./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 109ee6fb23cd6e30d14aec37d73eede06aedf81ad0f99da544662d8756597166 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:18:07,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:18:07,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:18:07,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:18:07,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:18:07,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:18:07,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:18:07,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:18:07,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:18:07,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:18:07,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:18:07,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:18:07,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:18:07,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:18:07,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:18:07,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:18:07,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:18:07,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:18:07,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:18:07,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:18:07,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:18:07,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:18:07,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:18:07,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:18:07,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:18:07,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:18:07,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:18:07,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:18:07,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:18:07,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:18:07,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:18:07,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:18:07,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:18:07,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:18:07,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:18:07,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:18:07,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:18:07,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:18:07,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:18:07,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:18:07,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:18:07,885 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 17:18:07,933 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:18:07,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:18:07,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:18:07,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:18:07,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:18:07,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:18:07,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:18:07,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:18:07,937 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:18:07,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:18:07,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:18:07,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:18:07,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:18:07,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:18:07,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:18:07,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:18:07,939 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:18:07,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:18:07,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:18:07,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:18:07,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:18:07,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:18:07,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:18:07,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:18:07,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:18:07,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:18:07,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:18:07,942 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:18:07,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:18:07,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:18:07,943 INFO L138 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_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109ee6fb23cd6e30d14aec37d73eede06aedf81ad0f99da544662d8756597166 [2022-11-21 17:18:08,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:18:08,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:18:08,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:18:08,290 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:18:08,290 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:18:08,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c [2022-11-21 17:18:11,496 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:18:11,927 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:18:11,927 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c [2022-11-21 17:18:11,948 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/data/d3d6f15f9/c874965279394c53bce55704fb7e4449/FLAGac3f8a225 [2022-11-21 17:18:11,969 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/data/d3d6f15f9/c874965279394c53bce55704fb7e4449 [2022-11-21 17:18:11,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:18:11,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:18:11,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:18:11,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:18:11,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:18:11,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:18:11" (1/1) ... [2022-11-21 17:18:11,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11877b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:11, skipping insertion in model container [2022-11-21 17:18:11,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:18:11" (1/1) ... [2022-11-21 17:18:11,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:18:12,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:18:12,246 WARN L237 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_54f97ce7-c092-49f8-b355-ad0a38da64d2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c[1107,1120] [2022-11-21 17:18:12,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:18:12,499 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:18:12,509 WARN L237 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_54f97ce7-c092-49f8-b355-ad0a38da64d2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c[1107,1120] [2022-11-21 17:18:12,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:18:12,728 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:18:12,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12 WrapperNode [2022-11-21 17:18:12,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:18:12,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:18:12,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:18:12,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:18:12,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12" (1/1) ... [2022-11-21 17:18:12,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12" (1/1) ... [2022-11-21 17:18:12,837 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 871 [2022-11-21 17:18:12,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:18:12,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:18:12,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:18:12,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:18:12,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12" (1/1) ... [2022-11-21 17:18:12,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12" (1/1) ... [2022-11-21 17:18:12,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12" (1/1) ... [2022-11-21 17:18:12,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12" (1/1) ... [2022-11-21 17:18:12,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12" (1/1) ... [2022-11-21 17:18:12,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12" (1/1) ... [2022-11-21 17:18:12,946 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12" (1/1) ... [2022-11-21 17:18:12,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12" (1/1) ... [2022-11-21 17:18:12,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:18:12,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:18:12,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:18:12,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:18:12,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12" (1/1) ... [2022-11-21 17:18:12,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:18:12,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:18:13,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:18:13,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:18:13,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:18:13,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:18:13,451 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:18:13,453 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:18:19,616 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:18:19,623 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:18:19,623 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:18:19,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:18:19 BoogieIcfgContainer [2022-11-21 17:18:19,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:18:19,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:18:19,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:18:19,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:18:19,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:18:11" (1/3) ... [2022-11-21 17:18:19,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2463d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:18:19, skipping insertion in model container [2022-11-21 17:18:19,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:12" (2/3) ... [2022-11-21 17:18:19,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2463d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:18:19, skipping insertion in model container [2022-11-21 17:18:19,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:18:19" (3/3) ... [2022-11-21 17:18:19,636 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.toy_lock_4.c [2022-11-21 17:18:19,658 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:18:19,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:18:19,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:18:19,719 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7cf5af3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:18:19,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:18:19,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-11-21 17:18:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:18:19,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:18:19,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:18:19,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:18:19,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:19,739 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-21 17:18:19,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:19,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335962534] [2022-11-21 17:18:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:19,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:18:20,629 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:18:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:18:21,343 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:18:21,345 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:18:21,347 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 17:18:21,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:18:21,356 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-21 17:18:21,362 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:18:21,407 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-21 17:18:21,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:18:21 BoogieIcfgContainer [2022-11-21 17:18:21,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:18:21,433 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:18:21,433 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:18:21,434 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:18:21,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:18:19" (3/4) ... [2022-11-21 17:18:21,439 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 17:18:21,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:18:21,442 INFO L158 Benchmark]: Toolchain (without parser) took 9467.74ms. Allocated memory was 161.5MB in the beginning and 312.5MB in the end (delta: 151.0MB). Free memory was 127.3MB in the beginning and 265.8MB in the end (delta: -138.4MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,443 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 161.5MB. Free memory is still 105.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:18:21,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 755.23ms. Allocated memory is still 161.5MB. Free memory was 127.3MB in the beginning and 96.0MB in the end (delta: 31.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,445 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.57ms. Allocated memory is still 161.5MB. Free memory was 96.0MB in the beginning and 87.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,446 INFO L158 Benchmark]: Boogie Preprocessor took 131.22ms. Allocated memory is still 161.5MB. Free memory was 87.7MB in the beginning and 83.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,453 INFO L158 Benchmark]: RCFGBuilder took 6655.37ms. Allocated memory was 161.5MB in the beginning and 312.5MB in the end (delta: 151.0MB). Free memory was 83.5MB in the beginning and 216.8MB in the end (delta: -133.3MB). Peak memory consumption was 155.3MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,456 INFO L158 Benchmark]: TraceAbstraction took 1802.21ms. Allocated memory is still 312.5MB. Free memory was 216.8MB in the beginning and 265.8MB in the end (delta: -49.0MB). Peak memory consumption was 130.3MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,456 INFO L158 Benchmark]: Witness Printer took 7.07ms. Allocated memory is still 312.5MB. Free memory was 265.8MB in the beginning and 265.8MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 161.5MB. Free memory is still 105.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 755.23ms. Allocated memory is still 161.5MB. Free memory was 127.3MB in the beginning and 96.0MB in the end (delta: 31.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.57ms. Allocated memory is still 161.5MB. Free memory was 96.0MB in the beginning and 87.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 131.22ms. Allocated memory is still 161.5MB. Free memory was 87.7MB in the beginning and 83.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 6655.37ms. Allocated memory was 161.5MB in the beginning and 312.5MB in the end (delta: 151.0MB). Free memory was 83.5MB in the beginning and 216.8MB in the end (delta: -133.3MB). Peak memory consumption was 155.