./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro --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 0040318bb7d5d70cc95d7fb363d250bf2184336e92628a243777c547e7400e43 --- 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-8393723 [2022-11-18 18:25:23,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:25:23,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:25:23,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:25:23,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:25:23,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:25:23,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:25:23,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:25:23,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:25:23,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:25:23,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:25:23,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:25:23,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:25:23,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:25:23,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:25:23,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:25:23,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:25:23,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:25:23,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:25:23,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:25:23,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:25:23,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:25:23,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:25:23,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:25:24,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:25:24,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:25:24,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:25:24,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:25:24,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:25:24,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:25:24,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:25:24,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:25:24,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:25:24,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:25:24,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:25:24,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:25:24,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:25:24,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:25:24,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:25:24,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:25:24,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:25:24,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 18:25:24,045 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:25:24,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:25:24,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:25:24,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:25:24,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:25:24,048 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:25:24,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:25:24,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:25:24,049 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:25:24,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:25:24,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:25:24,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:25:24,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:25:24,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:25:24,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:25:24,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:25:24,052 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:25:24,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:25:24,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:25:24,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:25:24,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:25:24,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:25:24,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:25:24,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:25:24,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:25:24,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:25:24,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:25:24,056 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:25:24,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:25:24,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:25:24,056 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_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0040318bb7d5d70cc95d7fb363d250bf2184336e92628a243777c547e7400e43 [2022-11-18 18:25:24,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:25:24,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:25:24,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:25:24,462 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:25:24,463 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:25:24,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2022-11-18 18:25:24,573 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/data/51082337b/4bb75236869341b89a7badf028701556/FLAGb726e3021 [2022-11-18 18:25:25,196 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:25:25,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2022-11-18 18:25:25,206 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/data/51082337b/4bb75236869341b89a7badf028701556/FLAGb726e3021 [2022-11-18 18:25:25,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/data/51082337b/4bb75236869341b89a7badf028701556 [2022-11-18 18:25:25,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:25:25,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:25:25,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:25:25,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:25:25,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:25:25,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:25,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b59944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25, skipping insertion in model container [2022-11-18 18:25:25,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:25,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:25:25,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:25:25,820 WARN L234 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_915e2ca2-e086-4059-9493-b4ffaadd953c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1117,1130] [2022-11-18 18:25:25,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:25:25,876 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:25:25,891 WARN L234 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_915e2ca2-e086-4059-9493-b4ffaadd953c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1117,1130] [2022-11-18 18:25:25,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:25:25,927 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:25:25,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25 WrapperNode [2022-11-18 18:25:25,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:25:25,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:25:25,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:25:25,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:25:25,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:25,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:25,978 INFO L138 Inliner]: procedures = 11, calls = 4, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 119 [2022-11-18 18:25:25,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:25:25,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:25:25,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:25:25,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:25:25,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:25,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:25,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:25,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:26,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:26,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:26,008 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:26,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:26,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:25:26,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:25:26,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:25:26,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:25:26,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25" (1/1) ... [2022-11-18 18:25:26,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:25:26,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:26,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:25:26,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:25:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:25:26,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:25:26,230 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:25:26,232 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:25:26,591 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:25:26,600 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:25:26,600 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:25:26,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:25:26 BoogieIcfgContainer [2022-11-18 18:25:26,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:25:26,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:25:26,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:25:26,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:25:26,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:25:25" (1/3) ... [2022-11-18 18:25:26,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac4beff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:25:26, skipping insertion in model container [2022-11-18 18:25:26,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:25" (2/3) ... [2022-11-18 18:25:26,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac4beff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:25:26, skipping insertion in model container [2022-11-18 18:25:26,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:25:26" (3/3) ... [2022-11-18 18:25:26,614 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount2c.c [2022-11-18 18:25:26,640 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:25:26,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:25:26,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:25:26,766 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;@122d8f6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:25:26,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:25:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 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) [2022-11-18 18:25:26,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 18:25:26,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:26,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:26,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:26,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:26,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1914165743, now seen corresponding path program 1 times [2022-11-18 18:25:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:26,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921089068] [2022-11-18 18:25:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:26,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:27,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:27,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921089068] [2022-11-18 18:25:27,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921089068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:27,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:27,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:25:27,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165473802] [2022-11-18 18:25:27,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:27,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:25:27,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:27,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:25:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:25:27,075 INFO L87 Difference]: Start difference. First operand has 31 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 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 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:27,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:27,111 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2022-11-18 18:25:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:25:27,114 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 18:25:27,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:27,126 INFO L225 Difference]: With dead ends: 56 [2022-11-18 18:25:27,126 INFO L226 Difference]: Without dead ends: 27 [2022-11-18 18:25:27,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:25:27,135 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:27,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-18 18:25:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-18 18:25:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 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) [2022-11-18 18:25:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2022-11-18 18:25:27,184 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 15 [2022-11-18 18:25:27,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:27,185 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2022-11-18 18:25:27,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:27,185 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2022-11-18 18:25:27,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 18:25:27,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:27,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:27,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:25:27,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:27,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:27,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1856907441, now seen corresponding path program 1 times [2022-11-18 18:25:27,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:27,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783661533] [2022-11-18 18:25:27,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:27,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:27,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:27,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:27,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783661533] [2022-11-18 18:25:27,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783661533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:27,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:27,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:25:27,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279853372] [2022-11-18 18:25:27,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:27,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:25:27,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:27,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:25:27,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:25:27,607 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:27,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:27,679 INFO L93 Difference]: Finished difference Result 66 states and 96 transitions. [2022-11-18 18:25:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:25:27,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 18:25:27,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:27,681 INFO L225 Difference]: With dead ends: 66 [2022-11-18 18:25:27,681 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 18:25:27,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:25:27,684 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 93 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:27,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 133 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 18:25:27,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 29. [2022-11-18 18:25:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 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) [2022-11-18 18:25:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2022-11-18 18:25:27,691 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 15 [2022-11-18 18:25:27,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:27,692 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2022-11-18 18:25:27,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:27,692 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2022-11-18 18:25:27,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 18:25:27,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:27,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:27,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:25:27,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:27,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1727830820, now seen corresponding path program 1 times [2022-11-18 18:25:27,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:27,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209441931] [2022-11-18 18:25:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:27,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:28,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:28,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209441931] [2022-11-18 18:25:28,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209441931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:28,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:28,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:25:28,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170864273] [2022-11-18 18:25:28,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:28,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:25:28,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:28,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:25:28,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:25:28,122 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-11-18 18:25:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:28,227 INFO L93 Difference]: Finished difference Result 97 states and 142 transitions. [2022-11-18 18:25:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:25:28,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-11-18 18:25:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:28,230 INFO L225 Difference]: With dead ends: 97 [2022-11-18 18:25:28,230 INFO L226 Difference]: Without dead ends: 70 [2022-11-18 18:25:28,231 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 [2022-11-18 18:25:28,232 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 66 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:28,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 119 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:25:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-18 18:25:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 42. [2022-11-18 18:25:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 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) [2022-11-18 18:25:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2022-11-18 18:25:28,240 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 16 [2022-11-18 18:25:28,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:28,241 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2022-11-18 18:25:28,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-11-18 18:25:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2022-11-18 18:25:28,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 18:25:28,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:28,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:28,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:25:28,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:28,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1227717594, now seen corresponding path program 1 times [2022-11-18 18:25:28,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:28,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997670665] [2022-11-18 18:25:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:28,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:28,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:28,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997670665] [2022-11-18 18:25:28,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997670665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:25:28,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320293782] [2022-11-18 18:25:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:28,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:28,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:28,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:25:28,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:25:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:28,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 18:25:28,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:25:29,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:25:29,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320293782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:29,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:25:29,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-18 18:25:29,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031154889] [2022-11-18 18:25:29,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:29,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:25:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:29,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:25:29,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:25:29,150 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2022-11-18 18:25:29,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:29,232 INFO L93 Difference]: Finished difference Result 101 states and 143 transitions. [2022-11-18 18:25:29,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:25:29,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 33 [2022-11-18 18:25:29,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:29,234 INFO L225 Difference]: With dead ends: 101 [2022-11-18 18:25:29,234 INFO L226 Difference]: Without dead ends: 70 [2022-11-18 18:25:29,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:25:29,237 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 58 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:29,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 144 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:25:29,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-18 18:25:29,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 47. [2022-11-18 18:25:29,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 46 states have internal predecessors, (67), 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) [2022-11-18 18:25:29,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2022-11-18 18:25:29,246 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 33 [2022-11-18 18:25:29,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:29,247 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2022-11-18 18:25:29,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2022-11-18 18:25:29,247 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2022-11-18 18:25:29,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 18:25:29,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:29,249 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 18:25:29,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:29,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-18 18:25:29,457 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:29,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:29,458 INFO L85 PathProgramCache]: Analyzing trace with hash 268514058, now seen corresponding path program 1 times [2022-11-18 18:25:29,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:29,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772168684] [2022-11-18 18:25:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:29,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:29,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:29,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772168684] [2022-11-18 18:25:29,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772168684] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:25:29,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553013408] [2022-11-18 18:25:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:29,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:29,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:29,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:25:29,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:25:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:29,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 18:25:29,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:30,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:25:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:25:30,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553013408] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 18:25:30,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:25:30,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 9] total 14 [2022-11-18 18:25:30,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721745849] [2022-11-18 18:25:30,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:30,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:25:30,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:30,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:25:30,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:25:30,229 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-11-18 18:25:30,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:30,257 INFO L93 Difference]: Finished difference Result 80 states and 112 transitions. [2022-11-18 18:25:30,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:25:30,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 34 [2022-11-18 18:25:30,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:30,259 INFO L225 Difference]: With dead ends: 80 [2022-11-18 18:25:30,259 INFO L226 Difference]: Without dead ends: 47 [2022-11-18 18:25:30,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:25:30,261 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:30,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 108 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:30,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-18 18:25:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2022-11-18 18:25:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 41 states have internal predecessors, (58), 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) [2022-11-18 18:25:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 58 transitions. [2022-11-18 18:25:30,267 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 58 transitions. Word has length 34 [2022-11-18 18:25:30,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:30,268 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 58 transitions. [2022-11-18 18:25:30,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-11-18 18:25:30,268 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 58 transitions. [2022-11-18 18:25:30,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 18:25:30,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:30,270 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:30,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:30,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:30,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:30,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:30,478 INFO L85 PathProgramCache]: Analyzing trace with hash 230661950, now seen corresponding path program 1 times [2022-11-18 18:25:30,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:30,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379899352] [2022-11-18 18:25:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:30,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:30,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:30,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379899352] [2022-11-18 18:25:30,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379899352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:25:30,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895189212] [2022-11-18 18:25:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:30,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:30,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:30,869 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:25:30,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:25:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:30,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 18:25:30,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:31,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:25:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:32,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895189212] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:25:32,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:25:32,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20 [2022-11-18 18:25:32,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869305000] [2022-11-18 18:25:32,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:25:32,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 18:25:32,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:32,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 18:25:32,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:25:32,072 INFO L87 Difference]: Start difference. First operand 42 states and 58 transitions. Second operand has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 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) [2022-11-18 18:25:33,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:33,143 INFO L93 Difference]: Finished difference Result 185 states and 265 transitions. [2022-11-18 18:25:33,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:25:33,143 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 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 35 [2022-11-18 18:25:33,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:33,145 INFO L225 Difference]: With dead ends: 185 [2022-11-18 18:25:33,145 INFO L226 Difference]: Without dead ends: 158 [2022-11-18 18:25:33,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=364, Invalid=968, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 18:25:33,151 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1059 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:33,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 274 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:25:33,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-18 18:25:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 46. [2022-11-18 18:25:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 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) [2022-11-18 18:25:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2022-11-18 18:25:33,159 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 35 [2022-11-18 18:25:33,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:33,159 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2022-11-18 18:25:33,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 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) [2022-11-18 18:25:33,160 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2022-11-18 18:25:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 18:25:33,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:33,161 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 18:25:33,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:33,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 18:25:33,377 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:33,377 INFO L85 PathProgramCache]: Analyzing trace with hash -345792303, now seen corresponding path program 1 times [2022-11-18 18:25:33,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:33,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064467642] [2022-11-18 18:25:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:33,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:33,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:33,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064467642] [2022-11-18 18:25:33,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064467642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:33,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:33,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:25:33,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373327082] [2022-11-18 18:25:33,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:33,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:25:33,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:33,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:25:33,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:25:33,674 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-11-18 18:25:33,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:33,768 INFO L93 Difference]: Finished difference Result 155 states and 216 transitions. [2022-11-18 18:25:33,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:25:33,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2022-11-18 18:25:33,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:33,769 INFO L225 Difference]: With dead ends: 155 [2022-11-18 18:25:33,769 INFO L226 Difference]: Without dead ends: 111 [2022-11-18 18:25:33,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:25:33,771 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 113 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:33,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 111 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:25:33,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-18 18:25:33,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 63. [2022-11-18 18:25:33,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 62 states have internal predecessors, (86), 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) [2022-11-18 18:25:33,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2022-11-18 18:25:33,778 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 36 [2022-11-18 18:25:33,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:33,778 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2022-11-18 18:25:33,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-11-18 18:25:33,779 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2022-11-18 18:25:33,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 18:25:33,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:33,780 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 18:25:33,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:25:33,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:33,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:33,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2034736045, now seen corresponding path program 1 times [2022-11-18 18:25:33,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:33,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986487426] [2022-11-18 18:25:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:33,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:34,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:34,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986487426] [2022-11-18 18:25:34,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986487426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:25:34,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297001238] [2022-11-18 18:25:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:34,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:34,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:34,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:25:34,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:25:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:34,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 18:25:34,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:34,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:25:34,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297001238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:34,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:25:34,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-11-18 18:25:34,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339232302] [2022-11-18 18:25:34,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:34,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:25:34,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:34,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:25:34,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:25:34,277 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2022-11-18 18:25:34,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:34,402 INFO L93 Difference]: Finished difference Result 159 states and 220 transitions. [2022-11-18 18:25:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:25:34,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 36 [2022-11-18 18:25:34,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:34,404 INFO L225 Difference]: With dead ends: 159 [2022-11-18 18:25:34,404 INFO L226 Difference]: Without dead ends: 114 [2022-11-18 18:25:34,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:25:34,407 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 129 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:34,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 159 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:25:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-18 18:25:34,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 74. [2022-11-18 18:25:34,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 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) [2022-11-18 18:25:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2022-11-18 18:25:34,428 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 36 [2022-11-18 18:25:34,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:34,429 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2022-11-18 18:25:34,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2022-11-18 18:25:34,429 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2022-11-18 18:25:34,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 18:25:34,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:34,431 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 18:25:34,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 18:25:34,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 18:25:34,638 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:34,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:34,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1391148479, now seen corresponding path program 1 times [2022-11-18 18:25:34,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:34,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205518430] [2022-11-18 18:25:34,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:34,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:34,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:34,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205518430] [2022-11-18 18:25:34,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205518430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:25:34,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161850283] [2022-11-18 18:25:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:34,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:34,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:34,947 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:25:34,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:25:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:35,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 18:25:35,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:35,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:25:35,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161850283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:35,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:25:35,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-18 18:25:35,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688374582] [2022-11-18 18:25:35,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:35,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:25:35,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:35,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:25:35,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:25:35,237 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2022-11-18 18:25:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:35,387 INFO L93 Difference]: Finished difference Result 149 states and 203 transitions. [2022-11-18 18:25:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:25:35,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 37 [2022-11-18 18:25:35,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:35,389 INFO L225 Difference]: With dead ends: 149 [2022-11-18 18:25:35,389 INFO L226 Difference]: Without dead ends: 104 [2022-11-18 18:25:35,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:25:35,390 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 115 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:35,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 163 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:25:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-18 18:25:35,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 62. [2022-11-18 18:25:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 61 states have internal predecessors, (84), 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) [2022-11-18 18:25:35,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 84 transitions. [2022-11-18 18:25:35,396 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 84 transitions. Word has length 37 [2022-11-18 18:25:35,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:35,396 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 84 transitions. [2022-11-18 18:25:35,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2022-11-18 18:25:35,397 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 84 transitions. [2022-11-18 18:25:35,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 18:25:35,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:35,398 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 18:25:35,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:35,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:35,605 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:35,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:35,606 INFO L85 PathProgramCache]: Analyzing trace with hash -14132907, now seen corresponding path program 1 times [2022-11-18 18:25:35,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:35,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803032346] [2022-11-18 18:25:35,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:35,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:35,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:35,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803032346] [2022-11-18 18:25:35,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803032346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:35,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:35,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:25:35,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448329894] [2022-11-18 18:25:35,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:35,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:25:35,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:25:35,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:25:35,891 INFO L87 Difference]: Start difference. First operand 62 states and 84 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-11-18 18:25:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:35,984 INFO L93 Difference]: Finished difference Result 146 states and 201 transitions. [2022-11-18 18:25:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:25:35,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 37 [2022-11-18 18:25:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:35,987 INFO L225 Difference]: With dead ends: 146 [2022-11-18 18:25:35,987 INFO L226 Difference]: Without dead ends: 102 [2022-11-18 18:25:35,987 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 [2022-11-18 18:25:35,988 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 46 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:35,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 100 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:25:35,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-18 18:25:35,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 78. [2022-11-18 18:25:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3636363636363635) internal successors, (105), 77 states have internal predecessors, (105), 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) [2022-11-18 18:25:36,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 105 transitions. [2022-11-18 18:25:36,023 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 105 transitions. Word has length 37 [2022-11-18 18:25:36,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:36,024 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 105 transitions. [2022-11-18 18:25:36,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-11-18 18:25:36,025 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 105 transitions. [2022-11-18 18:25:36,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 18:25:36,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:36,030 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 18:25:36,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:25:36,031 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:36,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1703076649, now seen corresponding path program 1 times [2022-11-18 18:25:36,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:36,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718305831] [2022-11-18 18:25:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:36,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:36,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:36,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718305831] [2022-11-18 18:25:36,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718305831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:25:36,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803193318] [2022-11-18 18:25:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:36,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:36,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:36,334 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:25:36,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:25:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:36,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 18:25:36,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:37,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:25:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:38,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803193318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:25:38,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:25:38,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 13] total 30 [2022-11-18 18:25:38,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931654503] [2022-11-18 18:25:38,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:25:38,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 18:25:38,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:38,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 18:25:38,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2022-11-18 18:25:38,396 INFO L87 Difference]: Start difference. First operand 78 states and 105 transitions. Second operand has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 30 states have internal predecessors, (103), 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) [2022-11-18 18:25:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:39,739 INFO L93 Difference]: Finished difference Result 461 states and 616 transitions. [2022-11-18 18:25:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 18:25:39,740 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 30 states have internal predecessors, (103), 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 37 [2022-11-18 18:25:39,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:39,743 INFO L225 Difference]: With dead ends: 461 [2022-11-18 18:25:39,744 INFO L226 Difference]: Without dead ends: 417 [2022-11-18 18:25:39,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=987, Invalid=2205, Unknown=0, NotChecked=0, Total=3192 [2022-11-18 18:25:39,746 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1645 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:39,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 306 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:25:39,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-18 18:25:39,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 121. [2022-11-18 18:25:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.3083333333333333) internal successors, (157), 120 states have internal predecessors, (157), 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) [2022-11-18 18:25:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2022-11-18 18:25:39,770 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 37 [2022-11-18 18:25:39,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:39,771 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2022-11-18 18:25:39,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 30 states have internal predecessors, (103), 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) [2022-11-18 18:25:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2022-11-18 18:25:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 18:25:39,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:39,773 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-11-18 18:25:39,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:39,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:39,980 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:39,981 INFO L85 PathProgramCache]: Analyzing trace with hash -200748836, now seen corresponding path program 1 times [2022-11-18 18:25:39,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:39,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227350444] [2022-11-18 18:25:39,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:39,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:25:40,060 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:25:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:25:40,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:25:40,128 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:25:40,130 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 18:25:40,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:25:40,137 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:40,141 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:25:40,208 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:25:40,213 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:25:40,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:25:40 BoogieIcfgContainer [2022-11-18 18:25:40,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:25:40,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:25:40,230 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:25:40,230 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:25:40,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:25:26" (3/4) ... [2022-11-18 18:25:40,234 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 18:25:40,234 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:25:40,235 INFO L158 Benchmark]: Toolchain (without parser) took 14664.91ms. Allocated memory was 111.1MB in the beginning and 218.1MB in the end (delta: 107.0MB). Free memory was 71.9MB in the beginning and 111.8MB in the end (delta: -40.0MB). Peak memory consumption was 66.5MB. Max. memory is 16.1GB. [2022-11-18 18:25:40,235 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 111.1MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:25:40,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.00ms. Allocated memory is still 111.1MB. Free memory was 71.6MB in the beginning and 85.7MB in the end (delta: -14.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:25:40,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.46ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 83.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:25:40,236 INFO L158 Benchmark]: Boogie Preprocessor took 32.93ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 82.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:25:40,237 INFO L158 Benchmark]: RCFGBuilder took 589.79ms. Allocated memory is still 111.1MB. Free memory was 82.2MB in the beginning and 68.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-18 18:25:40,238 INFO L158 Benchmark]: TraceAbstraction took 13622.82ms. Allocated memory was 111.1MB in the beginning and 218.1MB in the end (delta: 107.0MB). Free memory was 67.6MB in the beginning and 112.9MB in the end (delta: -45.3MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. [2022-11-18 18:25:40,238 INFO L158 Benchmark]: Witness Printer took 4.66ms. Allocated memory is still 218.1MB. Free memory was 112.9MB in the beginning and 111.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:25:40,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 111.1MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.00ms. Allocated memory is still 111.1MB. Free memory was 71.6MB in the beginning and 85.7MB in the end (delta: -14.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.46ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 83.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.93ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 82.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 589.79ms. Allocated memory is still 111.1MB. Free memory was 82.2MB in the beginning and 68.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 13622.82ms. Allocated memory was 111.1MB in the beginning and 218.1MB in the end (delta: 107.0MB). Free memory was 67.6MB in the beginning and 112.9MB in the end (delta: -45.3MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. * Witness Printer took 4.66ms. Allocated memory is still 218.1MB. Free memory was 112.9MB in the beginning and 111.8MB in the end (delta: 1.0MB). 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: 21]: 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 55, overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 2); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (2 - 1); [L32] const SORT_2 var_5 = 0; [L33] const SORT_2 var_10 = 1; [L34] const SORT_2 var_17 = mask_SORT_2; [L36] SORT_1 input_3; [L37] SORT_1 input_4; [L39] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L40] SORT_2 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L42] SORT_2 init_8_arg_1 = var_5; [L43] state_6 = init_8_arg_1 [L44] SORT_2 init_9_arg_1 = var_5; [L45] state_7 = init_9_arg_1 VAL [init_8_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_6=0, state_7=0, var_10=1, var_17=3, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 VAL [init_8_arg_1=0, init_9_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_6=0, state_7=0, var_10=1, var_17=3, var_5=0] [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 VAL [init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_6=0, state_7=0, var_10=1, var_17=3, var_5=0] [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); VAL [init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_6=0, state_7=0, var_10=1, var_17=3, var_22_arg_0=1, var_22_arg_1=1, var_5=0] [L56] var_22 = var_22 & mask_SORT_1 VAL [init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_6=0, state_7=0, var_10=1, var_17=3, var_22=1, var_22_arg_0=1, var_22_arg_1=1, var_5=0] [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; VAL [constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_6=0, state_7=0, var_10=1, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=1, var_5=0] [L69] var_20 = var_20 & mask_SORT_1 VAL [constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_6=0, state_7=0, var_10=1, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=1, var_5=0] [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_6=0, state_7=0, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_13=1, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=1, var_5=0] [L80] var_13 = var_13 & mask_SORT_2 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_6=0, state_7=0, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_13=3, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=1, var_5=0] [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, state_6=0, state_7=0, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_13=3, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_14=1, var_14_arg_0=1, var_14_arg_1=1, var_14_arg_2=0, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=1, var_5=0] [L89] var_14 = var_14 & mask_SORT_2 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, state_6=0, state_7=0, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_13=3, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_14=3, var_14_arg_0=1, var_14_arg_1=1, var_14_arg_2=0, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=1, var_5=0] [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, next_16_arg_1=3, state_6=3, state_7=3, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_13=3, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_14=3, var_14_arg_0=1, var_14_arg_1=1, var_14_arg_2=0, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=1, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=0, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, next_16_arg_1=3, state_6=3, state_7=3, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_13=3, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_14=3, var_14_arg_0=1, var_14_arg_1=1, var_14_arg_2=0, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=1, var_5=0] [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=0, input_4=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, next_16_arg_1=3, state_6=3, state_7=3, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_13=3, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_14=3, var_14_arg_0=1, var_14_arg_1=1, var_14_arg_2=0, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=1, var_5=0] [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=0, input_4=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, next_16_arg_1=3, state_6=3, state_7=3, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_13=3, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_14=3, var_14_arg_0=1, var_14_arg_1=1, var_14_arg_2=0, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22_arg_0=0, var_22_arg_1=0, var_5=0] [L56] var_22 = var_22 & mask_SORT_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=0, input_4=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, next_16_arg_1=3, state_6=3, state_7=3, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_13=3, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_14=3, var_14_arg_0=1, var_14_arg_1=1, var_14_arg_2=0, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=0, var_22_arg_1=0, var_5=0] [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=0, input_4=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, next_16_arg_1=3, state_6=3, state_7=3, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_13=3, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_14=3, var_14_arg_0=1, var_14_arg_1=1, var_14_arg_2=0, var_17=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=1, var_19_arg_0=3, var_19_arg_1=3, var_20=1, var_20_arg_0=1, var_20_arg_1=1, var_22=1, var_22_arg_0=0, var_22_arg_1=0, var_5=0] [L69] var_20 = var_20 & mask_SORT_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=0, input_4=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, next_16_arg_1=3, state_6=3, state_7=3, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_13=3, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_14=3, var_14_arg_0=1, var_14_arg_1=1, var_14_arg_2=0, var_17=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=1, var_19_arg_0=3, var_19_arg_1=3, var_20=1, var_20_arg_0=1, var_20_arg_1=1, var_22=1, var_22_arg_0=0, var_22_arg_1=0, var_5=0] [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.4s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3325 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3325 mSDsluCounter, 1656 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1183 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1283 IncrementalHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 473 mSDtfsCounter, 1283 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 423 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1216 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=11, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 653 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 582 NumberOfCodeBlocks, 582 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 629 ConstructedInterpolants, 0 QuantifiedInterpolants, 4278 SizeOfPredicates, 102 NumberOfNonLiveVariables, 1098 ConjunctsInSsa, 251 ConjunctsInUnsatCore, 20 InterpolantComputations, 9 PerfectInterpolantSequences, 158/216 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 [2022-11-18 18:25:40,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro --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 0040318bb7d5d70cc95d7fb363d250bf2184336e92628a243777c547e7400e43 --- 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-8393723 [2022-11-18 18:25:42,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:25:42,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:25:43,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:25:43,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:25:43,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:25:43,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:25:43,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:25:43,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:25:43,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:25:43,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:25:43,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:25:43,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:25:43,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:25:43,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:25:43,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:25:43,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:25:43,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:25:43,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:25:43,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:25:43,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:25:43,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:25:43,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:25:43,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:25:43,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:25:43,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:25:43,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:25:43,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:25:43,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:25:43,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:25:43,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:25:43,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:25:43,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:25:43,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:25:43,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:25:43,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:25:43,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:25:43,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:25:43,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:25:43,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:25:43,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:25:43,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-18 18:25:43,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:25:43,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:25:43,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:25:43,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:25:43,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:25:43,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:25:43,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:25:43,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:25:43,122 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:25:43,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:25:43,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:25:43,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:25:43,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:25:43,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:25:43,124 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:25:43,124 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 18:25:43,125 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 18:25:43,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:25:43,128 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:25:43,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:25:43,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:25:43,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:25:43,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:25:43,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:25:43,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:25:43,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:25:43,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:25:43,131 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 18:25:43,131 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 18:25:43,131 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:25:43,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:25:43,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:25:43,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 18:25:43,132 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_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0040318bb7d5d70cc95d7fb363d250bf2184336e92628a243777c547e7400e43 [2022-11-18 18:25:43,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:25:43,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:25:43,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:25:43,699 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:25:43,701 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:25:43,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2022-11-18 18:25:43,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/data/8956ee970/336d71482ec4417fb8880f96cdd2cb73/FLAG3e5921a2c [2022-11-18 18:25:44,547 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:25:44,548 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2022-11-18 18:25:44,557 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/data/8956ee970/336d71482ec4417fb8880f96cdd2cb73/FLAG3e5921a2c [2022-11-18 18:25:44,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/data/8956ee970/336d71482ec4417fb8880f96cdd2cb73 [2022-11-18 18:25:44,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:25:44,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:25:44,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:25:44,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:25:44,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:25:44,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:25:44" (1/1) ... [2022-11-18 18:25:44,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b506e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:44, skipping insertion in model container [2022-11-18 18:25:44,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:25:44" (1/1) ... [2022-11-18 18:25:44,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:25:44,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:25:45,061 WARN L234 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_915e2ca2-e086-4059-9493-b4ffaadd953c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1117,1130] [2022-11-18 18:25:45,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:25:45,111 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:25:45,146 WARN L234 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_915e2ca2-e086-4059-9493-b4ffaadd953c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1117,1130] [2022-11-18 18:25:45,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:25:45,222 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:25:45,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45 WrapperNode [2022-11-18 18:25:45,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:25:45,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:25:45,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:25:45,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:25:45,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45" (1/1) ... [2022-11-18 18:25:45,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45" (1/1) ... [2022-11-18 18:25:45,283 INFO L138 Inliner]: procedures = 11, calls = 4, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2022-11-18 18:25:45,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:25:45,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:25:45,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:25:45,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:25:45,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45" (1/1) ... [2022-11-18 18:25:45,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45" (1/1) ... [2022-11-18 18:25:45,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45" (1/1) ... [2022-11-18 18:25:45,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45" (1/1) ... [2022-11-18 18:25:45,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45" (1/1) ... [2022-11-18 18:25:45,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45" (1/1) ... [2022-11-18 18:25:45,316 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45" (1/1) ... [2022-11-18 18:25:45,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45" (1/1) ... [2022-11-18 18:25:45,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:25:45,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:25:45,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:25:45,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:25:45,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45" (1/1) ... [2022-11-18 18:25:45,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:25:45,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:45,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:25:45,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:25:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:25:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:25:45,553 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:25:45,556 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:25:45,857 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:25:45,872 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:25:45,872 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:25:45,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:25:45 BoogieIcfgContainer [2022-11-18 18:25:45,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:25:45,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:25:45,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:25:45,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:25:45,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:25:44" (1/3) ... [2022-11-18 18:25:45,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222aa22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:25:45, skipping insertion in model container [2022-11-18 18:25:45,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:45" (2/3) ... [2022-11-18 18:25:45,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222aa22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:25:45, skipping insertion in model container [2022-11-18 18:25:45,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:25:45" (3/3) ... [2022-11-18 18:25:45,895 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount2c.c [2022-11-18 18:25:45,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:25:45,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:25:46,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:25:46,040 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;@3c2641fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:25:46,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:25:46,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-18 18:25:46,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:25:46,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:46,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:46,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:46,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1809708109, now seen corresponding path program 1 times [2022-11-18 18:25:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:25:46,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803321833] [2022-11-18 18:25:46,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:46,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:25:46,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:25:46,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:25:46,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 18:25:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:46,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 18:25:46,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:46,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:25:46,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:25:46,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803321833] [2022-11-18 18:25:46,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803321833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:46,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:46,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:25:46,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418611077] [2022-11-18 18:25:46,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:46,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:25:46,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:25:46,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:25:46,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:25:46,334 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-18 18:25:46,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:46,351 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2022-11-18 18:25:46,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:25:46,355 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-18 18:25:46,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:46,366 INFO L225 Difference]: With dead ends: 20 [2022-11-18 18:25:46,367 INFO L226 Difference]: Without dead ends: 9 [2022-11-18 18:25:46,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:25:46,379 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:46,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:46,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-18 18:25:46,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-18 18:25:46,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-18 18:25:46,427 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-11-18 18:25:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:46,427 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-18 18:25:46,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-18 18:25:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-18 18:25:46,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:25:46,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:46,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:46,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:46,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:25:46,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:46,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:46,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1809767691, now seen corresponding path program 1 times [2022-11-18 18:25:46,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:25:46,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384529400] [2022-11-18 18:25:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:46,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:25:46,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:25:46,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:25:46,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 18:25:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:46,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:25:46,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:47,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:25:47,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:25:47,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384529400] [2022-11-18 18:25:47,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384529400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:47,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:47,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:25:47,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658353930] [2022-11-18 18:25:47,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:47,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:25:47,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:25:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:25:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:25:47,037 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-18 18:25:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:47,128 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-18 18:25:47,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:25:47,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-11-18 18:25:47,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:47,130 INFO L225 Difference]: With dead ends: 19 [2022-11-18 18:25:47,130 INFO L226 Difference]: Without dead ends: 17 [2022-11-18 18:25:47,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:25:47,132 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:47,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-18 18:25:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2022-11-18 18:25:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-18 18:25:47,147 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2022-11-18 18:25:47,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:47,147 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-18 18:25:47,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-18 18:25:47,148 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-18 18:25:47,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:25:47,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:47,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:47,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:47,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:25:47,364 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:47,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1841040349, now seen corresponding path program 1 times [2022-11-18 18:25:47,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:25:47,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927182268] [2022-11-18 18:25:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:47,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:25:47,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:25:47,373 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:25:47,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 18:25:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:47,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 18:25:47,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:47,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:25:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:48,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:25:48,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927182268] [2022-11-18 18:25:48,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927182268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:25:48,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:25:48,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:25:48,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364579260] [2022-11-18 18:25:48,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:25:48,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:25:48,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:25:48,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:25:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:25:48,366 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2022-11-18 18:25:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:48,482 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-11-18 18:25:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:25:48,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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 12 [2022-11-18 18:25:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:48,485 INFO L225 Difference]: With dead ends: 24 [2022-11-18 18:25:48,485 INFO L226 Difference]: Without dead ends: 22 [2022-11-18 18:25:48,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:25:48,486 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:48,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 32 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2022-11-18 18:25:48,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-18 18:25:48,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2022-11-18 18:25:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-18 18:25:48,497 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2022-11-18 18:25:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:48,498 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-18 18:25:48,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2022-11-18 18:25:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-18 18:25:48,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 18:25:48,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:48,499 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2022-11-18 18:25:48,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:48,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:25:48,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:48,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:48,714 INFO L85 PathProgramCache]: Analyzing trace with hash 191466507, now seen corresponding path program 2 times [2022-11-18 18:25:48,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:25:48,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963956167] [2022-11-18 18:25:48,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:25:48,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:25:48,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:25:48,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:25:48,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 18:25:48,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:25:48,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:25:48,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:25:48,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:49,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:25:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:50,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:25:50,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963956167] [2022-11-18 18:25:50,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963956167] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:25:50,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:25:50,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-18 18:25:50,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365953537] [2022-11-18 18:25:50,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:25:50,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:25:50,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:25:50,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:25:50,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:25:50,048 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:50,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:50,217 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-11-18 18:25:50,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:25:50,218 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 18:25:50,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:50,219 INFO L225 Difference]: With dead ends: 29 [2022-11-18 18:25:50,219 INFO L226 Difference]: Without dead ends: 27 [2022-11-18 18:25:50,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:25:50,221 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 33 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:50,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 40 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-11-18 18:25:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-18 18:25:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-18 18:25:50,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 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) [2022-11-18 18:25:50,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-11-18 18:25:50,229 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2022-11-18 18:25:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:50,230 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-11-18 18:25:50,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-11-18 18:25:50,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 18:25:50,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:50,232 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1] [2022-11-18 18:25:50,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:50,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:25:50,446 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:50,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1190222557, now seen corresponding path program 3 times [2022-11-18 18:25:50,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:25:50,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92610479] [2022-11-18 18:25:50,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:25:50,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:25:50,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:25:50,449 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:25:50,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 18:25:50,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 18:25:50,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:25:50,600 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-18 18:25:50,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:53,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:26:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:00,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:00,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92610479] [2022-11-18 18:26:00,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92610479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:26:00,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:26:00,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-18 18:26:00,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675196971] [2022-11-18 18:26:00,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:26:00,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 18:26:00,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:00,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 18:26:00,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:26:00,458 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 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) [2022-11-18 18:26:01,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:01,133 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-11-18 18:26:01,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:26:01,134 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 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 22 [2022-11-18 18:26:01,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:01,135 INFO L225 Difference]: With dead ends: 30 [2022-11-18 18:26:01,136 INFO L226 Difference]: Without dead ends: 28 [2022-11-18 18:26:01,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2022-11-18 18:26:01,137 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:01,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 34 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-11-18 18:26:01,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-18 18:26:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-18 18:26:01,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 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) [2022-11-18 18:26:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-11-18 18:26:01,145 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 22 [2022-11-18 18:26:01,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:01,146 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-11-18 18:26:01,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 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) [2022-11-18 18:26:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-11-18 18:26:01,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 18:26:01,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:01,155 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-11-18 18:26:01,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:01,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:01,368 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:26:01,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:01,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1666876661, now seen corresponding path program 4 times [2022-11-18 18:26:01,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:01,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815748021] [2022-11-18 18:26:01,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:26:01,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:01,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:01,372 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:01,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 18:26:01,500 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:26:01,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:26:01,521 WARN L261 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-18 18:26:01,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:11,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:26:47,691 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 622 DAG size of output: 570 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:27:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:27:00,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:27:00,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815748021] [2022-11-18 18:27:00,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815748021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:00,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:00,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-18 18:27:00,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503887671] [2022-11-18 18:27:00,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:00,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:27:00,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:27:00,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:27:00,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:27:00,153 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 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) [2022-11-18 18:27:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:00,999 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2022-11-18 18:27:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:27:01,000 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 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 27 [2022-11-18 18:27:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:01,001 INFO L225 Difference]: With dead ends: 35 [2022-11-18 18:27:01,001 INFO L226 Difference]: Without dead ends: 33 [2022-11-18 18:27:01,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=294, Invalid=698, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:27:01,003 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:01,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 31 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-11-18 18:27:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-18 18:27:01,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-18 18:27:01,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 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) [2022-11-18 18:27:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2022-11-18 18:27:01,015 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 27 [2022-11-18 18:27:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:01,016 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2022-11-18 18:27:01,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 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) [2022-11-18 18:27:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2022-11-18 18:27:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 18:27:01,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:01,018 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1] [2022-11-18 18:27:01,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:01,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:27:01,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:27:01,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1963977181, now seen corresponding path program 5 times [2022-11-18 18:27:01,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:27:01,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166888793] [2022-11-18 18:27:01,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:27:01,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:27:01,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:27:01,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:27:01,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 18:27:01,391 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 18:27:01,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:27:01,406 WARN L261 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 170 conjunts are in the unsatisfiable core [2022-11-18 18:27:01,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:27:12,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:27,824 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 376 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:28:00,251 WARN L233 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 686 DAG size of output: 560 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:28:21,353 WARN L233 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 558 DAG size of output: 558 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:28:35,070 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 576 DAG size of output: 565 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:29:17,518 WARN L233 SmtUtils]: Spent 18.63s on a formula simplification. DAG size of input: 1102 DAG size of output: 988 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:30:00,960 WARN L233 SmtUtils]: Spent 11.05s on a formula simplification. DAG size of input: 986 DAG size of output: 986 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:30:27,970 WARN L233 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 1004 DAG size of output: 993 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:30:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:28,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:28,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166888793] [2022-11-18 18:30:28,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166888793] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:30:28,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:30:28,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 39 [2022-11-18 18:30:28,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321678932] [2022-11-18 18:30:28,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:30:28,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 18:30:28,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:28,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 18:30:28,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=1126, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 18:30:28,051 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 39 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) [2022-11-18 18:30:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:29,291 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2022-11-18 18:30:29,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 18:30:29,292 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 39 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 32 [2022-11-18 18:30:29,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:29,293 INFO L225 Difference]: With dead ends: 40 [2022-11-18 18:30:29,293 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 18:30:29,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 90.0s TimeCoverageRelationStatistics Valid=468, Invalid=1338, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 18:30:29,296 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:29,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 50 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-11-18 18:30:29,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 18:30:29,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-18 18:30:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:29,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2022-11-18 18:30:29,311 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 32 [2022-11-18 18:30:29,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:29,312 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2022-11-18 18:30:29,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 39 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) [2022-11-18 18:30:29,312 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2022-11-18 18:30:29,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 18:30:29,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:29,313 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1] [2022-11-18 18:30:29,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:29,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:29,518 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:30:29,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1560106485, now seen corresponding path program 6 times [2022-11-18 18:30:29,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:29,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869462424] [2022-11-18 18:30:29,519 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:30:29,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:29,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:29,521 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:29,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 18:30:29,709 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-18 18:30:29,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-18 18:30:29,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:30:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:30:29,916 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-18 18:30:29,916 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:30:29,918 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 18:30:29,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:30,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:30,142 INFO L444 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2022-11-18 18:30:30,147 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:30:30,223 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,230 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,231 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,231 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,231 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,231 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,231 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:30:30 BoogieIcfgContainer [2022-11-18 18:30:30,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:30:30,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:30:30,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:30:30,253 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:30:30,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:25:45" (3/4) ... [2022-11-18 18:30:30,256 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-18 18:30:30,277 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,277 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,277 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,278 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,278 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,278 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,278 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-18 18:30:30,362 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:30:30,362 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:30:30,363 INFO L158 Benchmark]: Toolchain (without parser) took 285493.88ms. Allocated memory was 69.2MB in the beginning and 587.2MB in the end (delta: 518.0MB). Free memory was 51.3MB in the beginning and 320.9MB in the end (delta: -269.6MB). Peak memory consumption was 248.7MB. Max. memory is 16.1GB. [2022-11-18 18:30:30,364 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 50.6MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:30:30,364 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.79ms. Allocated memory is still 69.2MB. Free memory was 51.1MB in the beginning and 52.1MB in the end (delta: -1.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-18 18:30:30,365 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.70ms. Allocated memory is still 69.2MB. Free memory was 52.1MB in the beginning and 50.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:30:30,365 INFO L158 Benchmark]: Boogie Preprocessor took 33.48ms. Allocated memory is still 69.2MB. Free memory was 50.3MB in the beginning and 49.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:30:30,365 INFO L158 Benchmark]: RCFGBuilder took 557.42ms. Allocated memory is still 69.2MB. Free memory was 48.8MB in the beginning and 37.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:30:30,366 INFO L158 Benchmark]: TraceAbstraction took 284367.63ms. Allocated memory was 69.2MB in the beginning and 587.2MB in the end (delta: 518.0MB). Free memory was 37.0MB in the beginning and 330.4MB in the end (delta: -293.4MB). Peak memory consumption was 224.8MB. Max. memory is 16.1GB. [2022-11-18 18:30:30,366 INFO L158 Benchmark]: Witness Printer took 109.63ms. Allocated memory is still 587.2MB. Free memory was 330.4MB in the beginning and 320.9MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:30:30,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 50.6MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.79ms. Allocated memory is still 69.2MB. Free memory was 51.1MB in the beginning and 52.1MB in the end (delta: -1.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.70ms. Allocated memory is still 69.2MB. Free memory was 52.1MB in the beginning and 50.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.48ms. Allocated memory is still 69.2MB. Free memory was 50.3MB in the beginning and 49.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 557.42ms. Allocated memory is still 69.2MB. Free memory was 48.8MB in the beginning and 37.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 284367.63ms. Allocated memory was 69.2MB in the beginning and 587.2MB in the end (delta: 518.0MB). Free memory was 37.0MB in the beginning and 330.4MB in the end (delta: -293.4MB). Peak memory consumption was 224.8MB. Max. memory is 16.1GB. * Witness Printer took 109.63ms. Allocated memory is still 587.2MB. Free memory was 330.4MB in the beginning and 320.9MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. 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 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 2); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (2 - 1); [L32] const SORT_2 var_5 = 0; [L33] const SORT_2 var_10 = 1; [L34] const SORT_2 var_17 = mask_SORT_2; [L36] SORT_1 input_3; [L37] SORT_1 input_4; [L39] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L40] SORT_2 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L42] SORT_2 init_8_arg_1 = var_5; [L43] state_6 = init_8_arg_1 [L44] SORT_2 init_9_arg_1 = var_5; [L45] state_7 = init_9_arg_1 VAL [init_8_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_6=0, state_7=0, var_10=1, var_17=3, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=0, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=0, next_16_arg_1=1, state_6=0, state_7=1, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_13=0, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=0, var_14=1, var_14_arg_0=1, var_14_arg_1=1, var_14_arg_2=0, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=1, next_16_arg_1=1, state_6=1, state_7=1, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=2, var_12_arg_0=1, var_12_arg_1=1, var_13=1, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_14=1, var_14_arg_0=0, var_14_arg_1=2, var_14_arg_2=1, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=0, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=2, next_16_arg_1=1, state_6=2, state_7=1, var_10=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=2, var_12_arg_0=1, var_12_arg_1=1, var_13=2, var_13_arg_0=1, var_13_arg_1=2, var_13_arg_2=1, var_14=1, var_14_arg_0=0, var_14_arg_1=2, var_14_arg_2=1, var_17=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=0, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=0, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=2, next_16_arg_1=2, state_6=2, state_7=2, var_10=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=2, var_12_arg_0=1, var_12_arg_1=1, var_13=2, var_13_arg_0=0, var_13_arg_1=3, var_13_arg_2=2, var_14=2, var_14_arg_0=1, var_14_arg_1=2, var_14_arg_2=1, var_17=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, next_16_arg_1=2, state_6=3, state_7=2, var_10=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=2, var_12_arg_1=1, var_13=3, var_13_arg_0=1, var_13_arg_1=3, var_13_arg_2=2, var_14=2, var_14_arg_0=0, var_14_arg_1=3, var_14_arg_2=2, var_17=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=2, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=0, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=0, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, next_16_arg_1=3, state_6=3, state_7=3, var_10=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=3, var_12_arg_0=2, var_12_arg_1=1, var_13=3, var_13_arg_0=0, var_13_arg_1=4, var_13_arg_2=3, var_14=3, var_14_arg_0=1, var_14_arg_1=3, var_14_arg_2=2, var_17=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=2, var_19_arg_1=3, var_20=0, var_20_arg_0=1, var_20_arg_1=0, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 284.2s, OverallIterations: 8, TraceHistogramMax: 7, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 80 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80 mSDsluCounter, 214 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 146 IncrementalHoareTripleChecker+Unchecked, 173 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 41 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 123 SyntacticMatches, 6 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 117.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=7, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 277.6s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 222 ConstructedInterpolants, 127 QuantifiedInterpolants, 198774 SizeOfPredicates, 426 NumberOfNonLiveVariables, 859 ConjunctsInSsa, 445 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 0/320 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 proved your program to be incorrect! [2022-11-18 18:30:30,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915e2ca2-e086-4059-9493-b4ffaadd953c/bin/uautomizer-TMbwUNV5ro/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE