./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.01.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.01.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 962bf6173fc6078ce41ca1af220429c7629e07f8a02d3d6059bd9727e276c6a2 --- 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-5e519f3 [2022-11-03 02:13:18,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:13:18,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:13:18,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:13:18,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:13:18,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:13:18,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:13:18,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:13:18,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:13:18,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:13:18,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:13:18,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:13:18,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:13:18,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:13:18,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:13:18,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:13:18,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:13:18,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:13:18,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:13:18,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:13:18,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:13:18,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:13:18,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:13:18,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:13:18,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:13:18,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:13:18,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:13:18,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:13:18,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:13:18,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:13:18,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:13:18,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:13:18,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:13:18,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:13:18,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:13:18,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:13:18,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:13:18,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:13:18,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:13:18,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:13:18,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:13:18,705 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:13:18,728 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:13:18,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:13:18,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:13:18,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:13:18,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:13:18,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:13:18,730 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:13:18,730 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:13:18,730 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:13:18,730 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:13:18,731 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:13:18,731 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:13:18,731 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:13:18,731 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:13:18,731 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:13:18,732 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:13:18,732 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:13:18,732 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:13:18,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:13:18,733 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:13:18,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:13:18,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:13:18,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:13:18,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:13:18,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:13:18,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:13:18,735 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:13:18,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:13:18,735 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:13:18,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:13:18,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:13:18,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:13:18,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:13:18,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:13:18,736 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:13:18,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:13:18,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:13:18,737 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:13:18,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:13:18,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:13:18,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:13:18,738 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_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 962bf6173fc6078ce41ca1af220429c7629e07f8a02d3d6059bd9727e276c6a2 [2022-11-03 02:13:18,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:13:18,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:13:18,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:13:18,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:13:18,997 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:13:18,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.01.cil-1.c [2022-11-03 02:13:19,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/data/0bb6bf7cd/de36b5ebe88d40eb98d7364eea7c7344/FLAG6a0924f8f [2022-11-03 02:13:19,634 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:13:19,635 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.01.cil-1.c [2022-11-03 02:13:19,645 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/data/0bb6bf7cd/de36b5ebe88d40eb98d7364eea7c7344/FLAG6a0924f8f [2022-11-03 02:13:19,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/data/0bb6bf7cd/de36b5ebe88d40eb98d7364eea7c7344 [2022-11-03 02:13:19,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:13:19,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:13:19,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:13:19,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:13:19,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:13:19,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:13:19" (1/1) ... [2022-11-03 02:13:19,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ad7da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:19, skipping insertion in model container [2022-11-03 02:13:19,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:13:19" (1/1) ... [2022-11-03 