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1802.21ms. Allocated memory is still 312.5MB. Free memory was 216.8MB in the beginning and 265.8MB in the end (delta: -49.0MB). Peak memory consumption was 130.3MB. Max. memory is 16.1GB. * Witness Printer took 7.07ms. Allocated memory is still 312.5MB. Free memory was 265.8MB in the beginning and 265.8MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 187, overapproximation of bitwiseOr at line 125, overapproximation of bitwiseAnd at line 103. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 8); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (8 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 2); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (2 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 1); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (1 - 1); [L34] const SORT_1 var_11 = 0; [L35] const SORT_5 var_45 = 1; [L36] const SORT_1 var_49 = 1; [L37] const SORT_5 var_60 = 0; [L38] const SORT_3 var_81 = 0; [L39] const SORT_3 var_90 = 1; [L40] const SORT_3 var_99 = 2; [L41] const SORT_3 var_108 = 3; [L43] SORT_1 input_2; [L44] SORT_3 input_4; [L45] SORT_5 input_6; [L46] SORT_1 input_7; [L47] SORT_3 input_8; [L48] SORT_3 input_9; [L49] SORT_5 input_10; [L51] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L52] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L53] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L54] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L55] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L56] SORT_1 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L57] SORT_1 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L58] SORT_1 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L59] SORT_5 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L60] SORT_5 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L61] SORT_5 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L62] SORT_5 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L63] SORT_1 state_68 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L64] SORT_1 state_70 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L65] SORT_1 state_72 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L66] SORT_1 state_74 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L68] SORT_1 init_13_arg_1 = var_11; [L69] state_12 = init_13_arg_1 [L70] SORT_1 init_16_arg_1 = var_11; [L71] state_15 = init_16_arg_1 [L72] SORT_1 init_21_arg_1 = var_11; [L73] state_20 = init_21_arg_1 [L74] SORT_1 init_27_arg_1 = var_11; [L75] state_26 = init_27_arg_1 [L76] SORT_1 init_51_arg_1 = var_49; [L77] state_50 = init_51_arg_1 [L78] SORT_1 init_53_arg_1 = var_11; [L79] state_52 = init_53_arg_1 [L80] SORT_1 init_55_arg_1 = var_11; [L81] state_54 = init_55_arg_1 [L82] SORT_1 init_57_arg_1 = var_11; [L83] state_56 = init_57_arg_1 [L84] SORT_5 init_59_arg_1 = var_45; [L85] state_58 = init_59_arg_1 [L86] SORT_5 init_62_arg_1 = var_60; [L87] state_61 = init_62_arg_1 [L88] SORT_5 init_64_arg_1 = var_60; [L89] state_63 = init_64_arg_1 [L90] SORT_5 init_66_arg_1 = var_60; [L91] state_65 = init_66_arg_1 [L92] SORT_1 init_69_arg_1 = var_11; [L93] state_68 = init_69_arg_1 [L94] SORT_1 init_71_arg_1 = var_11; [L95] state_70 = init_71_arg_1 [L96] SORT_1 init_73_arg_1 = var_11; [L97] state_72 = init_73_arg_1 [L98] SORT_1 init_75_arg_1 = var_11; [L99] state_74 = init_75_arg_1 VAL [init_13_arg_1=0, init_16_arg_1=0, init_21_arg_1=0, init_27_arg_1=0, init_51_arg_1=1, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_59_arg_1=1, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_69_arg_1=0, init_71_arg_1=0, init_73_arg_1=0, init_75_arg_1=0, mask_SORT_1=255, mask_SORT_3=3, mask_SORT_5=1, msb_SORT_1=128, msb_SORT_3=2, msb_SORT_5=1, state_12=0, state_15=0, state_20=0, state_26=0, state_50=1, state_52=0, state_54=0, state_56=0, state_58=1, state_61=0, state_63=0, state_65=0, state_68=0, state_70=0, state_72=0, state_74=0, var_108=3, var_11=0, var_45=1, var_49=1, var_60=0, var_81=0, var_90=1, var_99=2] [L102] input_2 = __VERIFIER_nondet_uchar() [L103] input_2 = input_2 & mask_SORT_1 [L104] input_4 = __VERIFIER_nondet_uchar() [L105] input_4 = input_4 & mask_SORT_3 [L106] input_6 = __VERIFIER_nondet_uchar() [L107] input_7 = __VERIFIER_nondet_uchar() [L108] input_7 = input_7 & mask_SORT_1 [L109] input_8 = __VERIFIER_nondet_uchar() [L110] input_8 = input_8 & mask_SORT_3 [L111] input_9 = __VERIFIER_nondet_uchar() [L112] input_9 = input_9 & mask_SORT_3 [L113] input_10 = __VERIFIER_nondet_uchar() [L114] input_10 = input_10 & mask_SORT_5 [L117] SORT_1 var_14_arg_0 = state_12; [L118] SORT_1 var_14_arg_1 = var_11; [L119] SORT_5 var_14 = var_14_arg_0 == var_14_arg_1; [L120] SORT_1 var_17_arg_0 = state_12; [L121] SORT_1 var_17_arg_1 = state_15; [L122] SORT_5 var_17 = var_17_arg_0 != var_17_arg_1; [L123] SORT_5 var_18_arg_0 = var_14; [L124] SORT_5 var_18_arg_1 = var_17; [L125] SORT_5 var_18 = var_18_arg_0 | var_18_arg_1; [L126] SORT_1 var_19_arg_0 = state_12; [L127] SORT_1 var_19_arg_1 = var_11; [L128] SORT_5 var_19 = var_19_arg_0 == var_19_arg_1; [L129] SORT_1 var_22_arg_0 = state_12; [L130] SORT_1 var_22_arg_1 = state_20; [L131] SORT_5 var_22 = var_22_arg_0 != var_22_arg_1; [L132] SORT_5 var_23_arg_0 = var_19; [L133] SORT_5 var_23_arg_1 = var_22; [L134] SORT_5 var_23 = var_23_arg_0 | var_23_arg_1; [L135] SORT_5 var_24_arg_0 = var_18; [L136] SORT_5 var_24_arg_1 = var_23; [L137] SORT_5 var_24 = var_24_arg_0 & var_24_arg_1; [L138] SORT_1 var_25_arg_0 = state_12; [L139] SORT_1 var_25_arg_1 = var_11; [L140] SORT_5 var_25 = var_25_arg_0 == var_25_arg_1; [L141] SORT_1 var_28_arg_0 = state_12; [L142] SORT_1 var_28_arg_1 = state_26; [L143] SORT_5 var_28 = var_28_arg_0 != var_28_arg_1; [L144] SORT_5 var_29_arg_0 = var_25; [L145] SORT_5 var_29_arg_1 = var_28; [L146] SORT_5 var_29 = var_29_arg_0 | var_29_arg_1; [L147] SORT_5 var_30_arg_0 = var_24; [L148] SORT_5 var_30_arg_1 = var_29; [L149] SORT_5 var_30 = var_30_arg_0 & var_30_arg_1; [L150] SORT_1 var_31_arg_0 = state_15; [L151] SORT_1 var_31_arg_1 = var_11; [L152] SORT_5 var_31 = var_31_arg_0 == var_31_arg_1; [L153] SORT_1 var_32_arg_0 = state_15; [L154] SORT_1 var_32_arg_1 = state_20; [L155] SORT_5 var_32 = var_32_arg_0 != var_32_arg_1; [L156] SORT_5 var_33_arg_0 = var_31; [L157] SORT_5 var_33_arg_1 = var_32; [L158] SORT_5 var_33 = var_33_arg_0 | var_33_arg_1; [L159] SORT_5 var_34_arg_0 = var_30; [L160] SORT_5 var_34_arg_1 = var_33; [L161] SORT_5 var_34 = var_34_arg_0 & var_34_arg_1; [L162] SORT_1 var_35_arg_0 = state_15; [L163] SORT_1 var_35_arg_1 = var_11; [L164] SORT_5 var_35 = var_35_arg_0 == var_35_arg_1; [L165] SORT_1 var_36_arg_0 = state_15; [L166] SORT_1 var_36_arg_1 = state_26; [L167] SORT_5 var_36 = var_36_arg_0 != var_36_arg_1; [L168] SORT_5 var_37_arg_0 = var_35; [L169] SORT_5 var_37_arg_1 = var_36; [L170] SORT_5 var_37 = var_37_arg_0 | var_37_arg_1; [L171] SORT_5 var_38_arg_0 = var_34; [L172] SORT_5 var_38_arg_1 = var_37; [L173] SORT_5 var_38 = var_38_arg_0 & var_38_arg_1; [L174] SORT_1 var_39_arg_0 = state_20; [L175] SORT_1 var_39_arg_1 = var_11; [L176] SORT_5 var_39 = var_39_arg_0 == var_39_arg_1; [L177] SORT_1 var_40_arg_0 = state_20; [L178] SORT_1 var_40_arg_1 = state_26; [L179] SORT_5 var_40 = var_40_arg_0 != var_40_arg_1; [L180] SORT_5 var_41_arg_0 = var_39; [L181] SORT_5 var_41_arg_1 = var_40; [L182] SORT_5 var_41 = var_41_arg_0 | var_41_arg_1; [L183] SORT_5 var_42_arg_0 = var_38; [L184] SORT_5 var_42_arg_1 = var_41; [L185] SORT_5 var_42 = var_42_arg_0 & var_42_arg_1; [L186] SORT_5 var_46_arg_0 = var_42; [L187] SORT_5 var_46 = ~var_46_arg_0; [L188] SORT_5 var_47_arg_0 = var_45; [L189] SORT_5 var_47_arg_1 = var_46; [L190] SORT_5 var_47 = var_47_arg_0 & var_47_arg_1; [L191] var_47 = var_47 & mask_SORT_5 [L192] SORT_5 bad_48_arg_0 = var_47; [L193] CALL __VERIFIER_assert(!(bad_48_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-21 17:18:21,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 109ee6fb23cd6e30d14aec37d73eede06aedf81ad0f99da544662d8756597166 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:18:24,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:18:24,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:18:24,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:18:24,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:18:24,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:18:24,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:18:24,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:18:24,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:18:24,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:18:24,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:18:24,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:18:24,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:18:24,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:18:24,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:18:24,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:18:24,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:18:24,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:18:24,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:18:24,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:18:24,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:18:24,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:18:24,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:18:24,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:18:24,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:18:24,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:18:24,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:18:24,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:18:24,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:18:24,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:18:24,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:18:24,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:18:24,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:18:24,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:18:24,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:18:24,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:18:24,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:18:24,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:18:24,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:18:24,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:18:24,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:18:24,204 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-21 17:18:24,246 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:18:24,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:18:24,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:18:24,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:18:24,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:18:24,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:18:24,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:18:24,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:18:24,250 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:18:24,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:18:24,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:18:24,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:18:24,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:18:24,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:18:24,252 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 17:18:24,253 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 17:18:24,253 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 17:18:24,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:18:24,253 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:18:24,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:18:24,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:18:24,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:18:24,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:18:24,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:18:24,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:18:24,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:18:24,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:18:24,255 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 17:18:24,255 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 17:18:24,255 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:18:24,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:18:24,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:18:24,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 17:18:24,256 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109ee6fb23cd6e30d14aec37d73eede06aedf81ad0f99da544662d8756597166 [2022-11-21 17:18:24,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:18:24,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:18:24,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:18:24,755 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:18:24,755 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:18:24,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c [2022-11-21 17:18:27,911 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:18:28,206 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:18:28,207 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c [2022-11-21 17:18:28,218 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/data/a0fce5254/132ddc585ec54c72b2cb43b841c8906c/FLAG2e25d52cc [2022-11-21 17:18:28,236 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/data/a0fce5254/132ddc585ec54c72b2cb43b841c8906c [2022-11-21 17:18:28,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:18:28,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:18:28,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:18:28,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:18:28,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:18:28,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:28,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea1d419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28, skipping insertion in model container [2022-11-21 17:18:28,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:28,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:18:28,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:18:28,504 WARN L237 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_54f97ce7-c092-49f8-b355-ad0a38da64d2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c[1107,1120] [2022-11-21 17:18:28,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:18:28,803 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:18:28,816 WARN L237 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_54f97ce7-c092-49f8-b355-ad0a38da64d2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c[1107,1120] [2022-11-21 17:18:28,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:18:28,988 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:18:28,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28 WrapperNode [2022-11-21 17:18:28,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:18:28,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:18:28,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:18:28,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:18:28,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:29,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:29,109 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 871 [2022-11-21 17:18:29,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:18:29,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:18:29,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:18:29,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:18:29,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:29,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:29,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:29,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:29,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:29,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:29,217 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:29,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:29,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:18:29,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:18:29,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:18:29,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:18:29,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28" (1/1) ... [2022-11-21 17:18:29,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:18:29,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:18:29,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:18:29,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:18:29,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:18:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:18:29,710 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:18:29,712 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:18:30,984 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:18:31,002 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:18:31,002 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:18:31,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:18:31 BoogieIcfgContainer [2022-11-21 17:18:31,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:18:31,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:18:31,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:18:31,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:18:31,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:18:28" (1/3) ... [2022-11-21 17:18:31,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cd8878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:18:31, skipping insertion in model container [2022-11-21 17:18:31,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:28" (2/3) ... [2022-11-21 17:18:31,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cd8878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:18:31, skipping insertion in model container [2022-11-21 17:18:31,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:18:31" (3/3) ... [2022-11-21 17:18:31,024 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.toy_lock_4.c [2022-11-21 17:18:31,048 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:18:31,048 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:18:31,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:18:31,129 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1df2113d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:18:31,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:18:31,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-11-21 17:18:31,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:18:31,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:18:31,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:18:31,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:18:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-21 17:18:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:18:31,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539154223] [2022-11-21 17:18:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:31,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:18:31,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:18:31,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:18:31,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-21 17:18:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:31,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-21 17:18:31,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:18:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:32,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:18:32,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:18:32,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539154223] [2022-11-21 17:18:32,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539154223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:32,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:32,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:18:32,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284818212] [2022-11-21 17:18:32,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:32,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:18:32,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:18:32,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:18:32,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:18:32,205 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2022-11-21 17:18:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:18:32,393 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-21 17:18:32,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:18:32,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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 [2022-11-21 17:18:32,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:18:32,406 INFO L225 Difference]: With dead ends: 20 [2022-11-21 17:18:32,407 INFO L226 Difference]: Without dead ends: 11 [2022-11-21 17:18:32,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:18:32,415 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:18:32,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:18:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-21 17:18:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-21 17:18:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2022-11-21 17:18:32,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-21 17:18:32,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-21 17:18:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:18:32,469 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-21 17:18:32,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2022-11-21 17:18:32,470 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-21 17:18:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 17:18:32,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:18:32,471 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:32,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:18:32,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:18:32,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:18:32,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:32,689 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-21 17:18:32,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:18:32,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67764397] [2022-11-21 17:18:32,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:32,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:18:32,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:18:32,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:18:32,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-21 17:18:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:33,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-21 17:18:33,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:18:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:35,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:18:51,217 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 342 DAG size of output: 232 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:18:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:51,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:18:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67764397] [2022-11-21 17:18:51,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67764397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:18:51,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:18:51,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 17:18:51,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630284968] [2022-11-21 17:18:51,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:18:51,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:18:51,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:18:51,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:18:51,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:18:51,510 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-11-21 17:18:51,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:18:51,943 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-21 17:18:51,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:18:51,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 [2022-11-21 17:18:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:18:51,945 INFO L225 Difference]: With dead ends: 16 [2022-11-21 17:18:51,945 INFO L226 Difference]: Without dead ends: 14 [2022-11-21 17:18:51,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:18:51,947 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:18:51,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 15 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:18:51,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-21 17:18:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-21 17:18:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-21 17:18:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-21 17:18:51,953 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-21 17:18:51,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:18:51,954 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-21 17:18:51,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-11-21 17:18:51,954 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-21 17:18:51,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 17:18:51,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:18:51,955 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-21 17:18:51,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:18:52,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:18:52,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:18:52,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:52,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-21 17:18:52,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:18:52,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115544595] [2022-11-21 17:18:52,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:18:52,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:18:52,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:18:52,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:18:52,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-21 17:18:53,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:18:53,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:18:53,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 191 conjunts are in the unsatisfiable core [2022-11-21 17:18:53,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:18:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:55,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:19:15,973 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 357 DAG size of output: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:25:40,732 WARN L233 SmtUtils]: Spent 5.60m on a formula simplification. DAG size of input: 724 DAG size of output: 209 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:25:41,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:25:41,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:25:41,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115544595] [2022-11-21 17:25:41,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115544595] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:25:41,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:25:41,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-21 17:25:41,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522243486] [2022-11-21 17:25:41,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:25:41,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:25:41,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:25:41,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:25:41,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=61, Unknown=1, NotChecked=0, Total=90 [2022-11-21 17:25:41,369 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:42,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:42,040 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-21 17:25:42,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:25:42,041 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-21 17:25:42,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:42,041 INFO L225 Difference]: With dead ends: 19 [2022-11-21 17:25:42,042 INFO L226 Difference]: Without dead ends: 17 [2022-11-21 17:25:42,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 347.2s TimeCoverageRelationStatistics Valid=55, Invalid=100, Unknown=1, NotChecked=0, Total=156 [2022-11-21 17:25:42,043 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:42,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 17:25:42,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-21 17:25:42,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-21 17:25:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-11-21 17:25:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-21 17:25:42,051 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-21 17:25:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:42,051 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-21 17:25:42,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-21 17:25:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 17:25:42,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:42,052 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-21 17:25:42,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:25:42,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:25:42,253 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:42,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:42,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-21 17:25:42,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:25:42,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496515338] [2022-11-21 17:25:42,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:25:42,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:25:42,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:25:42,257 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:25:42,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54f97ce7-c092-49f8-b355-ad0a38da64d2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-21 17:25:44,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 17:25:44,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:25:44,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 2346 conjuncts, 898 conjunts are in the unsatisfiable core [2022-11-21 17:25:44,643 INFO L286 TraceCheckSpWp]: Computing forward predicates...