./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/lcm2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/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_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/lcm2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/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 32bit --witnessprinter.graph.data.programhash e0d433468442fea01fd6f51a5fcaea8db7e3b564878994442665eb482321c037 --- 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 20:18:21,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:18:21,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:18:21,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:18:21,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:18:21,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:18:21,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:18:21,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:18:21,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:18:21,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:18:21,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:18:21,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:18:21,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:18:21,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:18:21,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:18:21,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:18:21,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:18:21,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:18:21,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:18:21,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:18:21,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:18:21,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:18:21,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:18:21,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:18:21,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:18:21,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:18:21,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:18:21,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:18:21,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:18:21,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:18:21,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:18:21,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:18:21,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:18:21,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:18:21,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:18:21,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:18:21,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:18:21,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:18:21,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:18:21,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:18:21,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:18:21,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:18:21,641 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:18:21,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:18:21,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:18:21,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:18:21,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:18:21,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:18:21,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:18:21,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:18:21,643 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:18:21,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:18:21,644 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:18:21,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:18:21,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:18:21,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:18:21,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:18:21,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:18:21,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:18:21,645 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:18:21,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:18:21,646 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:18:21,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:18:21,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:18:21,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:18:21,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:18:21,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:18:21,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:18:21,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:18:21,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:18:21,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:18:21,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:18:21,648 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:18:21,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:18:21,648 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:18:21,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:18:21,648 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:18:21,649 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_de348b2c-bff6-4263-8785-85f71ca578c7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0d433468442fea01fd6f51a5fcaea8db7e3b564878994442665eb482321c037 [2022-12-13 20:18:21,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:18:21,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:18:21,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:18:21,861 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:18:21,862 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:18:21,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench/lcm2.c [2022-12-13 20:18:24,388 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:18:24,522 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:18:24,522 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/sv-benchmarks/c/nla-digbench/lcm2.c [2022-12-13 20:18:24,527 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/data/ec5575ca1/7448c5beeb3e4d88b6a2e410b54c6b12/FLAGf3ba0fa57 [2022-12-13 20:18:24,540 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/data/ec5575ca1/7448c5beeb3e4d88b6a2e410b54c6b12 [2022-12-13 20:18:24,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:18:24,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:18:24,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:18:24,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:18:24,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:18:24,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644db2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24, skipping insertion in model container [2022-12-13 20:18:24,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:18:24,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:18:24,695 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_de348b2c-bff6-4263-8785-85f71ca578c7/sv-benchmarks/c/nla-digbench/lcm2.c[537,550] [2022-12-13 20:18:24,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:18:24,719 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:18:24,731 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_de348b2c-bff6-4263-8785-85f71ca578c7/sv-benchmarks/c/nla-digbench/lcm2.c[537,550] [2022-12-13 20:18:24,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:18:24,749 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:18:24,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24 WrapperNode [2022-12-13 20:18:24,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:18:24,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:18:24,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:18:24,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:18:24,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,781 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 50 [2022-12-13 20:18:24,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:18:24,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:18:24,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:18:24,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:18:24,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,799 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:18:24,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:18:24,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:18:24,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:18:24,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24" (1/1) ... [2022-12-13 20:18:24,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:18:24,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:18:24,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:18:24,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:18:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:18:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 20:18:24,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 20:18:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:18:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:18:24,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:18:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 20:18:24,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 20:18:24,919 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:18:24,921 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:18:25,015 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:18:25,019 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:18:25,019 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 20:18:25,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:18:25 BoogieIcfgContainer [2022-12-13 20:18:25,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:18:25,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:18:25,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:18:25,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:18:25,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:18:24" (1/3) ... [2022-12-13 20:18:25,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6202387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:18:25, skipping insertion in model container [2022-12-13 20:18:25,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:18:24" (2/3) ... [2022-12-13 20:18:25,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6202387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:18:25, skipping insertion in model container [2022-12-13 20:18:25,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:18:25" (3/3) ... [2022-12-13 20:18:25,027 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2.c [2022-12-13 20:18:25,041 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:18:25,042 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:18:25,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:18:25,081 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;@53c94817, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:18:25,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 20:18:25,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:18:25,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 20:18:25,090 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:18:25,091 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:18:25,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:18:25,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:18:25,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2035108643, now seen corresponding path program 1 times [2022-12-13 20:18:25,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:18:25,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553606745] [2022-12-13 20:18:25,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:18:25,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:18:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:18:25,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:18:25,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553606745] [2022-12-13 20:18:25,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:18:25,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859341975] [2022-12-13 20:18:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:18:25,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:18:25,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:18:25,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:18:25,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:18:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:18:25,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 20:18:25,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:18:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 20:18:25,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:18:25,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859341975] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:18:25,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:18:25,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:18:25,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084055202] [2022-12-13 20:18:25,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:18:25,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:18:25,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:18:25,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:18:25,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:18:25,311 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 20:18:25,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:18:25,328 INFO L93 Difference]: Finished difference Result 49 states and 72 transitions. [2022-12-13 20:18:25,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:18:25,330 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-12-13 20:18:25,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:18:25,335 INFO L225 Difference]: With dead ends: 49 [2022-12-13 20:18:25,335 INFO L226 Difference]: Without dead ends: 22 [2022-12-13 20:18:25,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:18:25,345 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:18:25,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:18:25,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-13 20:18:25,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-13 20:18:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 20:18:25,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-12-13 20:18:25,380 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 28 [2022-12-13 20:18:25,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:18:25,380 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-12-13 20:18:25,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 20:18:25,380 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-12-13 20:18:25,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 20:18:25,381 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:18:25,381 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:18:25,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:18:25,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:18:25,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:18:25,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:18:25,585 INFO L85 PathProgramCache]: Analyzing trace with hash -118907485, now seen corresponding path program 1 times [2022-12-13 20:18:25,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:18:25,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509704192] [2022-12-13 20:18:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:18:25,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:18:25,652 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:18:25,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998588428] [2022-12-13 20:18:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:18:25,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:18:25,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:18:25,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:18:25,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:18:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:18:25,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 20:18:25,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:18:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 20:18:25,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:18:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 20:18:26,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:18:26,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509704192] [2022-12-13 20:18:26,059 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:18:26,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998588428] [2022-12-13 20:18:26,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998588428] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 20:18:26,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:18:26,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-12-13 20:18:26,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325334708] [2022-12-13 20:18:26,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:18:26,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:18:26,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:18:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:18:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:18:26,063 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 20:18:28,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 20:18:29,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 20:18:31,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 20:18:31,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:18:31,611 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2022-12-13 20:18:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:18:31,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-12-13 20:18:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:18:31,613 INFO L225 Difference]: With dead ends: 33 [2022-12-13 20:18:31,613 INFO L226 Difference]: Without dead ends: 30 [2022-12-13 20:18:31,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:18:31,615 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:18:31,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2022-12-13 20:18:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-13 20:18:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-12-13 20:18:31,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:18:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-12-13 20:18:31,622 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 28 [2022-12-13 20:18:31,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:18:31,623 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-12-13 20:18:31,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 20:18:31,624 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-12-13 20:18:31,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 20:18:31,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:18:31,624 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:18:31,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:18:31,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:18:31,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:18:31,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:18:31,828 INFO L85 PathProgramCache]: Analyzing trace with hash 569544126, now seen corresponding path program 1 times [2022-12-13 20:18:31,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:18:31,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049432077] [2022-12-13 20:18:31,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:18:31,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:18:31,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:18:31,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572196313] [2022-12-13 20:18:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:18:31,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:18:31,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:18:31,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:18:31,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de348b2c-bff6-4263-8785-85f71ca578c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process