02:13:19,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:13:20,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:13:20,218 WARN L230 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_3573fbb6-522a-464c-8284-394ca26be5f1/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.01.cil-1.c[913,926] [2022-11-03 02:13:20,260 WARN L230 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_3573fbb6-522a-464c-8284-394ca26be5f1/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.01.cil-1.c[5994,6007] [2022-11-03 02:13:20,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:13:20,331 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:13:20,342 WARN L230 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_3573fbb6-522a-464c-8284-394ca26be5f1/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.01.cil-1.c[913,926] [2022-11-03 02:13:20,366 WARN L230 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_3573fbb6-522a-464c-8284-394ca26be5f1/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.01.cil-1.c[5994,6007] [2022-11-03 02:13:20,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:13:20,401 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:13:20,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20 WrapperNode [2022-11-03 02:13:20,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:13:20,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:13:20,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:13:20,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:13:20,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20" (1/1) ... [2022-11-03 02:13:20,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20" (1/1) ... [2022-11-03 02:13:20,457 INFO L138 Inliner]: procedures = 50, calls = 52, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 418 [2022-11-03 02:13:20,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:13:20,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:13:20,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:13:20,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:13:20,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20" (1/1) ... [2022-11-03 02:13:20,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20" (1/1) ... [2022-11-03 02:13:20,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20" (1/1) ... [2022-11-03 02:13:20,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20" (1/1) ... [2022-11-03 02:13:20,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20" (1/1) ... [2022-11-03 02:13:20,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20" (1/1) ... [2022-11-03 02:13:20,491 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20" (1/1) ... [2022-11-03 02:13:20,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20" (1/1) ... [2022-11-03 02:13:20,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:13:20,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:13:20,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:13:20,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:13:20,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20" (1/1) ... [2022-11-03 02:13:20,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:13:20,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:13:20,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:13:20,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:13:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:13:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-03 02:13:20,593 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-03 02:13:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-11-03 02:13:20,594 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-11-03 02:13:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-03 02:13:20,594 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-03 02:13:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-03 02:13:20,595 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-03 02:13:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-03 02:13:20,595 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-03 02:13:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-03 02:13:20,595 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-03 02:13:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-03 02:13:20,596 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-03 02:13:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:13:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-03 02:13:20,597 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-03 02:13:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:13:20,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:13:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-03 02:13:20,597 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-03 02:13:20,690 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:13:20,692 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:13:21,248 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:13:21,405 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:13:21,406 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-03 02:13:21,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:13:21 BoogieIcfgContainer [2022-11-03 02:13:21,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:13:21,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:13:21,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:13:21,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:13:21,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:13:19" (1/3) ... [2022-11-03 02:13:21,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fef57b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:13:21, skipping insertion in model container [2022-11-03 02:13:21,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:20" (2/3) ... [2022-11-03 02:13:21,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fef57b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:13:21, skipping insertion in model container [2022-11-03 02:13:21,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:13:21" (3/3) ... [2022-11-03 02:13:21,418 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.01.cil-1.c [2022-11-03 02:13:21,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:13:21,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 02:13:21,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:13:21,524 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7767dcdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:13:21,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 02:13:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 91 states have internal predecessors, (129), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-03 02:13:21,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:13:21,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:21,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:21,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:21,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:21,551 INFO L85 PathProgramCache]: Analyzing trace with hash -944184445, now seen corresponding path program 1 times [2022-11-03 02:13:21,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:21,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151459163] [2022-11-03 02:13:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:21,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:13:21,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:13:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:13:21,799 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:13:21,801 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:13:21,802 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-03 02:13:21,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-03 02:13:21,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:13:21,810 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:13:21,815 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:13:21,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:13:21 BoogieIcfgContainer [2022-11-03 02:13:21,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:13:21,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:13:21,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:13:21,878 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:13:21,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:13:21" (3/4) ... [2022-11-03 02:13:21,880 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 02:13:21,938 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:13:21,938 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:13:21,939 INFO L158 Benchmark]: Toolchain (without parser) took 1956.55ms. Allocated memory is still 111.1MB. Free memory was 80.7MB in the beginning and 49.2MB in the end (delta: 31.6MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-11-03 02:13:21,939 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 79.7MB. Free memory is still 37.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:13:21,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.01ms. Allocated memory is still 111.1MB. Free memory was 80.7MB in the beginning and 82.2MB in the end (delta: -1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:13:21,940 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.04ms. Allocated memory is still 111.1MB. Free memory was 82.2MB in the beginning and 79.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:13:21,941 INFO L158 Benchmark]: Boogie Preprocessor took 35.73ms. Allocated memory is still 111.1MB. Free memory was 79.7MB in the beginning and 77.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:13:21,941 INFO L158 Benchmark]: RCFGBuilder took 911.59ms. Allocated memory is still 111.1MB. Free memory was 77.4MB in the beginning and 70.8MB in the end (delta: 6.6MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2022-11-03 02:13:21,942 INFO L158 Benchmark]: TraceAbstraction took 464.72ms. Allocated memory is still 111.1MB. Free memory was 70.2MB in the beginning and 53.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-03 02:13:21,942 INFO L158 Benchmark]: Witness Printer took 60.80ms. Allocated memory is still 111.1MB. Free memory was 53.0MB in the beginning and 49.2MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 02:13:21,944 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 79.7MB. Free memory is still 37.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.01ms. Allocated memory is still 111.1MB. Free memory was 80.7MB in the beginning and 82.2MB in the end (delta: -1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.04ms. Allocated memory is still 111.1MB. Free memory was 82.2MB in the beginning and 79.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.73ms. Allocated memory is still 111.1MB. Free memory was 79.7MB in the beginning and 77.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 911.59ms. Allocated memory is still 111.1MB. Free memory was 77.4MB in the beginning and 70.8MB in the end (delta: 6.6MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * TraceAbstraction took 464.72ms. Allocated memory is still 111.1MB. Free memory was 70.2MB in the beginning and 53.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 60.80ms. Allocated memory is still 111.1MB. Free memory was 53.0MB in the beginning and 49.2MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. 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 - CounterExampleResult [Line: 27]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int q_buf_0 ; [L33] int q_free ; [L34] int q_read_ev ; [L35] int q_write_ev ; [L36] int p_num_write ; [L37] int p_last_write ; [L38] int p_dw_st ; [L39] int p_dw_pc ; [L40] int p_dw_i ; [L41] int c_num_read ; [L42] int c_last_read ; [L43] int c_dr_st ; [L44] int c_dr_pc ; [L45] int c_dr_i ; [L152] static int a_t ; [L394] int m_pc = 0; [L395] int t1_pc = 0; [L396] int m_st ; [L397] int t1_st ; [L398] int m_i ; [L399] int t1_i ; [L400] int M_E = 2; [L401] int T1_E = 2; [L402] int E_M = 2; [L403] int E_1 = 2; [L407] int token ; [L409] int local ; [L856] COND TRUE __VERIFIER_nondet_int() [L857] CALL main1() [L368] int __retres1 ; [L372] CALL init_model1() [L354] q_free = 1 [L355] q_write_ev = 2 [L356] q_read_ev = q_write_ev [L357] p_num_write = 0 [L358] p_dw_pc = 0 [L359] p_dw_i = 1 [L360] c_num_read = 0 [L361] c_dr_pc = 0 [L362] c_dr_i = 1 [L372] RET init_model1() [L373] CALL start_simulation1() [L322] int kernel_st ; [L323] int tmp ; [L327] kernel_st = 0 [L328] CALL init_threads1() [L214] COND TRUE (int )p_dw_i == 1 [L215] p_dw_st = 0 [L219] COND TRUE (int )c_dr_i == 1 [L220] c_dr_st = 0 [L328] RET init_threads1() [L331] COND TRUE 1 [L334] kernel_st = 1 [L335] CALL eval1() [L249] int tmp ; [L250] int tmp___0 ; [L251] int tmp___1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, token=0] [L255] COND TRUE 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, token=0] [L258] CALL, EXPR exists_runnable_thread1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, token=0] [L229] int __retres1 ; [L232] COND TRUE (int )p_dw_st == 0 [L233] __retres1 = 1 [L245] return (__retres1); [L258] RET, EXPR exists_runnable_thread1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_M=2, exists_runnable_thread1()=1, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, token=0] [L258] tmp___1 = exists_runnable_thread1() [L260] COND TRUE \read(tmp___1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, tmp___1=1, token=0] [L265] COND TRUE (int )p_dw_st == 0 [L267] tmp = __VERIFIER_nondet_int() [L269] COND FALSE !(\read(tmp)) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, tmp=0, tmp___1=1, token=0] [L275] CALL error1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, token=0] [L27] reach_error() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, token=0] - UnprovableResult [Line: 390]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 119 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=119occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 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 proved your program to be incorrect! [2022-11-03 02:13:21,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3573fbb6-522a-464c-8284-394ca26be5f1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE