./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc --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 1077ae0441cb571883fc0ff708e55c30eb3995f278f5fee5452eacbd87485486 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:01:21,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:01:21,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:01:21,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:01:21,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:01:21,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:01:21,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:01:21,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:01:21,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:01:21,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:01:21,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:01:21,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:01:21,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:01:21,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:01:21,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:01:21,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:01:21,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:01:21,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:01:21,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:01:21,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:01:21,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:01:21,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:01:21,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:01:21,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:01:21,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:01:21,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:01:21,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:01:21,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:01:21,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:01:21,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:01:21,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:01:21,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:01:21,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:01:21,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:01:21,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:01:21,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:01:21,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:01:21,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:01:21,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:01:21,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:01:21,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:01:21,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:01:21,954 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:01:21,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:01:21,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:01:21,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:01:21,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:01:21,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:01:21,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:01:21,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:01:21,957 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:01:21,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:01:21,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:01:21,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:01:21,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:01:21,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:01:21,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:01:21,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:01:21,959 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:01:21,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:01:21,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:01:21,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:01:21,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:01:21,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:21,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:01:21,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:01:21,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:01:21,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:01:21,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:01:21,962 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:01:21,963 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:01:21,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:01:21,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1077ae0441cb571883fc0ff708e55c30eb3995f278f5fee5452eacbd87485486 [2022-11-02 21:01:22,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:01:22,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:01:22,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:01:22,339 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:01:22,340 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:01:22,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2022-11-02 21:01:22,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/data/aa7a28928/0f93821a08f041eb9db96d2889c67cbf/FLAGc41a66925 [2022-11-02 21:01:23,131 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:01:23,131 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2022-11-02 21:01:23,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/data/aa7a28928/0f93821a08f041eb9db96d2889c67cbf/FLAGc41a66925 [2022-11-02 21:01:23,414 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/data/aa7a28928/0f93821a08f041eb9db96d2889c67cbf [2022-11-02 21:01:23,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:01:23,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:01:23,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:23,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:01:23,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:01:23,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:23" (1/1) ... [2022-11-02 21:01:23,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f85d1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:23, skipping insertion in model container [2022-11-02 21:01:23,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:23" (1/1) ... [2022-11-02 21:01:23,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:01:23,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:01:23,816 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1107,1120] [2022-11-02 21:01:24,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:24,039 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:01:24,050 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1107,1120] [2022-11-02 21:01:24,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:24,150 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:01:24,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24 WrapperNode [2022-11-02 21:01:24,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:24,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:24,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:01:24,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:01:24,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24" (1/1) ... [2022-11-02 21:01:24,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24" (1/1) ... [2022-11-02 21:01:24,320 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 751 [2022-11-02 21:01:24,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:24,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:01:24,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:01:24,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:01:24,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24" (1/1) ... [2022-11-02 21:01:24,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24" (1/1) ... [2022-11-02 21:01:24,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24" (1/1) ... [2022-11-02 21:01:24,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24" (1/1) ... [2022-11-02 21:01:24,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24" (1/1) ... [2022-11-02 21:01:24,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24" (1/1) ... [2022-11-02 21:01:24,406 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24" (1/1) ... [2022-11-02 21:01:24,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24" (1/1) ... [2022-11-02 21:01:24,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:01:24,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:01:24,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:01:24,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:01:24,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24" (1/1) ... [2022-11-02 21:01:24,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:24,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:24,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:01:24,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:01:24,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:01:24,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:01:24,821 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:01:24,823 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:01:32,922 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:01:32,930 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:01:32,930 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:01:32,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:32 BoogieIcfgContainer [2022-11-02 21:01:32,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:01:32,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:01:32,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:01:32,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:01:32,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:01:23" (1/3) ... [2022-11-02 21:01:32,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bc0d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:32, skipping insertion in model container [2022-11-02 21:01:32,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:24" (2/3) ... [2022-11-02 21:01:32,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bc0d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:32, skipping insertion in model container [2022-11-02 21:01:32,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:32" (3/3) ... [2022-11-02 21:01:32,943 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_state_machine.c [2022-11-02 21:01:32,963 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:01:32,963 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:01:33,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:01:33,046 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;@68c7b49b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:01:33,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:01:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 44 states have internal predecessors, (64), 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) [2022-11-02 21:01:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:01:33,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:33,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:01:33,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:33,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:33,070 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:01:33,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:33,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461703495] [2022-11-02 21:01:33,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:33,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:01:33,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:01:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:01:33,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:01:33,372 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:01:33,373 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:01:33,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:01:33,385 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 21:01:33,390 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:01:33,415 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:01:33,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:01:33 BoogieIcfgContainer [2022-11-02 21:01:33,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:01:33,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:01:33,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:01:33,431 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:01:33,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:32" (3/4) ... [2022-11-02 21:01:33,436 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:01:33,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:01:33,439 INFO L158 Benchmark]: Toolchain (without parser) took 10013.14ms. Allocated memory was 111.1MB in the beginning and 381.7MB in the end (delta: 270.5MB). Free memory was 77.6MB in the beginning and 194.3MB in the end (delta: -116.7MB). Peak memory consumption was 151.9MB. Max. memory is 16.1GB. [2022-11-02 21:01:33,439 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 77.6MB. Free memory was 36.5MB in the beginning and 36.4MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:01:33,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 721.40ms. Allocated memory is still 111.1MB. Free memory was 77.3MB in the beginning and 70.4MB in the end (delta: 7.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:01:33,442 INFO L158 Benchmark]: Boogie Procedure Inliner took 168.16ms. Allocated memory is still 111.1MB. Free memory was 70.4MB in the beginning and 57.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 21:01:33,447 INFO L158 Benchmark]: Boogie Preprocessor took 106.35ms. Allocated memory is still 111.1MB. Free memory was 57.3MB in the beginning and 50.4MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:01:33,448 INFO L158 Benchmark]: RCFGBuilder took 8504.09ms. Allocated memory was 111.1MB in the beginning and 381.7MB in the end (delta: 270.5MB). Free memory was 50.4MB in the beginning and 219.5MB in the end (delta: -169.1MB). Peak memory consumption was 207.5MB. Max. memory is 16.1GB. [2022-11-02 21:01:33,450 INFO L158 Benchmark]: TraceAbstraction took 493.92ms. Allocated memory is still 381.7MB. Free memory was 218.4MB in the beginning and 194.3MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-02 21:01:33,450 INFO L158 Benchmark]: Witness Printer took 5.51ms. Allocated memory is still 381.7MB. Free memory is still 194.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:01:33,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 77.6MB. Free memory was 36.5MB in the beginning and 36.4MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 721.40ms. Allocated memory is still 111.1MB. Free memory was 77.3MB in the beginning and 70.4MB in the end (delta: 7.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 168.16ms. Allocated memory is still 111.1MB. Free memory was 70.4MB in the beginning and 57.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 106.35ms. Allocated memory is still 111.1MB. Free memory was 57.3MB in the beginning and 50.4MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 8504.09ms. Allocated memory was 111.1MB in the beginning and 381.7MB in the end (delta: 270.5MB). Free memory was 50.4MB in the beginning and 219.5MB in the end (delta: -169.1MB). Peak memory consumption was 207.5MB. Max. memory is 16.1GB. * TraceAbstraction took 493.92ms. Allocated memory is still 381.7MB. Free memory was 218.4MB in the beginning and 194.3MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 5.51ms. Allocated memory is still 381.7MB. Free memory is still 194.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 84, overapproximation of bitwiseAnd at line 89. 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_32 mask_SORT_32 = (SORT_32)-1 >> (sizeof(SORT_32) * 8 - 32); [L29] const SORT_32 msb_SORT_32 = (SORT_32)1 << (32 - 1); [L31] const SORT_1 var_4 = 0; [L32] const SORT_1 var_10 = 1; [L33] const SORT_32 var_33 = 0; [L34] const SORT_32 var_39 = 2; [L35] const SORT_32 var_51 = 1; [L37] SORT_1 input_2; [L38] SORT_1 input_3; [L40] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L41] SORT_1 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L42] SORT_1 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L43] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L44] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_1 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] SORT_1 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L49] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L50] SORT_32 state_34 = __VERIFIER_nondet_uint() & mask_SORT_32; [L51] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L53] SORT_1 init_6_arg_1 = var_4; [L54] state_5 = init_6_arg_1 [L55] SORT_1 init_15_arg_1 = var_10; [L56] state_14 = init_15_arg_1 [L57] SORT_1 init_17_arg_1 = var_4; [L58] state_16 = init_17_arg_1 [L59] SORT_1 init_19_arg_1 = var_4; [L60] state_18 = init_19_arg_1 [L61] SORT_1 init_21_arg_1 = var_4; [L62] state_20 = init_21_arg_1 [L63] SORT_1 init_23_arg_1 = var_4; [L64] state_22 = init_23_arg_1 [L65] SORT_1 init_25_arg_1 = var_4; [L66] state_24 = init_25_arg_1 [L67] SORT_1 init_27_arg_1 = var_4; [L68] state_26 = init_27_arg_1 [L69] SORT_1 init_29_arg_1 = var_4; [L70] state_28 = init_29_arg_1 [L71] SORT_1 init_31_arg_1 = var_10; [L72] state_30 = init_31_arg_1 [L73] SORT_32 init_35_arg_1 = var_33; [L74] state_34 = init_35_arg_1 [L75] SORT_1 init_37_arg_1 = var_4; [L76] state_36 = init_37_arg_1 VAL [init_15_arg_1=1, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=1, init_35_arg_1=0, init_37_arg_1=0, init_6_arg_1=0, mask_SORT_1=1, mask_SORT_32=4294967295, msb_SORT_1=1, msb_SORT_32=2147483648, state_14=1, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=1, state_34=0, state_36=0, state_5=0, var_10=1, var_33=0, var_39=2, var_4=0, var_51=1] [L79] input_2 = __VERIFIER_nondet_uchar() [L80] input_3 = __VERIFIER_nondet_uchar() [L83] SORT_1 var_7_arg_0 = state_5; [L84] SORT_1 var_7 = ~var_7_arg_0; [L85] SORT_1 var_11_arg_0 = var_7; [L86] SORT_1 var_11 = ~var_11_arg_0; [L87] SORT_1 var_12_arg_0 = var_10; [L88] SORT_1 var_12_arg_1 = var_11; [L89] SORT_1 var_12 = var_12_arg_0 & var_12_arg_1; [L90] var_12 = var_12 & mask_SORT_1 [L91] SORT_1 bad_13_arg_0 = var_12; [L92] CALL __VERIFIER_assert(!(bad_13_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 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=45occurred 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 [2022-11-02 21:01:33,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/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_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc --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 1077ae0441cb571883fc0ff708e55c30eb3995f278f5fee5452eacbd87485486 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:01:35,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:01:35,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:01:35,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:01:35,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:01:35,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:01:35,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:01:35,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:01:35,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:01:35,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:01:35,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:01:35,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:01:35,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:01:35,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:01:35,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:01:35,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:01:35,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:01:35,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:01:35,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:01:35,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:01:35,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:01:35,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:01:35,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:01:35,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:01:35,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:01:35,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:01:35,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:01:35,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:01:36,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:01:36,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:01:36,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:01:36,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:01:36,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:01:36,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:01:36,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:01:36,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:01:36,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:01:36,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:01:36,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:01:36,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:01:36,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:01:36,011 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:01:36,056 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:01:36,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:01:36,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:01:36,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:01:36,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:01:36,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:01:36,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:01:36,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:01:36,061 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:01:36,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:01:36,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:01:36,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:01:36,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:01:36,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:01:36,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:01:36,064 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:01:36,064 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:01:36,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:01:36,065 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:01:36,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:01:36,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:01:36,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:01:36,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:01:36,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:36,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:01:36,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:01:36,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:01:36,068 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:01:36,068 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:01:36,068 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:01:36,069 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:01:36,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:01:36,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:01:36,069 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1077ae0441cb571883fc0ff708e55c30eb3995f278f5fee5452eacbd87485486 [2022-11-02 21:01:36,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:01:36,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:01:36,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:01:36,558 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:01:36,559 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:01:36,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2022-11-02 21:01:36,648 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/data/98fa12ff6/a010ffab0f8548c094d303df381f829f/FLAG70226acc4 [2022-11-02 21:01:37,363 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:01:37,363 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2022-11-02 21:01:37,386 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/data/98fa12ff6/a010ffab0f8548c094d303df381f829f/FLAG70226acc4 [2022-11-02 21:01:37,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/data/98fa12ff6/a010ffab0f8548c094d303df381f829f [2022-11-02 21:01:37,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:01:37,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:01:37,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:37,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:01:37,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:01:37,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:37" (1/1) ... [2022-11-02 21:01:37,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f22db82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:37, skipping insertion in model container [2022-11-02 21:01:37,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:37" (1/1) ... [2022-11-02 21:01:37,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:01:37,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:01:37,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1107,1120] [2022-11-02 21:01:38,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:38,043 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:01:38,058 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1107,1120] [2022-11-02 21:01:38,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:38,151 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:01:38,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38 WrapperNode [2022-11-02 21:01:38,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:38,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:38,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:01:38,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:01:38,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38" (1/1) ... [2022-11-02 21:01:38,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38" (1/1) ... [2022-11-02 21:01:38,265 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 751 [2022-11-02 21:01:38,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:38,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:01:38,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:01:38,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:01:38,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38" (1/1) ... [2022-11-02 21:01:38,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38" (1/1) ... [2022-11-02 21:01:38,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38" (1/1) ... [2022-11-02 21:01:38,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38" (1/1) ... [2022-11-02 21:01:38,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38" (1/1) ... [2022-11-02 21:01:38,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38" (1/1) ... [2022-11-02 21:01:38,340 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38" (1/1) ... [2022-11-02 21:01:38,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38" (1/1) ... [2022-11-02 21:01:38,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:01:38,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:01:38,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:01:38,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:01:38,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38" (1/1) ... [2022-11-02 21:01:38,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:38,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:38,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:01:38,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:01:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:01:38,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:01:38,806 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:01:38,812 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:01:39,665 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:01:39,672 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:01:39,673 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:01:39,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:39 BoogieIcfgContainer [2022-11-02 21:01:39,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:01:39,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:01:39,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:01:39,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:01:39,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:01:37" (1/3) ... [2022-11-02 21:01:39,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e983ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:39, skipping insertion in model container [2022-11-02 21:01:39,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:38" (2/3) ... [2022-11-02 21:01:39,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e983ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:39, skipping insertion in model container [2022-11-02 21:01:39,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:39" (3/3) ... [2022-11-02 21:01:39,689 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_state_machine.c [2022-11-02 21:01:39,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:01:39,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:01:39,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:01:39,790 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;@3befde32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:01:39,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:01:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 44 states have internal predecessors, (64), 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) [2022-11-02 21:01:39,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:01:39,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:39,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:01:39,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:39,812 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:01:39,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:39,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667780631] [2022-11-02 21:01:39,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:39,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:39,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:39,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:39,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:01:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:40,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:01:40,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:40,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:40,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:40,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667780631] [2022-11-02 21:01:40,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667780631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:40,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:40,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:40,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089690394] [2022-11-02 21:01:40,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:40,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:40,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:40,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:40,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:40,254 INFO L87 Difference]: Start difference. First operand has 45 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 44 states have internal predecessors, (64), 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) [2022-11-02 21:01:40,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:40,454 INFO L93 Difference]: Finished difference Result 122 states and 183 transitions. [2022-11-02 21:01:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:40,458 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 [2022-11-02 21:01:40,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:40,467 INFO L225 Difference]: With dead ends: 122 [2022-11-02 21:01:40,467 INFO L226 Difference]: Without dead ends: 79 [2022-11-02 21:01:40,470 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 [2022-11-02 21:01:40,484 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 106 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:40,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 155 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:40,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-02 21:01:40,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 43. [2022-11-02 21:01:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 42 states have internal predecessors, (60), 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) [2022-11-02 21:01:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 60 transitions. [2022-11-02 21:01:40,531 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 60 transitions. Word has length 5 [2022-11-02 21:01:40,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:40,532 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 60 transitions. [2022-11-02 21:01:40,532 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) [2022-11-02 21:01:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 60 transitions. [2022-11-02 21:01:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:01:40,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:40,533 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:40,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:40,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:40,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:40,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:40,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1917412477, now seen corresponding path program 1 times [2022-11-02 21:01:40,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:40,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156889643] [2022-11-02 21:01:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:40,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:40,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:40,744 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:40,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:01:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:41,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:01:41,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:41,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:41,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:41,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156889643] [2022-11-02 21:01:41,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156889643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:41,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:41,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:41,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877885411] [2022-11-02 21:01:41,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:41,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:41,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:41,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:41,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:41,363 INFO L87 Difference]: Start difference. First operand 43 states and 60 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:41,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:41,510 INFO L93 Difference]: Finished difference Result 124 states and 176 transitions. [2022-11-02 21:01:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:41,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2022-11-02 21:01:41,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:41,514 INFO L225 Difference]: With dead ends: 124 [2022-11-02 21:01:41,514 INFO L226 Difference]: Without dead ends: 85 [2022-11-02 21:01:41,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:41,516 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 102 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:41,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 150 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:41,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-02 21:01:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 47. [2022-11-02 21:01:41,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 states have internal predecessors, (65), 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) [2022-11-02 21:01:41,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 65 transitions. [2022-11-02 21:01:41,531 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 65 transitions. Word has length 42 [2022-11-02 21:01:41,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:41,531 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 65 transitions. [2022-11-02 21:01:41,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 65 transitions. [2022-11-02 21:01:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:01:41,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:41,533 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:41,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:41,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:41,734 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:41,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:41,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1073406975, now seen corresponding path program 1 times [2022-11-02 21:01:41,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:41,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336662139] [2022-11-02 21:01:41,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:41,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:41,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:41,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:41,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:01:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:42,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:01:42,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:42,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:42,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:42,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336662139] [2022-11-02 21:01:42,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336662139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:42,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:42,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:42,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041026685] [2022-11-02 21:01:42,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:42,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:42,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:42,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:42,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:42,245 INFO L87 Difference]: Start difference. First operand 47 states and 65 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:42,362 INFO L93 Difference]: Finished difference Result 138 states and 196 transitions. [2022-11-02 21:01:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:42,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2022-11-02 21:01:42,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:42,371 INFO L225 Difference]: With dead ends: 138 [2022-11-02 21:01:42,371 INFO L226 Difference]: Without dead ends: 99 [2022-11-02 21:01:42,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:42,372 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 87 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:42,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 163 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:42,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-02 21:01:42,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 61. [2022-11-02 21:01:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.4166666666666667) internal successors, (85), 60 states have internal predecessors, (85), 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) [2022-11-02 21:01:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 85 transitions. [2022-11-02 21:01:42,387 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 85 transitions. Word has length 42 [2022-11-02 21:01:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:42,387 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 85 transitions. [2022-11-02 21:01:42,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:42,388 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 85 transitions. [2022-11-02 21:01:42,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:01:42,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:42,394 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:42,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:42,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:42,607 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1496108801, now seen corresponding path program 1 times [2022-11-02 21:01:42,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:42,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764340542] [2022-11-02 21:01:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:42,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:42,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:42,612 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:42,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:01:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:01:43,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:43,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:43,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:43,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764340542] [2022-11-02 21:01:43,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764340542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:43,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:43,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:43,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027917372] [2022-11-02 21:01:43,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:43,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:43,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:43,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:43,205 INFO L87 Difference]: Start difference. First operand 61 states and 85 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:43,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:43,399 INFO L93 Difference]: Finished difference Result 155 states and 220 transitions. [2022-11-02 21:01:43,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:43,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2022-11-02 21:01:43,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:43,401 INFO L225 Difference]: With dead ends: 155 [2022-11-02 21:01:43,401 INFO L226 Difference]: Without dead ends: 116 [2022-11-02 21:01:43,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:43,402 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 106 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:43,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 178 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-02 21:01:43,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 63. [2022-11-02 21:01:43,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.403225806451613) internal successors, (87), 62 states have internal predecessors, (87), 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) [2022-11-02 21:01:43,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 87 transitions. [2022-11-02 21:01:43,415 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 87 transitions. Word has length 42 [2022-11-02 21:01:43,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:43,416 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 87 transitions. [2022-11-02 21:01:43,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:43,416 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 87 transitions. [2022-11-02 21:01:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:01:43,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:43,417 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:43,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:43,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:43,618 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:43,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1109914753, now seen corresponding path program 1 times [2022-11-02 21:01:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:43,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712849117] [2022-11-02 21:01:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:43,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:43,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:43,627 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:43,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:01:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:44,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:44,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:44,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:44,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712849117] [2022-11-02 21:01:44,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712849117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:44,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:44,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:44,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245079344] [2022-11-02 21:01:44,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:44,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:44,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:44,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:44,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:44,246 INFO L87 Difference]: Start difference. First operand 63 states and 87 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:44,439 INFO L93 Difference]: Finished difference Result 155 states and 219 transitions. [2022-11-02 21:01:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:44,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2022-11-02 21:01:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:44,442 INFO L225 Difference]: With dead ends: 155 [2022-11-02 21:01:44,442 INFO L226 Difference]: Without dead ends: 116 [2022-11-02 21:01:44,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:44,443 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 100 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:44,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 174 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-02 21:01:44,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 65. [2022-11-02 21:01:44,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.390625) internal successors, (89), 64 states have internal predecessors, (89), 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) [2022-11-02 21:01:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 89 transitions. [2022-11-02 21:01:44,452 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 89 transitions. Word has length 42 [2022-11-02 21:01:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:44,452 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 89 transitions. [2022-11-02 21:01:44,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2022-11-02 21:01:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:01:44,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:44,454 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:44,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:44,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:44,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:44,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:44,672 INFO L85 PathProgramCache]: Analyzing trace with hash -478433149, now seen corresponding path program 1 times [2022-11-02 21:01:44,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:44,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734554663] [2022-11-02 21:01:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:44,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:44,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:44,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:44,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:01:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:01:45,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:45,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:45,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:45,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734554663] [2022-11-02 21:01:45,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734554663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:45,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:45,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:45,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363368780] [2022-11-02 21:01:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:45,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:45,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:45,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:45,137 INFO L87 Difference]: Start difference. First operand 65 states and 89 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:45,255 INFO L93 Difference]: Finished difference Result 155 states and 218 transitions. [2022-11-02 21:01:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:45,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2022-11-02 21:01:45,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:45,256 INFO L225 Difference]: With dead ends: 155 [2022-11-02 21:01:45,256 INFO L226 Difference]: Without dead ends: 116 [2022-11-02 21:01:45,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:45,258 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 94 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:45,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 200 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:45,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-02 21:01:45,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 67. [2022-11-02 21:01:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.378787878787879) internal successors, (91), 66 states have internal predecessors, (91), 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) [2022-11-02 21:01:45,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2022-11-02 21:01:45,272 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 42 [2022-11-02 21:01:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:45,272 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2022-11-02 21:01:45,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2022-11-02 21:01:45,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:01:45,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:45,275 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:45,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-02 21:01:45,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:45,495 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:45,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:45,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1758296827, now seen corresponding path program 1 times [2022-11-02 21:01:45,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:45,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68065875] [2022-11-02 21:01:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:45,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:45,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:45,498 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:45,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:01:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:01:45,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:45,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:45,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:45,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68065875] [2022-11-02 21:01:45,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68065875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:45,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:45,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:45,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262722174] [2022-11-02 21:01:45,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:45,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:45,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:45,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:45,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:45,956 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:46,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:46,085 INFO L93 Difference]: Finished difference Result 155 states and 217 transitions. [2022-11-02 21:01:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:46,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2022-11-02 21:01:46,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:46,086 INFO L225 Difference]: With dead ends: 155 [2022-11-02 21:01:46,086 INFO L226 Difference]: Without dead ends: 116 [2022-11-02 21:01:46,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:46,088 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 88 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:46,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 199 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:46,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-02 21:01:46,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 69. [2022-11-02 21:01:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 68 states have internal predecessors, (93), 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) [2022-11-02 21:01:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2022-11-02 21:01:46,094 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 42 [2022-11-02 21:01:46,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:46,095 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2022-11-02 21:01:46,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:46,095 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2022-11-02 21:01:46,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:01:46,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:46,096 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:46,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:46,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:46,309 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:46,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1949864455, now seen corresponding path program 1 times [2022-11-02 21:01:46,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:46,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372923550] [2022-11-02 21:01:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:46,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:46,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:46,312 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:46,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:01:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:46,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:01:46,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:46,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:46,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:46,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372923550] [2022-11-02 21:01:46,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372923550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:46,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:46,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786149081] [2022-11-02 21:01:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:46,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:46,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:46,748 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:46,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:46,862 INFO L93 Difference]: Finished difference Result 155 states and 216 transitions. [2022-11-02 21:01:46,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:46,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2022-11-02 21:01:46,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:46,864 INFO L225 Difference]: With dead ends: 155 [2022-11-02 21:01:46,864 INFO L226 Difference]: Without dead ends: 116 [2022-11-02 21:01:46,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:46,865 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 72 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:46,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 198 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-02 21:01:46,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2022-11-02 21:01:46,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 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) [2022-11-02 21:01:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 101 transitions. [2022-11-02 21:01:46,871 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 101 transitions. Word has length 42 [2022-11-02 21:01:46,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:46,871 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 101 transitions. [2022-11-02 21:01:46,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 101 transitions. [2022-11-02 21:01:46,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:01:46,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:46,873 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:46,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:47,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:47,088 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash -570095479, now seen corresponding path program 1 times [2022-11-02 21:01:47,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:47,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158409322] [2022-11-02 21:01:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:47,089 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:47,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:47,090 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:47,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:01:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:47,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 21:01:47,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:47,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:48,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:48,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158409322] [2022-11-02 21:01:48,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158409322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:48,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:48,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 21:01:48,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138811120] [2022-11-02 21:01:48,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:48,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:01:48,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:48,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:01:48,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:01:48,049 INFO L87 Difference]: Start difference. First operand 75 states and 101 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 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) [2022-11-02 21:01:48,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:48,477 INFO L93 Difference]: Finished difference Result 152 states and 205 transitions. [2022-11-02 21:01:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:01:48,478 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 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 42 [2022-11-02 21:01:48,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:48,481 INFO L225 Difference]: With dead ends: 152 [2022-11-02 21:01:48,483 INFO L226 Difference]: Without dead ends: 150 [2022-11-02 21:01:48,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:01:48,484 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 514 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:48,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 621 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 92 Invalid, 0 Unknown, 129 Unchecked, 0.3s Time] [2022-11-02 21:01:48,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-02 21:01:48,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 110. [2022-11-02 21:01:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 109 states have internal predecessors, (145), 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) [2022-11-02 21:01:48,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 145 transitions. [2022-11-02 21:01:48,500 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 145 transitions. Word has length 42 [2022-11-02 21:01:48,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:48,501 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 145 transitions. [2022-11-02 21:01:48,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 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) [2022-11-02 21:01:48,501 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 145 transitions. [2022-11-02 21:01:48,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:01:48,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:48,502 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:48,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:48,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:48,703 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:48,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash 89436043, now seen corresponding path program 1 times [2022-11-02 21:01:48,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:48,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806906016] [2022-11-02 21:01:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:48,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:48,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:48,708 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:48,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:01:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:49,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:01:49,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:49,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:49,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:49,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806906016] [2022-11-02 21:01:49,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806906016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:49,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:49,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:49,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976156568] [2022-11-02 21:01:49,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:49,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:49,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:49,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:49,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:49,091 INFO L87 Difference]: Start difference. First operand 110 states and 145 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:49,174 INFO L93 Difference]: Finished difference Result 150 states and 202 transitions. [2022-11-02 21:01:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:49,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2022-11-02 21:01:49,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:49,175 INFO L225 Difference]: With dead ends: 150 [2022-11-02 21:01:49,175 INFO L226 Difference]: Without dead ends: 81 [2022-11-02 21:01:49,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:49,176 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 88 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:49,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 148 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:49,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-02 21:01:49,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2022-11-02 21:01:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 79 states have internal predecessors, (106), 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) [2022-11-02 21:01:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2022-11-02 21:01:49,182 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 42 [2022-11-02 21:01:49,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:49,182 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2022-11-02 21:01:49,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 21:01:49,183 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2022-11-02 21:01:49,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:01:49,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:49,184 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:49,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:49,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:49,399 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:49,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:49,399 INFO L85 PathProgramCache]: Analyzing trace with hash -631538813, now seen corresponding path program 1 times [2022-11-02 21:01:49,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:49,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335693293] [2022-11-02 21:01:49,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:49,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:49,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:49,402 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:49,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:01:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:49,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-02 21:01:49,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:51,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:51,590 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:51,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:51,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335693293] [2022-11-02 21:01:51,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335693293] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:51,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:51,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 21:01:51,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579448631] [2022-11-02 21:01:51,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:51,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:01:51,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:51,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:01:51,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:01:51,594 INFO L87 Difference]: Start difference. First operand 80 states and 106 transitions. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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) [2022-11-02 21:01:51,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:51,955 INFO L93 Difference]: Finished difference Result 140 states and 193 transitions. [2022-11-02 21:01:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:01:51,959 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 79 [2022-11-02 21:01:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:51,960 INFO L225 Difference]: With dead ends: 140 [2022-11-02 21:01:51,960 INFO L226 Difference]: Without dead ends: 101 [2022-11-02 21:01:51,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:01:51,961 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 94 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:51,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 332 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 69 Unchecked, 0.2s Time] [2022-11-02 21:01:51,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-02 21:01:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 84. [2022-11-02 21:01:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.3373493975903614) internal successors, (111), 83 states have internal predecessors, (111), 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) [2022-11-02 21:01:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 111 transitions. [2022-11-02 21:01:51,966 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 111 transitions. Word has length 79 [2022-11-02 21:01:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:51,966 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 111 transitions. [2022-11-02 21:01:51,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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) [2022-11-02 21:01:51,966 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 111 transitions. [2022-11-02 21:01:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:01:51,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:51,967 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:51,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:52,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:52,168 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:52,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:52,169 INFO L85 PathProgramCache]: Analyzing trace with hash 212466689, now seen corresponding path program 1 times [2022-11-02 21:01:52,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:52,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660584863] [2022-11-02 21:01:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:52,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:52,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:52,171 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:52,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:01:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:52,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-02 21:01:52,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:53,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:54,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:54,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660584863] [2022-11-02 21:01:54,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660584863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:54,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:54,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 21:01:54,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528384020] [2022-11-02 21:01:54,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:54,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:01:54,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:54,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:01:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:01:54,499 INFO L87 Difference]: Start difference. First operand 84 states and 111 transitions. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 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) [2022-11-02 21:01:54,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:54,795 INFO L93 Difference]: Finished difference Result 140 states and 192 transitions. [2022-11-02 21:01:54,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:01:54,800 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 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 79 [2022-11-02 21:01:54,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:54,800 INFO L225 Difference]: With dead ends: 140 [2022-11-02 21:01:54,800 INFO L226 Difference]: Without dead ends: 101 [2022-11-02 21:01:54,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:01:54,801 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 49 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:54,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 429 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 75 Unchecked, 0.1s Time] [2022-11-02 21:01:54,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-02 21:01:54,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2022-11-02 21:01:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.3505154639175259) internal successors, (131), 97 states have internal predecessors, (131), 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) [2022-11-02 21:01:54,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 131 transitions. [2022-11-02 21:01:54,807 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 131 transitions. Word has length 79 [2022-11-02 21:01:54,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:54,808 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 131 transitions. [2022-11-02 21:01:54,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 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) [2022-11-02 21:01:54,808 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 131 transitions. [2022-11-02 21:01:54,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:01:54,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:54,809 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:54,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:55,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:55,019 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:55,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash -210235137, now seen corresponding path program 1 times [2022-11-02 21:01:55,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:55,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871642781] [2022-11-02 21:01:55,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:55,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:55,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:55,023 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:55,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:01:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:55,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:01:55,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:01:55,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:01:56,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:56,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871642781] [2022-11-02 21:01:56,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871642781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:56,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:56,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-02 21:01:56,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570399139] [2022-11-02 21:01:56,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:56,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:01:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:56,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:01:56,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:01:56,202 INFO L87 Difference]: Start difference. First operand 98 states and 131 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 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) [2022-11-02 21:01:56,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:56,721 INFO L93 Difference]: Finished difference Result 289 states and 402 transitions. [2022-11-02 21:01:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:01:56,721 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 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 79 [2022-11-02 21:01:56,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:56,722 INFO L225 Difference]: With dead ends: 289 [2022-11-02 21:01:56,722 INFO L226 Difference]: Without dead ends: 250 [2022-11-02 21:01:56,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:01:56,723 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 282 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:56,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 695 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 125 Invalid, 0 Unknown, 213 Unchecked, 0.4s Time] [2022-11-02 21:01:56,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-02 21:01:56,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 156. [2022-11-02 21:01:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.3741935483870968) internal successors, (213), 155 states have internal predecessors, (213), 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) [2022-11-02 21:01:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 213 transitions. [2022-11-02 21:01:56,736 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 213 transitions. Word has length 79 [2022-11-02 21:01:56,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:56,737 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 213 transitions. [2022-11-02 21:01:56,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 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) [2022-11-02 21:01:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 213 transitions. [2022-11-02 21:01:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:01:56,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:56,739 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:56,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:56,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:56,953 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:56,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:56,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1899178879, now seen corresponding path program 1 times [2022-11-02 21:01:56,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:56,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913723098] [2022-11-02 21:01:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:56,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:56,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:56,957 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:56,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:01:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:57,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 21:01:57,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:01:58,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:59,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:59,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913723098] [2022-11-02 21:01:59,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913723098] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:59,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:59,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2022-11-02 21:01:59,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395237535] [2022-11-02 21:01:59,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:59,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:01:59,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:59,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:01:59,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:01:59,071 INFO L87 Difference]: Start difference. First operand 156 states and 213 transitions. Second operand has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 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) [2022-11-02 21:02:00,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:00,014 INFO L93 Difference]: Finished difference Result 448 states and 627 transitions. [2022-11-02 21:02:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 21:02:00,018 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 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 79 [2022-11-02 21:02:00,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:00,026 INFO L225 Difference]: With dead ends: 448 [2022-11-02 21:02:00,026 INFO L226 Difference]: Without dead ends: 372 [2022-11-02 21:02:00,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=235, Invalid=955, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 21:02:00,028 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 248 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 336 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:00,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 847 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 192 Invalid, 0 Unknown, 336 Unchecked, 0.4s Time] [2022-11-02 21:02:00,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-02 21:02:00,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 278. [2022-11-02 21:02:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.3862815884476534) internal successors, (384), 277 states have internal predecessors, (384), 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) [2022-11-02 21:02:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 384 transitions. [2022-11-02 21:02:00,043 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 384 transitions. Word has length 79 [2022-11-02 21:02:00,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:00,043 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 384 transitions. [2022-11-02 21:02:00,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 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) [2022-11-02 21:02:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 384 transitions. [2022-11-02 21:02:00,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:02:00,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:00,045 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:00,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:00,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:00,259 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:00,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:00,259 INFO L85 PathProgramCache]: Analyzing trace with hash 807440515, now seen corresponding path program 1 times [2022-11-02 21:02:00,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:00,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595732835] [2022-11-02 21:02:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:00,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:00,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:00,262 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:00,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:02:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:02:00,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:01,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:01,250 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:01,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:01,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595732835] [2022-11-02 21:02:01,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595732835] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:01,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:02:01,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:02:01,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080155758] [2022-11-02 21:02:01,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:01,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:02:01,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:01,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:02:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:02:01,253 INFO L87 Difference]: Start difference. First operand 278 states and 384 transitions. Second operand has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 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) [2022-11-02 21:02:01,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:01,747 INFO L93 Difference]: Finished difference Result 604 states and 837 transitions. [2022-11-02 21:02:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:02:01,748 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 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 79 [2022-11-02 21:02:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:01,750 INFO L225 Difference]: With dead ends: 604 [2022-11-02 21:02:01,751 INFO L226 Difference]: Without dead ends: 528 [2022-11-02 21:02:01,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:02:01,752 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 433 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:01,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 482 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 129 Invalid, 0 Unknown, 30 Unchecked, 0.3s Time] [2022-11-02 21:02:01,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-11-02 21:02:01,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 410. [2022-11-02 21:02:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.352078239608802) internal successors, (553), 409 states have internal predecessors, (553), 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) [2022-11-02 21:02:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 553 transitions. [2022-11-02 21:02:01,777 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 553 transitions. Word has length 79 [2022-11-02 21:02:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:01,778 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 553 transitions. [2022-11-02 21:02:01,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 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) [2022-11-02 21:02:01,779 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 553 transitions. [2022-11-02 21:02:01,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:02:01,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:01,780 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:01,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:01,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:01,995 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:01,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:01,995 INFO L85 PathProgramCache]: Analyzing trace with hash -472423163, now seen corresponding path program 1 times [2022-11-02 21:02:01,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:01,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563650904] [2022-11-02 21:02:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:01,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:01,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:01,997 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:02,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:02:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:02,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 21:02:02,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:02,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:03,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:03,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563650904] [2022-11-02 21:02:03,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563650904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:03,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:02:03,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:02:03,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338408175] [2022-11-02 21:02:03,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:03,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:02:03,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:03,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:02:03,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:02:03,056 INFO L87 Difference]: Start difference. First operand 410 states and 553 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2022-11-02 21:02:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:03,629 INFO L93 Difference]: Finished difference Result 872 states and 1181 transitions. [2022-11-02 21:02:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:02:03,629 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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 79 [2022-11-02 21:02:03,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:03,632 INFO L225 Difference]: With dead ends: 872 [2022-11-02 21:02:03,632 INFO L226 Difference]: Without dead ends: 796 [2022-11-02 21:02:03,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:02:03,634 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 465 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:03,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 559 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 160 Invalid, 0 Unknown, 42 Unchecked, 0.4s Time] [2022-11-02 21:02:03,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-02 21:02:03,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 686. [2022-11-02 21:02:03,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 685 states have (on average 1.327007299270073) internal successors, (909), 685 states have internal predecessors, (909), 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) [2022-11-02 21:02:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 909 transitions. [2022-11-02 21:02:03,663 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 909 transitions. Word has length 79 [2022-11-02 21:02:03,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:03,664 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 909 transitions. [2022-11-02 21:02:03,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2022-11-02 21:02:03,664 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 909 transitions. [2022-11-02 21:02:03,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:02:03,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:03,666 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:03,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:03,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:03,886 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:03,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:03,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1059229177, now seen corresponding path program 1 times [2022-11-02 21:02:03,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:03,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484010213] [2022-11-02 21:02:03,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:03,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:03,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:03,889 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:03,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:02:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:04,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:02:04,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:04,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:04,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:04,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484010213] [2022-11-02 21:02:04,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484010213] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:04,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:02:04,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:02:04,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569570191] [2022-11-02 21:02:04,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:04,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:02:04,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:04,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:02:04,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:02:04,797 INFO L87 Difference]: Start difference. First operand 686 states and 909 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 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) [2022-11-02 21:02:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:05,308 INFO L93 Difference]: Finished difference Result 1428 states and 1899 transitions. [2022-11-02 21:02:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:02:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 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 79 [2022-11-02 21:02:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:05,314 INFO L225 Difference]: With dead ends: 1428 [2022-11-02 21:02:05,314 INFO L226 Difference]: Without dead ends: 1352 [2022-11-02 21:02:05,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:02:05,316 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 426 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:05,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 541 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 141 Invalid, 0 Unknown, 26 Unchecked, 0.3s Time] [2022-11-02 21:02:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2022-11-02 21:02:05,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1266. [2022-11-02 21:02:05,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1265 states have (on average 1.3146245059288537) internal successors, (1663), 1265 states have internal predecessors, (1663), 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) [2022-11-02 21:02:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1663 transitions. [2022-11-02 21:02:05,392 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1663 transitions. Word has length 79 [2022-11-02 21:02:05,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:05,392 INFO L495 AbstractCegarLoop]: Abstraction has 1266 states and 1663 transitions. [2022-11-02 21:02:05,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 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) [2022-11-02 21:02:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1663 transitions. [2022-11-02 21:02:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:02:05,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:05,396 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-02 21:02:05,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:05,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:05,616 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:05,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:05,617 INFO L85 PathProgramCache]: Analyzing trace with hash 715778185, now seen corresponding path program 2 times [2022-11-02 21:02:05,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:05,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071356381] [2022-11-02 21:02:05,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:02:05,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:05,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:05,619 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:05,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:02:06,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:02:06,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:02:06,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-02 21:02:06,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:07,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:08,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:08,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071356381] [2022-11-02 21:02:08,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071356381] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:08,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:02:08,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2022-11-02 21:02:08,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720986026] [2022-11-02 21:02:08,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:08,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 21:02:08,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:08,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 21:02:08,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:02:08,240 INFO L87 Difference]: Start difference. First operand 1266 states and 1663 transitions. Second operand has 30 states, 30 states have (on average 5.2) internal successors, (156), 30 states have internal predecessors, (156), 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) [2022-11-02 21:02:08,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:08,641 INFO L93 Difference]: Finished difference Result 1798 states and 2358 transitions. [2022-11-02 21:02:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 21:02:08,642 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.2) internal successors, (156), 30 states have internal predecessors, (156), 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 79 [2022-11-02 21:02:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:08,647 INFO L225 Difference]: With dead ends: 1798 [2022-11-02 21:02:08,648 INFO L226 Difference]: Without dead ends: 1796 [2022-11-02 21:02:08,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=199, Invalid=1283, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 21:02:08,649 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 103 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 193 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:08,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 720 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 193 Unchecked, 0.0s Time] [2022-11-02 21:02:08,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2022-11-02 21:02:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1714. [2022-11-02 21:02:08,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1713 states have (on average 1.318739054290718) internal successors, (2259), 1713 states have internal predecessors, (2259), 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) [2022-11-02 21:02:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2259 transitions. [2022-11-02 21:02:08,711 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2259 transitions. Word has length 79 [2022-11-02 21:02:08,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:08,711 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2259 transitions. [2022-11-02 21:02:08,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.2) internal successors, (156), 30 states have internal predecessors, (156), 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) [2022-11-02 21:02:08,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2259 transitions. [2022-11-02 21:02:08,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:02:08,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:08,716 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:08,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:08,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:08,937 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:08,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:08,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1375309707, now seen corresponding path program 1 times [2022-11-02 21:02:08,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:08,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855324771] [2022-11-02 21:02:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:08,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:08,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:08,940 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:08,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:02:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:09,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-02 21:02:09,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:10,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:10,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:10,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855324771] [2022-11-02 21:02:10,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855324771] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:10,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:02:10,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 21:02:10,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391024791] [2022-11-02 21:02:10,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:10,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:02:10,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:10,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:02:10,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:02:10,914 INFO L87 Difference]: Start difference. First operand 1714 states and 2259 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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) [2022-11-02 21:02:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:11,240 INFO L93 Difference]: Finished difference Result 2228 states and 2969 transitions. [2022-11-02 21:02:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:02:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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 79 [2022-11-02 21:02:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:11,245 INFO L225 Difference]: With dead ends: 2228 [2022-11-02 21:02:11,245 INFO L226 Difference]: Without dead ends: 1350 [2022-11-02 21:02:11,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:02:11,247 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 37 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:11,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 366 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 63 Unchecked, 0.2s Time] [2022-11-02 21:02:11,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2022-11-02 21:02:11,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1350. [2022-11-02 21:02:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 1.295774647887324) internal successors, (1748), 1349 states have internal predecessors, (1748), 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) [2022-11-02 21:02:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1748 transitions. [2022-11-02 21:02:11,315 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1748 transitions. Word has length 79 [2022-11-02 21:02:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:11,316 INFO L495 AbstractCegarLoop]: Abstraction has 1350 states and 1748 transitions. [2022-11-02 21:02:11,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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) [2022-11-02 21:02:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1748 transitions. [2022-11-02 21:02:11,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:02:11,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:11,319 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:11,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:11,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:11,540 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:11,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:11,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1642098875, now seen corresponding path program 1 times [2022-11-02 21:02:11,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:11,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867143969] [2022-11-02 21:02:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:11,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:11,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:11,542 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:11,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:02:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:12,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:02:12,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:02:12,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:12,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:12,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867143969] [2022-11-02 21:02:12,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867143969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:12,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:12,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:12,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201472062] [2022-11-02 21:02:12,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:12,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:12,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:12,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:12,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:12,083 INFO L87 Difference]: Start difference. First operand 1350 states and 1748 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2022-11-02 21:02:12,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:12,190 INFO L93 Difference]: Finished difference Result 1458 states and 1901 transitions. [2022-11-02 21:02:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:12,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 79 [2022-11-02 21:02:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:12,194 INFO L225 Difference]: With dead ends: 1458 [2022-11-02 21:02:12,195 INFO L226 Difference]: Without dead ends: 938 [2022-11-02 21:02:12,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:12,196 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 58 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:12,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 178 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:02:12,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-11-02 21:02:12,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 906. [2022-11-02 21:02:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 1.2806629834254144) internal successors, (1159), 905 states have internal predecessors, (1159), 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) [2022-11-02 21:02:12,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1159 transitions. [2022-11-02 21:02:12,231 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1159 transitions. Word has length 79 [2022-11-02 21:02:12,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:12,231 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1159 transitions. [2022-11-02 21:02:12,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2022-11-02 21:02:12,232 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1159 transitions. [2022-11-02 21:02:12,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:12,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:12,234 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:12,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:12,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:12,448 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:12,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:12,448 INFO L85 PathProgramCache]: Analyzing trace with hash 289063433, now seen corresponding path program 1 times [2022-11-02 21:02:12,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:12,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670293172] [2022-11-02 21:02:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:12,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:12,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:12,451 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:12,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:02:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:13,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 148 conjunts are in the unsatisfiable core [2022-11-02 21:02:13,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 72 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:17,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:29,951 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~var_160_arg_1~0#1_33| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_228_arg_1~0#1_33| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_68_arg_1~0#1_34| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_143_arg_1~0#1_33| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_73_arg_1~0#1_34| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_91_arg_1~0#1_34| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_126_arg_0~0#1_33| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_211_arg_1~0#1_33| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_85_arg_1~0#1_34| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_245_arg_1~0#1_33| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_79_arg_1~0#1_34| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_177_arg_1~0#1_33| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_194_arg_1~0#1_33| (_ BitVec 8))) (not (= ((_ extract 7 0) (let ((.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_228_arg_1~0#1_33|) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_211_arg_1~0#1_33|) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_194_arg_1~0#1_33|) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_160_arg_1~0#1_33|) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |c_ULTIMATE.start_main_~next_47_arg_1~0#1|)))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse1 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_22~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_85_arg_1~0#1_34|) .cse1))))))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_79_arg_1~0#1_34|) .cse1)))))))) ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse2 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_18~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_73_arg_1~0#1_34|) .cse2))) ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_20~0#1|)))))))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_main_#t~ite17#1|)))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |c_ULTIMATE.start_main_~next_49_arg_1~0#1|)))) ((_ zero_extend 24) |c_ULTIMATE.start_main_~next_60_arg_1~0#1|))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_68_arg_1~0#1_34|) .cse2)))))))))))))))))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_91_arg_1~0#1_34|) ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_26~0#1|))))))))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_126_arg_0~0#1_33|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_143_arg_1~0#1_33|))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_177_arg_1~0#1_33|))))))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_245_arg_1~0#1_33|))))))) (_ bv0 8)))) is different from false [2022-11-02 21:03:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 72 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 21:03:51,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:51,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670293172] [2022-11-02 21:03:51,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670293172] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:51,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:51,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-02 21:03:51,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430315703] [2022-11-02 21:03:51,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:51,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 21:03:51,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:51,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 21:03:51,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2199, Unknown=37, NotChecked=94, Total=2450 [2022-11-02 21:03:51,158 INFO L87 Difference]: Start difference. First operand 906 states and 1159 transitions. Second operand has 50 states, 50 states have (on average 3.9) internal successors, (195), 50 states have internal predecessors, (195), 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) [2022-11-02 21:03:51,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:51,719 INFO L93 Difference]: Finished difference Result 1189 states and 1540 transitions. [2022-11-02 21:03:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 21:03:51,719 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.9) internal successors, (195), 50 states have internal predecessors, (195), 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 116 [2022-11-02 21:03:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:51,722 INFO L225 Difference]: With dead ends: 1189 [2022-11-02 21:03:51,722 INFO L226 Difference]: Without dead ends: 1039 [2022-11-02 21:03:51,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 95.6s TimeCoverageRelationStatistics Valid=134, Invalid=2383, Unknown=37, NotChecked=98, Total=2652 [2022-11-02 21:03:51,724 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 37 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 336 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:51,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1879 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 336 Unchecked, 0.0s Time] [2022-11-02 21:03:51,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2022-11-02 21:03:51,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1034. [2022-11-02 21:03:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.2720232333010648) internal successors, (1314), 1033 states have internal predecessors, (1314), 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) [2022-11-02 21:03:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1314 transitions. [2022-11-02 21:03:51,762 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1314 transitions. Word has length 116 [2022-11-02 21:03:51,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:51,763 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1314 transitions. [2022-11-02 21:03:51,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.9) internal successors, (195), 50 states have internal predecessors, (195), 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) [2022-11-02 21:03:51,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1314 transitions. [2022-11-02 21:03:51,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:51,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:51,766 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:51,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:51,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:51,990 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:51,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:51,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1566622147, now seen corresponding path program 1 times [2022-11-02 21:03:51,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:51,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910764738] [2022-11-02 21:03:51,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:51,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:51,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:51,994 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:52,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:03:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:52,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-02 21:03:52,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 78 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:03:53,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 78 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:03:54,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:54,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910764738] [2022-11-02 21:03:54,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910764738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:54,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:54,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 21:03:54,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277009576] [2022-11-02 21:03:54,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:54,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:03:54,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:03:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:03:54,184 INFO L87 Difference]: Start difference. First operand 1034 states and 1314 transitions. Second operand has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 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) [2022-11-02 21:03:54,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:54,490 INFO L93 Difference]: Finished difference Result 1152 states and 1481 transitions. [2022-11-02 21:03:54,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:03:54,491 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 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 116 [2022-11-02 21:03:54,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:54,495 INFO L225 Difference]: With dead ends: 1152 [2022-11-02 21:03:54,495 INFO L226 Difference]: Without dead ends: 1060 [2022-11-02 21:03:54,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:03:54,496 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 52 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:54,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 325 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-11-02 21:03:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-11-02 21:03:54,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1060. [2022-11-02 21:03:54,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 1.2738432483474977) internal successors, (1349), 1059 states have internal predecessors, (1349), 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) [2022-11-02 21:03:54,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1349 transitions. [2022-11-02 21:03:54,531 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1349 transitions. Word has length 116 [2022-11-02 21:03:54,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:54,531 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1349 transitions. [2022-11-02 21:03:54,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 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) [2022-11-02 21:03:54,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1349 transitions. [2022-11-02 21:03:54,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:54,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:54,535 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:54,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:54,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:54,758 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:54,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:54,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1940142411, now seen corresponding path program 1 times [2022-11-02 21:03:54,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:54,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108276561] [2022-11-02 21:03:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:54,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:54,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:54,760 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:54,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:03:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:55,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:03:55,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-02 21:03:55,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:55,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:55,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108276561] [2022-11-02 21:03:55,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108276561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:55,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:55,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:55,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38095657] [2022-11-02 21:03:55,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:55,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:55,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:55,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:55,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:55,451 INFO L87 Difference]: Start difference. First operand 1060 states and 1349 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-11-02 21:03:55,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:55,553 INFO L93 Difference]: Finished difference Result 1342 states and 1745 transitions. [2022-11-02 21:03:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:55,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 116 [2022-11-02 21:03:55,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:55,556 INFO L225 Difference]: With dead ends: 1342 [2022-11-02 21:03:55,556 INFO L226 Difference]: Without dead ends: 748 [2022-11-02 21:03:55,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:55,558 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 70 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:55,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 160 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:55,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-11-02 21:03:55,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2022-11-02 21:03:55,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 1.285140562248996) internal successors, (960), 747 states have internal predecessors, (960), 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) [2022-11-02 21:03:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 960 transitions. [2022-11-02 21:03:55,585 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 960 transitions. Word has length 116 [2022-11-02 21:03:55,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:55,585 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 960 transitions. [2022-11-02 21:03:55,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-11-02 21:03:55,586 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 960 transitions. [2022-11-02 21:03:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:55,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:55,588 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:55,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-02 21:03:55,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:55,803 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:55,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:55,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1320104331, now seen corresponding path program 1 times [2022-11-02 21:03:55,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:55,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790076327] [2022-11-02 21:03:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:55,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:55,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:55,806 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:55,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:03:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:56,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:03:56,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-02 21:03:56,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:56,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:56,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790076327] [2022-11-02 21:03:56,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790076327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:56,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:56,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:56,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47400434] [2022-11-02 21:03:56,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:56,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:56,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:56,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:56,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:56,525 INFO L87 Difference]: Start difference. First operand 748 states and 960 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2022-11-02 21:03:56,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:56,623 INFO L93 Difference]: Finished difference Result 1350 states and 1740 transitions. [2022-11-02 21:03:56,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:56,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 116 [2022-11-02 21:03:56,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:56,627 INFO L225 Difference]: With dead ends: 1350 [2022-11-02 21:03:56,627 INFO L226 Difference]: Without dead ends: 748 [2022-11-02 21:03:56,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:56,628 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 70 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:56,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 158 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:56,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-11-02 21:03:56,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2022-11-02 21:03:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 1.2784471218206157) internal successors, (955), 747 states have internal predecessors, (955), 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) [2022-11-02 21:03:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 955 transitions. [2022-11-02 21:03:56,655 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 955 transitions. Word has length 116 [2022-11-02 21:03:56,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:56,655 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 955 transitions. [2022-11-02 21:03:56,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2022-11-02 21:03:56,656 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 955 transitions. [2022-11-02 21:03:56,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:56,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:56,658 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:56,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-02 21:03:56,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:56,882 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:56,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:56,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1051349195, now seen corresponding path program 1 times [2022-11-02 21:03:56,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:56,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861769275] [2022-11-02 21:03:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:56,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:56,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:56,885 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:56,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:03:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:57,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:03:57,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-02 21:03:57,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:57,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:57,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861769275] [2022-11-02 21:03:57,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861769275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:57,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:57,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:57,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126711381] [2022-11-02 21:03:57,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:57,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:57,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:57,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:57,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:57,545 INFO L87 Difference]: Start difference. First operand 748 states and 955 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2022-11-02 21:03:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:57,639 INFO L93 Difference]: Finished difference Result 1014 states and 1331 transitions. [2022-11-02 21:03:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:57,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 116 [2022-11-02 21:03:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:57,642 INFO L225 Difference]: With dead ends: 1014 [2022-11-02 21:03:57,642 INFO L226 Difference]: Without dead ends: 576 [2022-11-02 21:03:57,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:57,643 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 70 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:57,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 156 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-11-02 21:03:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-11-02 21:03:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 1.2939130434782609) internal successors, (744), 575 states have internal predecessors, (744), 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) [2022-11-02 21:03:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 744 transitions. [2022-11-02 21:03:57,665 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 744 transitions. Word has length 116 [2022-11-02 21:03:57,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:57,665 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 744 transitions. [2022-11-02 21:03:57,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2022-11-02 21:03:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 744 transitions. [2022-11-02 21:03:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:57,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:57,668 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:57,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:57,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:57,889 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:57,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:57,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1744330613, now seen corresponding path program 1 times [2022-11-02 21:03:57,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:57,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757727958] [2022-11-02 21:03:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:57,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:57,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:57,892 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:57,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:03:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:58,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:03:58,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-02 21:03:58,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:58,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:58,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757727958] [2022-11-02 21:03:58,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757727958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:58,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:58,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:58,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642137960] [2022-11-02 21:03:58,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:58,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:58,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:58,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:58,555 INFO L87 Difference]: Start difference. First operand 576 states and 744 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-11-02 21:03:58,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:58,648 INFO L93 Difference]: Finished difference Result 1018 states and 1328 transitions. [2022-11-02 21:03:58,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:58,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 116 [2022-11-02 21:03:58,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:58,651 INFO L225 Difference]: With dead ends: 1018 [2022-11-02 21:03:58,651 INFO L226 Difference]: Without dead ends: 576 [2022-11-02 21:03:58,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:58,652 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 70 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:58,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 154 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:58,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-11-02 21:03:58,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-11-02 21:03:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 1.288695652173913) internal successors, (741), 575 states have internal predecessors, (741), 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) [2022-11-02 21:03:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 741 transitions. [2022-11-02 21:03:58,674 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 741 transitions. Word has length 116 [2022-11-02 21:03:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:58,675 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 741 transitions. [2022-11-02 21:03:58,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-11-02 21:03:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 741 transitions. [2022-11-02 21:03:58,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:58,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:58,677 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:58,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:58,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:58,891 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:58,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:58,891 INFO L85 PathProgramCache]: Analyzing trace with hash -808662327, now seen corresponding path program 1 times [2022-11-02 21:03:58,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:58,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513969559] [2022-11-02 21:03:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:58,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:58,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:58,895 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:58,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:03:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:59,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:03:59,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-02 21:03:59,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:59,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:59,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513969559] [2022-11-02 21:03:59,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513969559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:59,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:59,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:59,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693618626] [2022-11-02 21:03:59,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:59,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:59,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:59,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:59,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:59,572 INFO L87 Difference]: Start difference. First operand 576 states and 741 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2022-11-02 21:03:59,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:59,673 INFO L93 Difference]: Finished difference Result 814 states and 1079 transitions. [2022-11-02 21:03:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:59,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 116 [2022-11-02 21:03:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:59,675 INFO L225 Difference]: With dead ends: 814 [2022-11-02 21:03:59,675 INFO L226 Difference]: Without dead ends: 470 [2022-11-02 21:03:59,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:59,676 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 70 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:59,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 152 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:59,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-02 21:03:59,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2022-11-02 21:03:59,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.302771855010661) internal successors, (611), 469 states have internal predecessors, (611), 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) [2022-11-02 21:03:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 611 transitions. [2022-11-02 21:03:59,695 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 611 transitions. Word has length 116 [2022-11-02 21:03:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:59,696 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 611 transitions. [2022-11-02 21:03:59,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2022-11-02 21:03:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 611 transitions. [2022-11-02 21:03:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:59,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:59,698 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:59,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-02 21:03:59,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:59,920 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:59,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1852797045, now seen corresponding path program 1 times [2022-11-02 21:03:59,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:59,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169892215] [2022-11-02 21:03:59,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:59,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:59,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:59,922 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:59,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 21:04:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:00,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:00,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-02 21:04:00,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:00,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:00,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169892215] [2022-11-02 21:04:00,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169892215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:00,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:00,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:00,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496795740] [2022-11-02 21:04:00,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:00,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:00,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:00,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:00,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:00,604 INFO L87 Difference]: Start difference. First operand 470 states and 611 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2022-11-02 21:04:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:00,697 INFO L93 Difference]: Finished difference Result 704 states and 945 transitions. [2022-11-02 21:04:00,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:00,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 116 [2022-11-02 21:04:00,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:00,699 INFO L225 Difference]: With dead ends: 704 [2022-11-02 21:04:00,699 INFO L226 Difference]: Without dead ends: 362 [2022-11-02 21:04:00,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:00,701 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 70 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:00,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 150 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:00,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-02 21:04:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2022-11-02 21:04:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.335180055401662) internal successors, (482), 361 states have internal predecessors, (482), 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) [2022-11-02 21:04:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 482 transitions. [2022-11-02 21:04:00,717 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 482 transitions. Word has length 116 [2022-11-02 21:04:00,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:00,717 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 482 transitions. [2022-11-02 21:04:00,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2022-11-02 21:04:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 482 transitions. [2022-11-02 21:04:00,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-02 21:04:00,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:00,720 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:00,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:00,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:00,927 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:00,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:00,927 INFO L85 PathProgramCache]: Analyzing trace with hash 467779525, now seen corresponding path program 2 times [2022-11-02 21:04:00,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:00,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893599588] [2022-11-02 21:04:00,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:04:00,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:00,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:00,931 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:00,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29403995-a070-458b-b474-fd011214c80c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:04:01,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:04:01,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:01,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 148 conjunts are in the unsatisfiable core [2022-11-02 21:04:01,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 148 proven. 49 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 21:04:05,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:11,886 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~var_228_arg_1~0#1_42| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_211_arg_1~0#1_42| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_126_arg_0~0#1_42| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_160_arg_1~0#1_42| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_143_arg_1~0#1_42| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_79_arg_1~0#1_43| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_85_arg_1~0#1_43| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_245_arg_1~0#1_42| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_91_arg_1~0#1_43| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_194_arg_1~0#1_42| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_177_arg_1~0#1_42| (_ BitVec 8))) (not (= ((_ extract 7 0) (let ((.cse1 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_211_arg_1~0#1_42|) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_177_arg_1~0#1_42|) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_160_arg_1~0#1_42|) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_143_arg_1~0#1_42|) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_26~0#1|) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_91_arg_1~0#1_43|))))))))) ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_22~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_79_arg_1~0#1_43|) .cse0)))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_main_#t~ite19#1|)))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |c_ULTIMATE.start_main_~next_66_arg_1~0#1|)))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |c_ULTIMATE.start_main_~next_49_arg_1~0#1|)))) ((_ zero_extend 24) |c_ULTIMATE.start_main_~next_60_arg_1~0#1|))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |c_ULTIMATE.start_main_~next_70_arg_1~0#1|))))))))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_85_arg_1~0#1_43|) .cse0))))) .cse1))))))))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |c_ULTIMATE.start_main_~next_47_arg_1~0#1|))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_126_arg_0~0#1_42|))))))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_194_arg_1~0#1_42|))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_228_arg_1~0#1_42|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_245_arg_1~0#1_42|)))) .cse1))) (_ bv0 8)))) is different from false