:02,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:04:02,865 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:04:02,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:02" (1/1) ... [2023-11-19 05:04:02,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c99cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:02, skipping insertion in model container [2023-11-19 05:04:02,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:02" (1/1) ... [2023-11-19 05:04:02,937 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:04:03,202 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_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/sv-benchmarks/c/goblint-regression/13-privatized_35-traces-ex-2_true.i[1088,1101] [2023-11-19 05:04:03,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:03,437 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:04:03,453 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_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/sv-benchmarks/c/goblint-regression/13-privatized_35-traces-ex-2_true.i[1088,1101] [2023-11-19 05:04:03,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:03,534 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:04:03,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03 WrapperNode [2023-11-19 05:04:03,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:03,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:03,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:04:03,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:04:03,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03" (1/1) ... [2023-11-19 05:04:03,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03" (1/1) ... [2023-11-19 05:04:03,616 INFO L138 Inliner]: procedures = 162, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-19 05:04:03,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:03,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:04:03,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:04:03,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:04:03,628 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03" (1/1) ... [2023-11-19 05:04:03,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03" (1/1) ... [2023-11-19 05:04:03,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03" (1/1) ... [2023-11-19 05:04:03,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03" (1/1) ... [2023-11-19 05:04:03,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03" (1/1) ... [2023-11-19 05:04:03,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03" (1/1) ... [2023-11-19 05:04:03,657 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03" (1/1) ... [2023-11-19 05:04:03,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03" (1/1) ... [2023-11-19 05:04:03,663 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:04:03,664 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:04:03,664 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:04:03,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:04:03,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03" (1/1) ... [2023-11-19 05:04:03,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:03,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:03,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:04:03,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:04:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:04:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 05:04:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:04:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:04:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 05:04:03,764 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 05:04:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:04:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:04:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:04:03,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:04:03,771 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:04:03,931 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:04:03,934 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:04:04,178 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:04:04,188 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:04:04,188 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:04:04,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:04 BoogieIcfgContainer [2023-11-19 05:04:04,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:04:04,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:04:04,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:04:04,214 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:04:04,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:02" (1/3) ... [2023-11-19 05:04:04,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1da7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:04, skipping insertion in model container [2023-11-19 05:04:04,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:03" (2/3) ... [2023-11-19 05:04:04,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1da7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:04, skipping insertion in model container [2023-11-19 05:04:04,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:04" (3/3) ... [2023-11-19 05:04:04,218 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_35-traces-ex-2_true.i [2023-11-19 05:04:04,231 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:04:04,243 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:04:04,244 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:04:04,244 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:04:04,314 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:04:04,349 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:04:04,361 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 67 transitions, 138 flow [2023-11-19 05:04:04,365 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 67 transitions, 138 flow [2023-11-19 05:04:04,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 67 transitions, 138 flow [2023-11-19 05:04:04,421 INFO L124 PetriNetUnfolderBase]: 1/66 cut-off events. [2023-11-19 05:04:04,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 05:04:04,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 66 events. 1/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-19 05:04:04,436 INFO L119 LiptonReduction]: Number of co-enabled transitions 672 [2023-11-19 05:04:08,314 INFO L134 LiptonReduction]: Checked pairs total: 2116 [2023-11-19 05:04:08,314 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-11-19 05:04:08,324 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 18 transitions, 40 flow [2023-11-19 05:04:08,340 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 38 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 37 states have internal predecessors, (61), 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) [2023-11-19 05:04:08,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:04:08,372 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=FINITE_AUTOMATA, 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;@67cf5e2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:04:08,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:04:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 37 states have internal predecessors, (61), 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) [2023-11-19 05:04:08,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:04:08,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:08,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:04:08,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 05:04:08,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:08,389 INFO L85 PathProgramCache]: Analyzing trace with hash 232892262, now seen corresponding path program 1 times [2023-11-19 05:04:08,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:08,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590001191] [2023-11-19 05:04:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:08,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:08,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:08,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590001191] [2023-11-19 05:04:08,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590001191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:08,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:08,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:04:08,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581866521] [2023-11-19 05:04:08,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:08,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:08,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:08,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:08,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:08,897 INFO L87 Difference]: Start difference. First operand has 38 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 37 states have internal predecessors, (61), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:04:08,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:08,948 INFO L93 Difference]: Finished difference Result 35 states and 52 transitions. [2023-11-19 05:04:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:08,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2023-11-19 05:04:08,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:08,959 INFO L225 Difference]: With dead ends: 35 [2023-11-19 05:04:08,959 INFO L226 Difference]: Without dead ends: 26 [2023-11-19 05:04:08,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:08,966 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:08,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:08,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-19 05:04:09,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-19 05:04:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 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) [2023-11-19 05:04:09,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2023-11-19 05:04:09,010 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 5 [2023-11-19 05:04:09,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:09,012 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2023-11-19 05:04:09,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:04:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2023-11-19 05:04:09,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:04:09,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:09,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:09,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:04:09,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 05:04:09,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:09,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1717535539, now seen corresponding path program 1 times [2023-11-19 05:04:09,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:09,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361141527] [2023-11-19 05:04:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:09,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:09,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:09,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361141527] [2023-11-19 05:04:09,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361141527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:09,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:09,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:04:09,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691694044] [2023-11-19 05:04:09,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:09,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:09,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:09,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:09,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:09,211 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-19 05:04:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:09,251 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2023-11-19 05:04:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:09,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2023-11-19 05:04:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:09,253 INFO L225 Difference]: With dead ends: 22 [2023-11-19 05:04:09,253 INFO L226 Difference]: Without dead ends: 21 [2023-11-19 05:04:09,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:09,255 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:09,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:09,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-19 05:04:09,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-19 05:04:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 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) [2023-11-19 05:04:09,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-11-19 05:04:09,262 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 8 [2023-11-19 05:04:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:09,262 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-19 05:04:09,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-19 05:04:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-11-19 05:04:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:04:09,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:09,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:09,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:04:09,264 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 05:04:09,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:09,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1719336572, now seen corresponding path program 1 times [2023-11-19 05:04:09,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:09,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44970322] [2023-11-19 05:04:09,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:09,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:09,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:09,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44970322] [2023-11-19 05:04:09,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44970322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:09,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:09,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:04:09,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169229453] [2023-11-19 05:04:09,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:09,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:04:09,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:09,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:04:09,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:04:09,484 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2023-11-19 05:04:09,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:09,531 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2023-11-19 05:04:09,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:04:09,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) Word has length 9 [2023-11-19 05:04:09,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:09,533 INFO L225 Difference]: With dead ends: 13 [2023-11-19 05:04:09,534 INFO L226 Difference]: Without dead ends: 10 [2023-11-19 05:04:09,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:04:09,539 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:09,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:09,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-19 05:04:09,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-19 05:04:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 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) [2023-11-19 05:04:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2023-11-19 05:04:09,548 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2023-11-19 05:04:09,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:09,549 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2023-11-19 05:04:09,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2023-11-19 05:04:09,549 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2023-11-19 05:04:09,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:04:09,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:09,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:09,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:04:09,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 05:04:09,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:09,552 INFO L85 PathProgramCache]: Analyzing trace with hash 538106768, now seen corresponding path program 2 times [2023-11-19 05:04:09,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:09,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874710997] [2023-11-19 05:04:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:09,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:09,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:09,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874710997] [2023-11-19 05:04:09,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874710997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:09,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:09,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:04:09,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191955986] [2023-11-19 05:04:09,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:09,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:04:09,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:09,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:04:09,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:04:09,883 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2023-11-19 05:04:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:09,940 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2023-11-19 05:04:09,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:04:09,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) Word has length 9 [2023-11-19 05:04:09,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:09,941 INFO L225 Difference]: With dead ends: 8 [2023-11-19 05:04:09,942 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:04:09,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:04:09,945 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:09,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:09,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:04:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:04:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-11-19 05:04:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:04:09,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2023-11-19 05:04:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:09,950 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:04:09,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2023-11-19 05:04:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:04:09,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:04:09,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-19 05:04:09,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-11-19 05:04:09,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:04:09,958 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-19 05:04:09,962 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 05:04:09,962 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:04:09,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:04:09 BasicIcfg [2023-11-19 05:04:09,967 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:04:09,968 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:04:09,968 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:04:09,969 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:04:09,969 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:04" (3/4) ... [2023-11-19 05:04:09,971 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:04:09,977 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-19 05:04:09,984 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-19 05:04:09,985 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 05:04:09,985 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:04:09,985 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:04:10,088 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:04:10,089 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:04:10,089 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:04:10,090 INFO L158 Benchmark]: Toolchain (without parser) took 7235.23ms. Allocated memory was 167.8MB in the beginning and 224.4MB in the end (delta: 56.6MB). Free memory was 119.0MB in the beginning and 120.6MB in the end (delta: -1.6MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. [2023-11-19 05:04:10,090 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 167.8MB. Free memory is still 136.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:04:10,090 INFO L158 Benchmark]: CACSL2BoogieTranslator took 679.43ms. Allocated memory is still 167.8MB. Free memory was 119.0MB in the beginning and 99.8MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:04:10,091 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.21ms. Allocated memory is still 167.8MB. Free memory was 99.8MB in the beginning and 97.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:04:10,091 INFO L158 Benchmark]: Boogie Preprocessor took 46.18ms. Allocated memory is still 167.8MB. Free memory was 97.7MB in the beginning and 96.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:04:10,092 INFO L158 Benchmark]: RCFGBuilder took 529.22ms. Allocated memory is still 167.8MB. Free memory was 96.5MB in the beginning and 83.3MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:04:10,092 INFO L158 Benchmark]: TraceAbstraction took 5757.73ms. Allocated memory was 167.8MB in the beginning and 224.4MB in the end (delta: 56.6MB). Free memory was 83.0MB in the beginning and 125.8MB in the end (delta: -42.8MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2023-11-19 05:04:10,093 INFO L158 Benchmark]: Witness Printer took 120.97ms. Allocated memory is still 224.4MB. Free memory was 125.8MB in the beginning and 120.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:04:10,096 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 167.8MB. Free memory is still 136.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 679.43ms. Allocated memory is still 167.8MB. Free memory was 119.0MB in the beginning and 99.8MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.21ms. Allocated memory is still 167.8MB. Free memory was 99.8MB in the beginning and 97.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.18ms. Allocated memory is still 167.8MB. Free memory was 97.7MB in the beginning and 96.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 529.22ms. Allocated memory is still 167.8MB. Free memory was 96.5MB in the beginning and 83.3MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5757.73ms. Allocated memory was 167.8MB in the beginning and 224.4MB in the end (delta: 56.6MB). Free memory was 83.0MB in the beginning and 125.8MB in the end (delta: -42.8MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Witness Printer took 120.97ms. Allocated memory is still 224.4MB. Free memory was 125.8MB in the beginning and 120.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 70 PlacesBefore, 21 PlacesAfterwards, 67 TransitionsBefore, 18 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 26 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 62 TotalNumberOfCompositions, 2116 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1036, independent: 869, independent conditional: 0, independent unconditional: 869, dependent: 167, dependent conditional: 0, dependent unconditional: 167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 540, independent: 498, independent conditional: 0, independent unconditional: 498, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 540, independent: 448, independent conditional: 0, independent unconditional: 448, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 92, independent: 50, independent conditional: 0, independent unconditional: 50, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 310, independent: 120, independent conditional: 0, independent unconditional: 120, dependent: 190, dependent conditional: 0, dependent unconditional: 190, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1036, independent: 371, independent conditional: 0, independent unconditional: 371, dependent: 125, dependent conditional: 0, dependent unconditional: 125, unknown: 540, unknown conditional: 0, unknown unconditional: 540] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 83 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 8 mSDtfsCounter, 79 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 138 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 05:04:10,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26a2e5a-3969-45aa-bfb0-c950b0afc54d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE