./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.protocols.3.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.protocols.3.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8 --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 33edc18720adc43dae58db23ccbefaa93a9f656bfa0d987ccb1420e761095a17 --- 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-2329fc7 [2022-12-13 12:42:52,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:42:52,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:42:52,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:42:52,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:42:52,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:42:52,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:42:52,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:42:52,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:42:52,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:42:52,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:42:52,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:42:52,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:42:52,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:42:52,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:42:52,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:42:52,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:42:52,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:42:52,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:42:52,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:42:52,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:42:52,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:42:52,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:42:52,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:42:52,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:42:52,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:42:52,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:42:52,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:42:52,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:42:52,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:42:52,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:42:52,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:42:52,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:42:52,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:42:52,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:42:52,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:42:52,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:42:52,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:42:52,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:42:52,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:42:52,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:42:52,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 12:42:52,582 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:42:52,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:42:52,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:42:52,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:42:52,592 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:42:52,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:42:52,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:42:52,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:42:52,593 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:42:52,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:42:52,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:42:52,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:42:52,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:42:52,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:42:52,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:42:52,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:42:52,595 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:42:52,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:42:52,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:42:52,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:42:52,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:42:52,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:42:52,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:42:52,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:42:52,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:42:52,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:42:52,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:42:52,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:42:52,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:42:52,597 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:42:52,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:42:52,597 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:42:52,597 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33edc18720adc43dae58db23ccbefaa93a9f656bfa0d987ccb1420e761095a17 [2022-12-13 12:42:52,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:42:52,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:42:52,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:42:52,785 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:42:52,786 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:42:52,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.protocols.3.prop1-back-serstep.c [2022-12-13 12:42:55,349 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:42:55,609 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:42:55,609 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.protocols.3.prop1-back-serstep.c [2022-12-13 12:42:55,624 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/data/5768716aa/2cabf238b48e438a9f1460561ef71aa9/FLAG787a716db [2022-12-13 12:42:55,921 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/data/5768716aa/2cabf238b48e438a9f1460561ef71aa9 [2022-12-13 12:42:55,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:42:55,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:42:55,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:42:55,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:42:55,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:42:55,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:42:55" (1/1) ... [2022-12-13 12:42:55,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48330ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:55, skipping insertion in model container [2022-12-13 12:42:55,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:42:55" (1/1) ... [2022-12-13 12:42:55,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:42:55,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:42:56,130 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_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.protocols.3.prop1-back-serstep.c[1014,1027] [2022-12-13 12:42:56,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:42:56,328 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:42:56,336 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_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.protocols.3.prop1-back-serstep.c[1014,1027] [2022-12-13 12:42:56,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:42:56,431 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:42:56,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56 WrapperNode [2022-12-13 12:42:56,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:42:56,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:42:56,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:42:56,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:42:56,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56" (1/1) ... [2022-12-13 12:42:56,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56" (1/1) ... [2022-12-13 12:42:56,543 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1670 [2022-12-13 12:42:56,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:42:56,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:42:56,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:42:56,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:42:56,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56" (1/1) ... [2022-12-13 12:42:56,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56" (1/1) ... [2022-12-13 12:42:56,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56" (1/1) ... [2022-12-13 12:42:56,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56" (1/1) ... [2022-12-13 12:42:56,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56" (1/1) ... [2022-12-13 12:42:56,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56" (1/1) ... [2022-12-13 12:42:56,617 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56" (1/1) ... [2022-12-13 12:42:56,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56" (1/1) ... [2022-12-13 12:42:56,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:42:56,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:42:56,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:42:56,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:42:56,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56" (1/1) ... [2022-12-13 12:42:56,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:42:56,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:42:56,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:42:56,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:42:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:42:56,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:42:56,927 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:42:56,928 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:44:31,923 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:44:31,928 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:44:31,928 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 12:44:31,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:44:31 BoogieIcfgContainer [2022-12-13 12:44:31,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:44:31,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:44:31,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:44:31,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:44:31,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:42:55" (1/3) ... [2022-12-13 12:44:31,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3f37b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:44:31, skipping insertion in model container [2022-12-13 12:44:31,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:42:56" (2/3) ... [2022-12-13 12:44:31,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3f37b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:44:31, skipping insertion in model container [2022-12-13 12:44:31,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:44:31" (3/3) ... [2022-12-13 12:44:31,936 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.protocols.3.prop1-back-serstep.c [2022-12-13 12:44:31,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:44:31,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:44:31,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:44:31,987 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;@2e3eb02c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:44:31,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:44:31,991 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) [2022-12-13 12:44:31,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 12:44:31,996 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:44:31,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:44:31,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:44:32,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:44:32,003 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-13 12:44:32,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:44:32,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425507554] [2022-12-13 12:44:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:44:32,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:44:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:44:33,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:44:33,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425507554] [2022-12-13 12:44:33,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425507554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:44:33,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:44:33,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:44:33,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964520443] [2022-12-13 12:44:33,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:44:33,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:44:33,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:44:33,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:44:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:44:33,556 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) [2022-12-13 12:44:35,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 12:44:37,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 12:44:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:44:37,596 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2022-12-13 12:44:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:44:37,598 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 [2022-12-13 12:44:37,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:44:37,603 INFO L225 Difference]: With dead ends: 19 [2022-12-13 12:44:37,603 INFO L226 Difference]: Without dead ends: 10 [2022-12-13 12:44:37,605 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 [2022-12-13 12:44:37,607 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:44:37,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 12:44:37,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-12-13 12:44:37,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-12-13 12:44:37,626 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) [2022-12-13 12:44:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-13 12:44:37,628 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-13 12:44:37,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:44:37,628 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-13 12:44:37,628 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) [2022-12-13 12:44:37,628 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-13 12:44:37,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 12:44:37,628 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:44:37,629 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:44:37,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:44:37,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:44:37,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:44:37,629 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-13 12:44:37,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:44:37,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324180828] [2022-12-13 12:44:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:44:37,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:44:37,765 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 12:44:37,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604141814] [2022-12-13 12:44:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:44:37,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:44:37,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:44:37,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:44:37,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1901a4e-5cc8-42fd-8b26-83d5e0890a7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process