./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS --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 30c8d3298019488dcd7196bee2bc8b40464790a0108d12e9fe9926ac2a94dbfd --- 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-4e7fbc6 [2022-11-23 02:43:55,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:43:55,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:43:55,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:43:55,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:43:55,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:43:55,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:43:55,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:43:55,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:43:55,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:43:55,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:43:55,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:43:55,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:43:55,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:43:55,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:43:55,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:43:55,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:43:55,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:43:55,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:43:55,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:43:55,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:43:55,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:43:55,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:43:55,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:43:55,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:43:55,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:43:55,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:43:55,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:43:55,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:43:55,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:43:55,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:43:55,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:43:55,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:43:55,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:43:55,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:43:55,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:43:55,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:43:55,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:43:55,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:43:55,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:43:55,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:43:55,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-23 02:43:55,803 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:43:55,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:43:55,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:43:55,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:43:55,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:43:55,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:43:55,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:43:55,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:43:55,808 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:43:55,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:43:55,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:43:55,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:43:55,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:43:55,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:43:55,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:43:55,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:43:55,811 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:43:55,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:43:55,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:43:55,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:43:55,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:43:55,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:43:55,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:43:55,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:43:55,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:43:55,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:43:55,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:43:55,815 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:43:55,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:43:55,815 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:43:55,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:43:55,816 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_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30c8d3298019488dcd7196bee2bc8b40464790a0108d12e9fe9926ac2a94dbfd [2022-11-23 02:43:56,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:43:56,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:43:56,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:43:56,263 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:43:56,264 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:43:56,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c [2022-11-23 02:43:59,658 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:43:59,992 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:43:59,993 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c [2022-11-23 02:44:00,006 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/data/588aa2286/a22aabcc28574b7b988cb766dfb47421/FLAG9fbed1313 [2022-11-23 02:44:00,047 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/data/588aa2286/a22aabcc28574b7b988cb766dfb47421 [2022-11-23 02:44:00,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:44:00,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:44:00,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:44:00,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:44:00,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:44:00,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff63b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00, skipping insertion in model container [2022-11-23 02:44:00,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:44:00,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:44:00,409 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_ae14feb1-2065-4853-8f7c-d52547844469/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c[1107,1120] [2022-11-23 02:44:00,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:44:00,617 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:44:00,630 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_ae14feb1-2065-4853-8f7c-d52547844469/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c[1107,1120] [2022-11-23 02:44:00,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:44:00,753 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:44:00,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00 WrapperNode [2022-11-23 02:44:00,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:44:00,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:44:00,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:44:00,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:44:00,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,875 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 631 [2022-11-23 02:44:00,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:44:00,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:44:00,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:44:00,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:44:00,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,943 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:44:00,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:44:00,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:44:00,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:44:00,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00" (1/1) ... [2022-11-23 02:44:00,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:44:01,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:44:01,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:44:01,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:44:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:44:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:44:01,437 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:44:01,440 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:44:09,133 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:44:09,154 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:44:09,155 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 02:44:09,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:09 BoogieIcfgContainer [2022-11-23 02:44:09,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:44:09,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:44:09,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:44:09,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:44:09,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:44:00" (1/3) ... [2022-11-23 02:44:09,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4b37a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:09, skipping insertion in model container [2022-11-23 02:44:09,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:00" (2/3) ... [2022-11-23 02:44:09,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4b37a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:09, skipping insertion in model container [2022-11-23 02:44:09,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:09" (3/3) ... [2022-11-23 02:44:09,168 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2001.c [2022-11-23 02:44:09,188 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:44:09,189 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:44:09,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:44:09,249 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;@1ae979d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:44:09,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:44:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:09,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 02:44:09,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:44:09,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 02:44:09,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:44:09,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:44:09,274 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 02:44:09,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:44:09,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8007222] [2022-11-23 02:44:09,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:44:09,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:44:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:44:09,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:44:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:44:09,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:44:09,652 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:44:09,653 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 02:44:09,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:44:09,662 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 02:44:09,667 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:44:09,701 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 02:44:09,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:44:09 BoogieIcfgContainer [2022-11-23 02:44:09,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:44:09,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:44:09,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:44:09,718 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:44:09,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:09" (3/4) ... [2022-11-23 02:44:09,727 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 02:44:09,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:44:09,730 INFO L158 Benchmark]: Toolchain (without parser) took 9677.34ms. Allocated memory was 184.5MB in the beginning and 394.3MB in the end (delta: 209.7MB). Free memory was 154.9MB in the beginning and 320.4MB in the end (delta: -165.5MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2022-11-23 02:44:09,731 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory was 100.3MB in the beginning and 100.2MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:44:09,732 INFO L158 Benchmark]: CACSL2BoogieTranslator took 700.57ms. Allocated memory is still 184.5MB. Free memory was 154.7MB in the beginning and 133.0MB in the end (delta: 21.7MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2022-11-23 02:44:09,734 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.70ms. Allocated memory is still 184.5MB. Free memory was 133.0MB in the beginning and 125.4MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 02:44:09,741 INFO L158 Benchmark]: Boogie Preprocessor took 80.99ms. Allocated memory is still 184.5MB. Free memory was 125.4MB in the beginning and 121.5MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 02:44:09,742 INFO L158 Benchmark]: RCFGBuilder took 8199.63ms. Allocated memory was 184.5MB in the beginning and 394.3MB in the end (delta: 209.7MB). Free memory was 121.5MB in the beginning and 344.5MB in the end (delta: -223.0MB). Peak memory consumption was 212.9MB. Max. memory is 16.1GB. [2022-11-23 02:44:09,743 INFO L158 Benchmark]: TraceAbstraction took 554.84ms. Allocated memory is still 394.3MB. Free memory was 344.5MB in the beginning and 321.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-23 02:44:09,743 INFO L158 Benchmark]: Witness Printer took 10.66ms. Allocated memory is still 394.3MB. Free memory was 321.5MB in the beginning and 320.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:44:09,747 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 125.8MB. Free memory was 100.3MB in the beginning and 100.2MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 700.57ms. Allocated memory is still 184.5MB. Free memory was 154.7MB in the beginning and 133.0MB in the end (delta: 21.7MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.70ms. Allocated memory is still 184.5MB. Free memory was 133.0MB in the beginning and 125.4MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.99ms. Allocated memory is still 184.5MB. Free memory was 125.4MB in the beginning and 121.5MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 8199.63ms. Allocated memory was 184.5MB in the beginning and 394.3MB in the end (delta: 209.7MB). Free memory was 121.5MB in the beginning and 344.5MB in the end (delta: -223.0MB). Peak memory consumption was 212.9MB. Max. memory is 16.1GB. * TraceAbstraction took 554.84ms. Allocated memory is still 394.3MB. Free memory was 344.5MB in the beginning and 321.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 10.66ms. Allocated memory is still 394.3MB. Free memory was 321.5MB in the beginning and 320.4MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 79, overapproximation of bitwiseAnd at line 84. 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_31 mask_SORT_31 = (SORT_31)-1 >> (sizeof(SORT_31) * 8 - 3); [L29] const SORT_31 msb_SORT_31 = (SORT_31)1 << (3 - 1); [L31] const SORT_1 var_3 = 0; [L32] const SORT_1 var_9 = 1; [L33] const SORT_31 var_37 = 0; [L34] const SORT_31 var_226 = 1; [L36] SORT_1 input_2; [L38] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L39] SORT_1 state_13 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L40] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L41] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L42] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L43] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L44] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_31 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_31; [L49] SORT_31 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_31; [L50] SORT_31 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_31; [L51] SORT_31 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_31; [L53] SORT_1 init_5_arg_1 = var_3; [L54] state_4 = init_5_arg_1 [L55] SORT_1 init_14_arg_1 = var_9; [L56] state_13 = init_14_arg_1 [L57] SORT_1 init_16_arg_1 = var_3; [L58] state_15 = init_16_arg_1 [L59] SORT_1 init_18_arg_1 = var_3; [L60] state_17 = init_18_arg_1 [L61] SORT_1 init_20_arg_1 = var_3; [L62] state_19 = init_20_arg_1 [L63] SORT_1 init_22_arg_1 = var_3; [L64] state_21 = init_22_arg_1 [L65] SORT_1 init_24_arg_1 = var_3; [L66] state_23 = init_24_arg_1 [L67] SORT_1 init_26_arg_1 = var_3; [L68] state_25 = init_26_arg_1 [L69] SORT_1 init_28_arg_1 = var_3; [L70] state_27 = init_28_arg_1 [L71] SORT_1 init_30_arg_1 = var_9; [L72] 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=0, init_28_arg_1=0, init_30_arg_1=1, init_5_arg_1=0, mask_SORT_1=1, mask_SORT_31=7, msb_SORT_1=1, msb_SORT_31=4, state_13=1, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=1, state_32=0, state_33=0, state_34=0, state_35=0, state_4=0, var_226=1, var_3=0, var_37=0, var_9=1] [L75] input_2 = __VERIFIER_nondet_uchar() [L78] SORT_1 var_6_arg_0 = state_4; [L79] SORT_1 var_6 = ~var_6_arg_0; [L80] SORT_1 var_10_arg_0 = var_6; [L81] SORT_1 var_10 = ~var_10_arg_0; [L82] SORT_1 var_11_arg_0 = var_9; [L83] SORT_1 var_11_arg_1 = var_10; [L84] SORT_1 var_11 = var_11_arg_0 & var_11_arg_1; [L85] var_11 = var_11 & mask_SORT_1 [L86] SORT_1 bad_12_arg_0 = var_11; [L87] CALL __VERIFIER_assert(!(bad_12_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 02:44:09,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/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_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS --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 30c8d3298019488dcd7196bee2bc8b40464790a0108d12e9fe9926ac2a94dbfd --- 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-4e7fbc6 [2022-11-23 02:44:12,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:44:12,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:44:12,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:44:12,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:44:12,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:44:12,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:44:12,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:44:12,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:44:12,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:44:12,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:44:12,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:44:12,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:44:12,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:44:12,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:44:12,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:44:12,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:44:12,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:44:12,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:44:12,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:44:12,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:44:12,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:44:12,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:44:12,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:44:12,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:44:12,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:44:12,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:44:12,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:44:12,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:44:12,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:44:12,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:44:12,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:44:12,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:44:12,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:44:12,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:44:12,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:44:12,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:44:12,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:44:12,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:44:12,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:44:12,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:44:12,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-23 02:44:12,774 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:44:12,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:44:12,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:44:12,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:44:12,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:44:12,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:44:12,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:44:12,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:44:12,781 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:44:12,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:44:12,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:44:12,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:44:12,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:44:12,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:44:12,784 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 02:44:12,784 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 02:44:12,784 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 02:44:12,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:44:12,785 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:44:12,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:44:12,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:44:12,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:44:12,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:44:12,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:44:12,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:44:12,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:44:12,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:44:12,787 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 02:44:12,787 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 02:44:12,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:44:12,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:44:12,788 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:44:12,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:44:12,789 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 02:44:12,789 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_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30c8d3298019488dcd7196bee2bc8b40464790a0108d12e9fe9926ac2a94dbfd [2022-11-23 02:44:13,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:44:13,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:44:13,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:44:13,330 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:44:13,331 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:44:13,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c [2022-11-23 02:44:16,648 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:44:17,039 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:44:17,049 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c [2022-11-23 02:44:17,067 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/data/b2eeb2860/e33f734faa0940a79e04ccac5364b810/FLAG52853b05e [2022-11-23 02:44:17,092 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/data/b2eeb2860/e33f734faa0940a79e04ccac5364b810 [2022-11-23 02:44:17,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:44:17,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:44:17,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:44:17,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:44:17,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:44:17,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:17,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b189c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17, skipping insertion in model container [2022-11-23 02:44:17,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:17,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:44:17,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:44:17,442 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_ae14feb1-2065-4853-8f7c-d52547844469/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c[1107,1120] [2022-11-23 02:44:17,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:44:17,720 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:44:17,742 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_ae14feb1-2065-4853-8f7c-d52547844469/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c[1107,1120] [2022-11-23 02:44:17,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:44:17,936 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:44:17,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17 WrapperNode [2022-11-23 02:44:17,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:44:17,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:44:17,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:44:17,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:44:17,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:17,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:18,019 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 631 [2022-11-23 02:44:18,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:44:18,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:44:18,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:44:18,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:44:18,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:18,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:18,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:18,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:18,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:18,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:18,066 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:18,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:18,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:44:18,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:44:18,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:44:18,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:44:18,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17" (1/1) ... [2022-11-23 02:44:18,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:44:18,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:44:18,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:44:18,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:44:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:44:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:44:18,498 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:44:18,500 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:44:19,540 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:44:19,553 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:44:19,555 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 02:44:19,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:19 BoogieIcfgContainer [2022-11-23 02:44:19,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:44:19,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:44:19,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:44:19,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:44:19,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:44:17" (1/3) ... [2022-11-23 02:44:19,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d678435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:19, skipping insertion in model container [2022-11-23 02:44:19,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:17" (2/3) ... [2022-11-23 02:44:19,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d678435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:19, skipping insertion in model container [2022-11-23 02:44:19,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:19" (3/3) ... [2022-11-23 02:44:19,590 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2001.c [2022-11-23 02:44:19,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:44:19,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:44:19,682 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:44:19,691 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;@1451b662, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:44:19,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:44:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:19,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 02:44:19,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:44:19,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 02:44:19,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:44:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:44:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 02:44:19,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:44:19,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735092715] [2022-11-23 02:44:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:44:19,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:44:19,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:44:19,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:44:19,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 02:44:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:19,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 02:44:19,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:44:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:44:20,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:44:20,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:44:20,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735092715] [2022-11-23 02:44:20,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735092715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:44:20,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:44:20,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:44:20,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909173252] [2022-11-23 02:44:20,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:44:20,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:44:20,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:44:20,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:44:20,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:44:20,183 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:20,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:44:20,317 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 02:44:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:44:20,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 02:44:20,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:44:20,331 INFO L225 Difference]: With dead ends: 20 [2022-11-23 02:44:20,331 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 02:44:20,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:44:20,339 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:44:20,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:44:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 02:44:20,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 02:44:20,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:20,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 02:44:20,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 02:44:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:44:20,380 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 02:44:20,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 02:44:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 02:44:20,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:44:20,381 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 02:44:20,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:44:20,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:44:20,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:44:20,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:44:20,595 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 02:44:20,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:44:20,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938287627] [2022-11-23 02:44:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:44:20,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:44:20,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:44:20,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:44:20,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 02:44:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:21,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 02:44:21,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:44:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:44:21,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:44:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:44:21,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:44:21,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938287627] [2022-11-23 02:44:21,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938287627] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:44:21,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:44:21,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-23 02:44:21,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540045289] [2022-11-23 02:44:21,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:44:21,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:44:21,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:44:21,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:44:21,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:44:21,611 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:21,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:44:21,803 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-23 02:44:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:44:21,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 02:44:21,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:44:21,804 INFO L225 Difference]: With dead ends: 16 [2022-11-23 02:44:21,804 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 02:44:21,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:44:21,806 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:44:21,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 15 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:44:21,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 02:44:21,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-23 02:44:21,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:21,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-23 02:44:21,812 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-23 02:44:21,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:44:21,813 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-23 02:44:21,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:21,813 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-23 02:44:21,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 02:44:21,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:44:21,814 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 02:44:21,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:44:22,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:44:22,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:44:22,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:44:22,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-23 02:44:22,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:44:22,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810319140] [2022-11-23 02:44:22,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:44:22,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:44:22,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:44:22,034 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:44:22,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 02:44:22,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:44:22,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:44:22,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-23 02:44:22,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:44:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:44:23,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:44:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:44:26,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:44:26,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810319140] [2022-11-23 02:44:26,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810319140] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:44:26,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:44:26,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-23 02:44:26,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575329154] [2022-11-23 02:44:26,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:44:26,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:44:26,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:44:26,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:44:26,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:44:26,035 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:26,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:44:26,526 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-23 02:44:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:44:26,527 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 02:44:26,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:44:26,528 INFO L225 Difference]: With dead ends: 19 [2022-11-23 02:44:26,528 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 02:44:26,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:44:26,530 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:44:26,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 02:44:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 02:44:26,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-23 02:44:26,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:26,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 02:44:26,537 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-23 02:44:26,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:44:26,538 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 02:44:26,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:26,538 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 02:44:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 02:44:26,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:44:26,539 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-23 02:44:26,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:44:26,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:44:26,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:44:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:44:26,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-23 02:44:26,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:44:26,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512214887] [2022-11-23 02:44:26,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:44:26,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:44:26,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:44:26,766 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:44:26,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 02:44:27,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 02:44:27,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:44:27,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-23 02:44:27,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:44:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:44:56,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:45:12,868 WARN L233 SmtUtils]: Spent 8.84s on a formula simplification. DAG size of input: 445 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:45:34,103 WARN L233 SmtUtils]: Spent 13.43s on a formula simplification that was a NOOP. DAG size: 646 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:45:35,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:45:35,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:45:35,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512214887] [2022-11-23 02:45:35,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512214887] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:45:35,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:45:35,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-23 02:45:35,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838624664] [2022-11-23 02:45:35,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:45:35,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 02:45:35,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:45:35,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 02:45:35,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=195, Unknown=5, NotChecked=0, Total=240 [2022-11-23 02:45:35,576 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) [2022-11-23 02:45:49,306 WARN L233 SmtUtils]: Spent 12.75s on a formula simplification. DAG size of input: 591 DAG size of output: 390 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:46:03,509 WARN L233 SmtUtils]: Spent 10.48s on a formula simplification. DAG size of input: 598 DAG size of output: 392 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:46:05,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:46:06,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 02:46:08,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:46:10,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:46:19,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 02:46:22,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 02:46:24,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 02:46:26,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 02:46:36,903 WARN L233 SmtUtils]: Spent 9.02s on a formula simplification. DAG size of input: 562 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:46:43,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:46:44,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 02:46:53,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:46:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:46:53,559 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-23 02:46:53,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:46:53,564 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 [2022-11-23 02:46:53,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:46:53,564 INFO L225 Difference]: With dead ends: 22 [2022-11-23 02:46:53,564 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 02:46:53,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 114.8s TimeCoverageRelationStatistics Valid=109, Invalid=344, Unknown=9, NotChecked=0, Total=462 [2022-11-23 02:46:53,566 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:46:53,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 40 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 9 Unknown, 0 Unchecked, 23.4s Time] [2022-11-23 02:46:53,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 02:46:53,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-23 02:46:53,578 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) [2022-11-23 02:46:53,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-23 02:46:53,579 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-23 02:46:53,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:46:53,580 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-23 02:46:53,580 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) [2022-11-23 02:46:53,580 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-23 02:46:53,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 02:46:53,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:46:53,581 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-23 02:46:53,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 02:46:53,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:46:53,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:46:53,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:46:53,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-23 02:46:53,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:46:53,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875980378] [2022-11-23 02:46:53,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:46:53,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:46:53,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:46:53,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:46:53,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:46:54,556 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:46:54,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:46:54,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 2260 conjuncts, 407 conjunts are in the unsatisfiable core [2022-11-23 02:46:54,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:46:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:46:58,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:49:26,163 WARN L233 SmtUtils]: Spent 2.20m on a formula simplification. DAG size of input: 986 DAG size of output: 488 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:51:14,074 WARN L233 SmtUtils]: Spent 1.57m on a formula simplification. DAG size of input: 1006 DAG size of output: 790 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:51:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:51:14,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:51:14,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875980378] [2022-11-23 02:51:14,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875980378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:51:14,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:51:14,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-23 02:51:14,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677261872] [2022-11-23 02:51:14,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:51:14,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 02:51:14,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:51:14,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 02:51:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=131, Unknown=2, NotChecked=0, Total=182 [2022-11-23 02:51:14,634 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) [2022-11-23 02:51:16,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:51:16,005 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-11-23 02:51:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:51:16,011 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 [2022-11-23 02:51:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:51:16,014 INFO L225 Difference]: With dead ends: 25 [2022-11-23 02:51:16,014 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 02:51:16,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 236.8s TimeCoverageRelationStatistics Valid=97, Invalid=243, Unknown=2, NotChecked=0, Total=342 [2022-11-23 02:51:16,016 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 41 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 02:51:16,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 12 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 02:51:16,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 02:51:16,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-23 02:51:16,038 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) [2022-11-23 02:51:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-23 02:51:16,039 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2022-11-23 02:51:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:51:16,039 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-23 02:51:16,040 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) [2022-11-23 02:51:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-23 02:51:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 02:51:16,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:51:16,041 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2022-11-23 02:51:16,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 02:51:16,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:51:16,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:51:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:51:16,256 INFO L85 PathProgramCache]: Analyzing trace with hash -826954269, now seen corresponding path program 5 times [2022-11-23 02:51:16,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:51:16,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531147497] [2022-11-23 02:51:16,259 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:51:16,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:51:16,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:51:16,261 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:51:16,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:51:17,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-23 02:51:17,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:51:17,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 2813 conjuncts, 485 conjunts are in the unsatisfiable core [2022-11-23 02:51:17,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:52:15,031 WARN L233 SmtUtils]: Spent 43.18s on a formula simplification. DAG size of input: 343 DAG size of output: 319 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:52:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:52:40,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:53:08,562 WARN L233 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 616 DAG size of output: 499 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:54:52,042 WARN L233 SmtUtils]: Spent 1.12m on a formula simplification. DAG size of input: 1059 DAG size of output: 849 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:55:42,670 WARN L233 SmtUtils]: Spent 46.42s on a formula simplification. DAG size of input: 845 DAG size of output: 835 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:55:55,136 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 836 DAG size of output: 682 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:56:29,464 WARN L233 SmtUtils]: Spent 17.94s on a formula simplification. DAG size of input: 1201 DAG size of output: 822 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:56:45,063 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 831 DAG size of output: 668 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:56:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:56:45,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:56:45,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531147497] [2022-11-23 02:56:45,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531147497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:56:45,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:56:45,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-23 02:56:45,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106241028] [2022-11-23 02:56:45,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:56:45,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 02:56:45,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:56:45,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 02:56:45,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=842, Unknown=16, NotChecked=0, Total=992 [2022-11-23 02:56:45,162 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 32 states, 32 states have (on average 1.1875) internal successors, (38), 32 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) [2022-11-23 02:56:49,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:56:51,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:56:59,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:57:02,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:57:35,849 WARN L233 SmtUtils]: Spent 29.01s on a formula simplification. DAG size of input: 463 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:58:14,152 WARN L233 SmtUtils]: Spent 29.60s on a formula simplification. DAG size of input: 411 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:58:16,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:58:18,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:58:50,735 WARN L233 SmtUtils]: Spent 13.95s on a formula simplification. DAG size of input: 1453 DAG size of output: 875 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:58:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:58:50,741 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-11-23 02:58:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:58:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 32 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 [2022-11-23 02:58:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:58:50,742 INFO L225 Difference]: With dead ends: 28 [2022-11-23 02:58:50,742 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 02:58:50,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 376.2s TimeCoverageRelationStatistics Valid=292, Invalid=1402, Unknown=28, NotChecked=0, Total=1722 [2022-11-23 02:58:50,744 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 71 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 22 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:58:50,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 52 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 130 Invalid, 6 Unknown, 0 Unchecked, 14.5s Time] [2022-11-23 02:58:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 02:58:50,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-23 02:58:50,764 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) [2022-11-23 02:58:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-11-23 02:58:50,765 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2022-11-23 02:58:50,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:58:50,766 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-11-23 02:58:50,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 32 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) [2022-11-23 02:58:50,766 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-11-23 02:58:50,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 02:58:50,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:58:50,767 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-11-23 02:58:50,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:58:50,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:58:50,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:58:50,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:58:50,975 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 6 times [2022-11-23 02:58:50,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:58:50,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794606966] [2022-11-23 02:58:50,978 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 02:58:50,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:58:50,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:58:50,979 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:58:50,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae14feb1-2065-4853-8f7c-d52547844469/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:58:52,205 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-23 02:58:52,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:58:52,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 3366 conjuncts, 729 conjunts are in the unsatisfiable core [2022-11-23 02:58:52,284 INFO L286 TraceCheckSpWp]: Computing forward predicates...