./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/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_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/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_6f255820-dd37-459e-b351-f030bf61ba2f/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 19f6395c4ae8060ccaae4c72a4fb1648974175c0b145c9e17ae6b3ed3f5f936e --- 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 21:35:19,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:35:19,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:35:19,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:35:19,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:35:19,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:35:19,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:35:19,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:35:19,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:35:19,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:35:19,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:35:19,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:35:19,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:35:19,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:35:19,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:35:19,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:35:19,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:35:19,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:35:19,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:35:19,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:35:19,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:35:19,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:35:19,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:35:19,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:35:19,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:35:19,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:35:19,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:35:19,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:35:19,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:35:19,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:35:19,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:35:19,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:35:19,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:35:19,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:35:19,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:35:19,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:35:19,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:35:19,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:35:19,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:35:19,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:35:19,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:35:19,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 21:35:19,960 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:35:19,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:35:19,960 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:35:19,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:35:19,966 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:35:19,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:35:19,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:35:19,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:35:19,967 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:35:19,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:35:19,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:35:19,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:35:19,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:35:19,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:35:19,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:35:19,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:35:19,969 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:35:19,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:35:19,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:35:19,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:35:19,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:35:19,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:35:19,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:35:19,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:35:19,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:35:19,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:35:19,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:35:19,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:35:19,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:35:19,971 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:35:19,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:35:19,971 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:35:19,971 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_6f255820-dd37-459e-b351-f030bf61ba2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19f6395c4ae8060ccaae4c72a4fb1648974175c0b145c9e17ae6b3ed3f5f936e [2022-12-13 21:35:20,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:35:20,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:35:20,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:35:20,183 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:35:20,184 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:35:20,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2022-12-13 21:35:22,720 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:35:22,903 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:35:22,903 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2022-12-13 21:35:22,912 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/data/edc71392d/10903e0d6bb34425b9405c5b132d2737/FLAG35e0d642a [2022-12-13 21:35:23,293 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/data/edc71392d/10903e0d6bb34425b9405c5b132d2737 [2022-12-13 21:35:23,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:35:23,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:35:23,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:35:23,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:35:23,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:35:23,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200d22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23, skipping insertion in model container [2022-12-13 21:35:23,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:35:23,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:35:23,465 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_6f255820-dd37-459e-b351-f030bf61ba2f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1107,1120] [2022-12-13 21:35:23,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:35:23,536 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:35:23,546 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_6f255820-dd37-459e-b351-f030bf61ba2f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1107,1120] [2022-12-13 21:35:23,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:35:23,602 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:35:23,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23 WrapperNode [2022-12-13 21:35:23,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:35:23,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:35:23,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:35:23,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:35:23,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,643 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 421 [2022-12-13 21:35:23,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:35:23,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:35:23,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:35:23,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:35:23,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,668 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:35:23,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:35:23,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:35:23,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:35:23,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23" (1/1) ... [2022-12-13 21:35:23,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:35:23,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:35:23,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:35:23,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:35:23,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:35:23,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:35:23,895 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:35:23,897 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:35:26,380 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:35:26,386 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:35:26,386 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 21:35:26,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:35:26 BoogieIcfgContainer [2022-12-13 21:35:26,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:35:26,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:35:26,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:35:26,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:35:26,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:35:23" (1/3) ... [2022-12-13 21:35:26,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3407fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:35:26, skipping insertion in model container [2022-12-13 21:35:26,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:23" (2/3) ... [2022-12-13 21:35:26,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3407fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:35:26, skipping insertion in model container [2022-12-13 21:35:26,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:35:26" (3/3) ... [2022-12-13 21:35:26,395 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_loop_v.c [2022-12-13 21:35:26,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:35:26,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:35:26,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:35:26,447 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;@6fd17d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:35:26,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 21:35:26,450 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 21:35:26,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 21:35:26,455 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:35:26,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:35:26,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:35:26,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:26,459 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-13 21:35:26,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:26,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425959271] [2022-12-13 21:35:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:26,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:35:26,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:35:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:35:26,603 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:35:26,604 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:35:26,605 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 21:35:26,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:35:26,610 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 21:35:26,613 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:35:26,623 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-13 21:35:26,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:35:26 BoogieIcfgContainer [2022-12-13 21:35:26,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:35:26,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:35:26,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:35:26,628 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:35:26,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:35:26" (3/4) ... [2022-12-13 21:35:26,631 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 21:35:26,631 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:35:26,632 INFO L158 Benchmark]: Toolchain (without parser) took 3333.95ms. Allocated memory was 117.4MB in the beginning and 476.1MB in the end (delta: 358.6MB). Free memory was 83.5MB in the beginning and 390.1MB in the end (delta: -306.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-12-13 21:35:26,633 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:35:26,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.61ms. Allocated memory is still 117.4MB. Free memory was 83.2MB in the beginning and 63.5MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 21:35:26,633 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.25ms. Allocated memory is still 117.4MB. Free memory was 63.5MB in the beginning and 58.4MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 21:35:26,634 INFO L158 Benchmark]: Boogie Preprocessor took 30.92ms. Allocated memory is still 117.4MB. Free memory was 58.4MB in the beginning and 55.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:35:26,634 INFO L158 Benchmark]: RCFGBuilder took 2713.35ms. Allocated memory was 117.4MB in the beginning and 476.1MB in the end (delta: 358.6MB). Free memory was 55.2MB in the beginning and 411.0MB in the end (delta: -355.8MB). Peak memory consumption was 142.8MB. Max. memory is 16.1GB. [2022-12-13 21:35:26,635 INFO L158 Benchmark]: TraceAbstraction took 237.85ms. Allocated memory is still 476.1MB. Free memory was 410.0MB in the beginning and 391.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 21:35:26,635 INFO L158 Benchmark]: Witness Printer took 3.41ms. Allocated memory is still 476.1MB. Free memory was 391.1MB in the beginning and 390.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:35:26,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.61ms. Allocated memory is still 117.4MB. Free memory was 83.2MB in the beginning and 63.5MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.25ms. Allocated memory is still 117.4MB. Free memory was 63.5MB in the beginning and 58.4MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.92ms. Allocated memory is still 117.4MB. Free memory was 58.4MB in the beginning and 55.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2713.35ms. Allocated memory was 117.4MB in the beginning and 476.1MB in the end (delta: 358.6MB). Free memory was 55.2MB in the beginning and 411.0MB in the end (delta: -355.8MB). Peak memory consumption was 142.8MB. Max. memory is 16.1GB. * TraceAbstraction took 237.85ms. Allocated memory is still 476.1MB. Free memory was 410.0MB in the beginning and 391.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 3.41ms. Allocated memory is still 476.1MB. Free memory was 391.1MB in the beginning and 390.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 74, overapproximation of bitwiseAnd at line 79. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_27 mask_SORT_27 = (SORT_27)-1 >> (sizeof(SORT_27) * 8 - 6); [L29] const SORT_27 msb_SORT_27 = (SORT_27)1 << (6 - 1); [L31] const SORT_1 var_3 = 0; [L32] const SORT_1 var_9 = 1; [L33] const SORT_27 var_28 = 1; [L34] const SORT_27 var_32 = 19; [L35] const SORT_27 var_45 = 17; [L36] const SORT_27 var_158 = 3; [L38] SORT_1 input_2; [L40] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L41] SORT_1 state_13 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L42] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L43] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L44] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_27 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_27; [L50] SORT_1 init_5_arg_1 = var_3; [L51] state_4 = init_5_arg_1 [L52] SORT_1 init_14_arg_1 = var_9; [L53] state_13 = init_14_arg_1 [L54] SORT_1 init_16_arg_1 = var_3; [L55] state_15 = init_16_arg_1 [L56] SORT_1 init_18_arg_1 = var_3; [L57] state_17 = init_18_arg_1 [L58] SORT_1 init_20_arg_1 = var_3; [L59] state_19 = init_20_arg_1 [L60] SORT_1 init_22_arg_1 = var_3; [L61] state_21 = init_22_arg_1 [L62] SORT_1 init_24_arg_1 = var_3; [L63] state_23 = init_24_arg_1 [L64] SORT_1 init_26_arg_1 = var_9; [L65] state_25 = init_26_arg_1 [L66] SORT_27 init_30_arg_1 = var_28; [L67] state_29 = init_30_arg_1 VAL [init_14_arg_1=1, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=1, init_30_arg_1=1, init_5_arg_1=0, mask_SORT_1=1, mask_SORT_27=63, msb_SORT_1=1, msb_SORT_27=32, state_13=1, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=1, state_29=1, state_4=0, var_158=3, var_28=1, var_3=0, var_32=19, var_45=17, var_9=1] [L70] input_2 = __VERIFIER_nondet_uchar() [L73] SORT_1 var_6_arg_0 = state_4; [L74] SORT_1 var_6 = ~var_6_arg_0; [L75] SORT_1 var_10_arg_0 = var_6; [L76] SORT_1 var_10 = ~var_10_arg_0; [L77] SORT_1 var_11_arg_0 = var_9; [L78] SORT_1 var_11_arg_1 = var_10; [L79] SORT_1 var_11 = var_11_arg_0 & var_11_arg_1; [L80] var_11 = var_11 & mask_SORT_1 [L81] SORT_1 bad_12_arg_0 = var_11; [L82] CALL __VERIFIER_assert(!(bad_12_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 21:35:26,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/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_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/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 19f6395c4ae8060ccaae4c72a4fb1648974175c0b145c9e17ae6b3ed3f5f936e --- 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 21:35:28,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:35:28,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:35:28,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:35:28,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:35:28,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:35:28,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:35:28,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:35:28,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:35:28,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:35:28,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:35:28,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:35:28,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:35:28,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:35:28,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:35:28,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:35:28,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:35:28,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:35:28,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:35:28,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:35:28,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:35:28,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:35:28,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:35:28,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:35:28,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:35:28,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:35:28,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:35:28,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:35:28,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:35:28,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:35:28,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:35:28,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:35:28,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:35:28,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:35:28,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:35:28,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:35:28,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:35:28,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:35:28,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:35:28,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:35:28,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:35:28,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-12-13 21:35:28,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:35:28,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:35:28,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:35:28,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:35:28,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:35:28,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:35:28,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:35:28,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:35:28,475 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:35:28,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:35:28,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:35:28,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:35:28,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:35:28,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:35:28,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:35:28,477 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 21:35:28,477 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 21:35:28,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:35:28,477 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:35:28,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:35:28,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:35:28,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:35:28,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:35:28,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:35:28,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:35:28,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:35:28,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:35:28,479 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 21:35:28,479 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 21:35:28,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:35:28,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:35:28,485 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:35:28,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:35:28,485 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 21:35:28,486 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:35:28,486 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_6f255820-dd37-459e-b351-f030bf61ba2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19f6395c4ae8060ccaae4c72a4fb1648974175c0b145c9e17ae6b3ed3f5f936e [2022-12-13 21:35:28,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:35:28,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:35:28,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:35:28,738 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:35:28,738 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:35:28,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2022-12-13 21:35:31,362 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:35:31,568 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:35:31,569 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2022-12-13 21:35:31,578 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/data/39d5283dd/947dfaa333b54c13b27c8ae1853e37fc/FLAG0ec5b5ecb [2022-12-13 21:35:31,590 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/data/39d5283dd/947dfaa333b54c13b27c8ae1853e37fc [2022-12-13 21:35:31,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:35:31,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:35:31,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:35:31,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:35:31,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:35:31,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523e90a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31, skipping insertion in model container [2022-12-13 21:35:31,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:35:31,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:35:31,725 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_6f255820-dd37-459e-b351-f030bf61ba2f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1107,1120] [2022-12-13 21:35:31,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:35:31,798 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:35:31,806 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_6f255820-dd37-459e-b351-f030bf61ba2f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1107,1120] [2022-12-13 21:35:31,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:35:31,887 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:35:31,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31 WrapperNode [2022-12-13 21:35:31,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:35:31,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:35:31,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:35:31,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:35:31,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,941 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 421 [2022-12-13 21:35:31,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:35:31,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:35:31,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:35:31,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:35:31,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,977 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:35:31,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:35:31,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:35:31,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:35:31,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31" (1/1) ... [2022-12-13 21:35:31,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:35:32,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:35:32,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:35:32,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:35:32,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:35:32,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:35:32,193 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:35:32,195 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:35:32,544 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:35:32,551 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:35:32,551 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 21:35:32,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:35:32 BoogieIcfgContainer [2022-12-13 21:35:32,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:35:32,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:35:32,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:35:32,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:35:32,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:35:31" (1/3) ... [2022-12-13 21:35:32,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7450e198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:35:32, skipping insertion in model container [2022-12-13 21:35:32,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:31" (2/3) ... [2022-12-13 21:35:32,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7450e198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:35:32, skipping insertion in model container [2022-12-13 21:35:32,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:35:32" (3/3) ... [2022-12-13 21:35:32,562 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_loop_v.c [2022-12-13 21:35:32,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:35:32,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:35:32,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:35:32,623 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;@3df40653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:35:32,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 21:35:32,626 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 21:35:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 21:35:32,631 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:35:32,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:35:32,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:35:32,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:32,637 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-13 21:35:32,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:35:32,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737170441] [2022-12-13 21:35:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:32,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:35:32,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:35:32,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:35:32,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 21:35:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:32,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:35:32,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:32,830 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 21:35:32,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:35:32,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:35:32,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737170441] [2022-12-13 21:35:32,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737170441] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:32,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:32,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:35:32,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630517143] [2022-12-13 21:35:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:32,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:35:32,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:35:32,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:35:32,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:35:32,863 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 21:35:32,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:35:32,919 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-13 21:35:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:35:32,921 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 21:35:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:35:32,926 INFO L225 Difference]: With dead ends: 20 [2022-12-13 21:35:32,927 INFO L226 Difference]: Without dead ends: 11 [2022-12-13 21:35:32,928 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 21:35:32,931 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:35:32,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:35:32,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-13 21:35:32,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-13 21:35:32,951 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 21:35:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-13 21:35:32,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-13 21:35:32,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:35:32,952 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-13 21:35:32,952 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 21:35:32,952 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-13 21:35:32,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 21:35:32,953 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:35:32,953 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:32,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:35:33,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:35:33,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:35:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:33,157 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-13 21:35:33,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:35:33,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263050771] [2022-12-13 21:35:33,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:33,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:35:33,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:35:33,169 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:35:33,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 21:35:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:33,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 21:35:33,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:33,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:35:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:33,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:35:33,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263050771] [2022-12-13 21:35:33,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263050771] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:35:33,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:35:33,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 21:35:33,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772807343] [2022-12-13 21:35:33,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:35:33,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:35:33,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:35:33,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:35:33,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:35:33,773 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:35:33,891 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-13 21:35:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:35:33,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 21:35:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:35:33,892 INFO L225 Difference]: With dead ends: 16 [2022-12-13 21:35:33,893 INFO L226 Difference]: Without dead ends: 14 [2022-12-13 21:35:33,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:35:33,894 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:35:33,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:35:33,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-13 21:35:33,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-13 21:35:33,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-13 21:35:33,899 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-13 21:35:33,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:35:33,899 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-13 21:35:33,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:33,899 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-13 21:35:33,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 21:35:33,900 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:35:33,900 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 21:35:33,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 21:35:34,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:35:34,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:35:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:34,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-13 21:35:34,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:35:34,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007447101] [2022-12-13 21:35:34,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:35:34,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:35:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:35:34,115 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:35:34,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 21:35:34,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:35:34,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:35:34,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 128 conjunts are in the unsatisfiable core [2022-12-13 21:35:34,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:34,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:35:46,126 WARN L233 SmtUtils]: Spent 9.53s on a formula simplification. DAG size of input: 297 DAG size of output: 261 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:35:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:46,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:35:46,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007447101] [2022-12-13 21:35:46,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007447101] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:35:46,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:35:46,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 21:35:46,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55755653] [2022-12-13 21:35:46,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:35:46,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:35:46,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:35:46,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:35:46,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:35:46,291 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:46,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:35:46,500 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-12-13 21:35:46,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:35:46,500 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 21:35:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:35:46,501 INFO L225 Difference]: With dead ends: 19 [2022-12-13 21:35:46,501 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 21:35:46,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:35:46,502 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:35:46,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:35:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 21:35:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-13 21:35:46,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-13 21:35:46,507 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-12-13 21:35:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:35:46,507 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-13 21:35:46,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-13 21:35:46,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 21:35:46,508 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:35:46,508 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-13 21:35:46,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-12-13 21:35:46,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:35:46,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:35:46,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:46,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-12-13 21:35:46,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:35:46,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162218872] [2022-12-13 21:35:46,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:35:46,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:35:46,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:35:46,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:35:46,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 21:35:47,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 21:35:47,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:35:47,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 105 conjunts are in the unsatisfiable core [2022-12-13 21:35:47,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:47,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:59,404 WARN L233 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 367 DAG size of output: 275 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:36:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:59,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:36:59,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162218872] [2022-12-13 21:36:59,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162218872] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:36:59,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:36:59,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-12-13 21:36:59,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274235285] [2022-12-13 21:36:59,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:36:59,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 21:36:59,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:36:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 21:36:59,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=193, Unknown=3, NotChecked=0, Total=240 [2022-12-13 21:36:59,636 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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 21:37:00,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:37:00,215 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-12-13 21:37:00,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:37:00,215 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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 14 [2022-12-13 21:37:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:37:00,216 INFO L225 Difference]: With dead ends: 22 [2022-12-13 21:37:00,216 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 21:37:00,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 71.2s TimeCoverageRelationStatistics Valid=107, Invalid=310, Unknown=3, NotChecked=0, Total=420 [2022-12-13 21:37:00,218 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:37:00,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 37 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:37:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 21:37:00,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-12-13 21:37:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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 21:37:00,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-12-13 21:37:00,223 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-12-13 21:37:00,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:37:00,223 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-12-13 21:37:00,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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 21:37:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-12-13 21:37:00,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 21:37:00,224 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:37:00,225 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-12-13 21:37:00,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 21:37:00,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:37:00,426 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:37:00,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:00,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-12-13 21:37:00,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:37:00,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724723155] [2022-12-13 21:37:00,431 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:37:00,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:37:00,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:37:00,432 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:37:00,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 21:37:00,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:37:00,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:37:00,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 343 conjunts are in the unsatisfiable core [2022-12-13 21:37:00,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:37:02,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:20,336 WARN L233 SmtUtils]: Spent 15.35s on a formula simplification. DAG size of input: 576 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:38:09,623 WARN L233 SmtUtils]: Spent 41.48s on a formula simplification. DAG size of input: 762 DAG size of output: 508 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:38:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:38:09,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:38:09,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724723155] [2022-12-13 21:38:09,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724723155] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:38:09,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:38:09,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-12-13 21:38:09,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730806262] [2022-12-13 21:38:09,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:38:09,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:38:09,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:38:09,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:38:09,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=131, Unknown=2, NotChecked=0, Total=182 [2022-12-13 21:38:09,886 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 21:38:10,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:38:10,457 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-12-13 21:38:10,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:38:10,457 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 17 [2022-12-13 21:38:10,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:38:10,458 INFO L225 Difference]: With dead ends: 25 [2022-12-13 21:38:10,458 INFO L226 Difference]: Without dead ends: 23 [2022-12-13 21:38:10,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 62.9s TimeCoverageRelationStatistics Valid=97, Invalid=243, Unknown=2, NotChecked=0, Total=342 [2022-12-13 21:38:10,459 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:38:10,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 12 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:38:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-13 21:38:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-12-13 21:38:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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 21:38:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-12-13 21:38:10,463 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2022-12-13 21:38:10,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:38:10,463 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-12-13 21:38:10,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 21:38:10,463 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-12-13 21:38:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 21:38:10,464 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:38:10,464 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2022-12-13 21:38:10,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 21:38:10,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:38:10,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:38:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:38:10,666 INFO L85 PathProgramCache]: Analyzing trace with hash -826954269, now seen corresponding path program 5 times [2022-12-13 21:38:10,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:38:10,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961641134] [2022-12-13 21:38:10,671 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:38:10,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:38:10,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:38:10,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:38:10,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 21:38:11,158 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-13 21:38:11,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:38:11,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 459 conjunts are in the unsatisfiable core [2022-12-13 21:38:11,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:38:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:38:14,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:38:36,927 WARN L233 SmtUtils]: Spent 9.17s on a formula simplification. DAG size of input: 495 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:39:00,301 WARN L233 SmtUtils]: Spent 9.22s on a formula simplification. DAG size of input: 390 DAG size of output: 295 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:39:34,325 WARN L233 SmtUtils]: Spent 24.67s on a formula simplification. DAG size of input: 652 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:40:28,390 WARN L233 SmtUtils]: Spent 19.44s on a formula simplification. DAG size of input: 673 DAG size of output: 490 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:40:45,714 WARN L233 SmtUtils]: Spent 9.33s on a formula simplification. DAG size of input: 499 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:40:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:45,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:45,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961641134] [2022-12-13 21:40:45,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961641134] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:40:45,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:40:45,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2022-12-13 21:40:45,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581283570] [2022-12-13 21:40:45,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:40:45,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 21:40:45,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:45,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 21:40:45,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1001, Unknown=22, NotChecked=0, Total=1190 [2022-12-13 21:40:45,739 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 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 21:40:48,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:40:59,596 WARN L233 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 914 DAG size of output: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:40:59,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:59,609 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-12-13 21:40:59,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:40:59,610 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 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 20 [2022-12-13 21:40:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:59,610 INFO L225 Difference]: With dead ends: 28 [2022-12-13 21:40:59,610 INFO L226 Difference]: Without dead ends: 26 [2022-12-13 21:40:59,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 153.6s TimeCoverageRelationStatistics Valid=250, Invalid=1367, Unknown=23, NotChecked=0, Total=1640 [2022-12-13 21:40:59,611 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 47 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:59,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 58 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 184 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 21:40:59,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-13 21:40:59,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-12-13 21:40:59,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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 21:40:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-12-13 21:40:59,617 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2022-12-13 21:40:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:59,618 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-12-13 21:40:59,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 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 21:40:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-12-13 21:40:59,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 21:40:59,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:59,618 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-12-13 21:40:59,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 21:40:59,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:59,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:40:59,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:59,821 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 6 times [2022-12-13 21:40:59,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:59,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274377905] [2022-12-13 21:40:59,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:40:59,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:59,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:59,826 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:59,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f255820-dd37-459e-b351-f030bf61ba2f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 21:41:00,411 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-12-13 21:41:00,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:41:00,454 WARN L261 TraceCheckSpWp]: Trace formula consists of 2192 conjuncts, 1135 conjunts are in the unsatisfiable core [2022-12-13 21:41:00,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:41:26,528 WARN L233 SmtUtils]: Spent 24.99s on a formula simplification. DAG size of input: 217 DAG size of output: 194 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:41:44,891 WARN L233 SmtUtils]: Spent 18.17s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:42:02,366 WARN L233 SmtUtils]: Spent 17.28s on a formula simplification that was a NOOP. DAG size: 208 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:49:15,751 WARN L233 SmtUtils]: Spent 6.99m on a formula simplification. DAG size of input: 742 DAG size of output: 722 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)