./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/nested_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/nested_1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7d46306d0f449fc697e3921b4f35c60335f25019c8462cefcaf92538159e3d14 --- 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-b5237d8 [2022-11-21 16:41:15,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:41:15,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:41:16,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:41:16,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:41:16,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:41:16,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:41:16,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:41:16,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:41:16,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:41:16,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:41:16,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:41:16,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:41:16,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:41:16,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:41:16,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:41:16,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:41:16,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:41:16,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:41:16,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:41:16,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:41:16,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:41:16,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:41:16,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:41:16,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:41:16,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:41:16,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:41:16,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:41:16,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:41:16,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:41:16,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:41:16,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:41:16,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:41:16,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:41:16,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:41:16,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:41:16,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:41:16,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:41:16,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:41:16,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:41:16,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:41:16,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:41:16,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:41:16,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:41:16,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:41:16,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:41:16,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:41:16,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:41:16,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:41:16,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:41:16,126 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:41:16,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:41:16,127 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:41:16,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:41:16,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:41:16,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:41:16,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:41:16,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:41:16,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:41:16,129 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:41:16,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:41:16,129 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:41:16,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:41:16,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:41:16,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:41:16,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:41:16,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:41:16,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:41:16,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:41:16,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:41:16,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:41:16,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:41:16,133 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:41:16,133 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:41:16,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:41:16,134 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_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d46306d0f449fc697e3921b4f35c60335f25019c8462cefcaf92538159e3d14 [2022-11-21 16:41:16,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:41:16,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:41:16,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:41:16,426 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:41:16,427 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:41:16,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/loop-acceleration/nested_1-1.c [2022-11-21 16:41:19,460 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:41:19,641 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:41:19,641 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/sv-benchmarks/c/loop-acceleration/nested_1-1.c [2022-11-21 16:41:19,647 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/data/f06874276/c0c5803112564581b848c4445745de7e/FLAG0e76c5df9 [2022-11-21 16:41:19,664 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/data/f06874276/c0c5803112564581b848c4445745de7e [2022-11-21 16:41:19,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:41:19,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:41:19,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:41:19,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:41:19,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:41:19,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473639fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19, skipping insertion in model container [2022-11-21 16:41:19,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:41:19,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:41:19,836 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/sv-benchmarks/c/loop-acceleration/nested_1-1.c[322,335] [2022-11-21 16:41:19,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:41:19,859 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:41:19,871 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/sv-benchmarks/c/loop-acceleration/nested_1-1.c[322,335] [2022-11-21 16:41:19,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:41:19,887 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:41:19,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19 WrapperNode [2022-11-21 16:41:19,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:41:19,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:41:19,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:41:19,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:41:19,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,913 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-11-21 16:41:19,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:41:19,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:41:19,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:41:19,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:41:19,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,934 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:41:19,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:41:19,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:41:19,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:41:19,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19" (1/1) ... [2022-11-21 16:41:19,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:41:19,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:41:19,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:41:19,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:41:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:41:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:41:20,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:41:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:41:20,094 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:41:20,097 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:41:20,292 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:41:20,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:41:20,311 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 16:41:20,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:41:20 BoogieIcfgContainer [2022-11-21 16:41:20,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:41:20,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:41:20,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:41:20,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:41:20,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:41:19" (1/3) ... [2022-11-21 16:41:20,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c1b33b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:41:20, skipping insertion in model container [2022-11-21 16:41:20,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:41:19" (2/3) ... [2022-11-21 16:41:20,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c1b33b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:41:20, skipping insertion in model container [2022-11-21 16:41:20,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:41:20" (3/3) ... [2022-11-21 16:41:20,333 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_1-1.c [2022-11-21 16:41:20,353 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:41:20,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:41:20,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:41:20,421 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;@43aa339d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:41:20,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:41:20,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-11-21 16:41:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 16:41:20,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:20,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 16:41:20,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:41:20,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:20,442 INFO L85 PathProgramCache]: Analyzing trace with hash 889646744, now seen corresponding path program 1 times [2022-11-21 16:41:20,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:20,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557645274] [2022-11-21 16:41:20,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:20,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:20,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:20,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557645274] [2022-11-21 16:41:20,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557645274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:20,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:20,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:41:20,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698536398] [2022-11-21 16:41:20,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:20,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:41:20,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:20,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:41:20,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:41:20,889 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-21 16:41:20,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:20,943 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2022-11-21 16:41:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:41:20,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-21 16:41:20,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:20,953 INFO L225 Difference]: With dead ends: 27 [2022-11-21 16:41:20,958 INFO L226 Difference]: Without dead ends: 12 [2022-11-21 16:41:20,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:41:20,968 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:20,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:41:20,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-21 16:41:20,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2022-11-21 16:41:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-11-21 16:41:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-11-21 16:41:21,030 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2022-11-21 16:41:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:21,030 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-11-21 16:41:21,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-21 16:41:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-11-21 16:41:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 16:41:21,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:21,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:21,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:41:21,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:41:21,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:21,033 INFO L85 PathProgramCache]: Analyzing trace with hash 704531011, now seen corresponding path program 1 times [2022-11-21 16:41:21,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:21,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075861905] [2022-11-21 16:41:21,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:21,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:21,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:21,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:21,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075861905] [2022-11-21 16:41:21,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075861905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:21,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:21,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:41:21,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528882958] [2022-11-21 16:41:21,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:21,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:41:21,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:21,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:41:21,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:41:21,160 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-21 16:41:21,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:21,171 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2022-11-21 16:41:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:41:21,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) Word has length 9 [2022-11-21 16:41:21,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:21,172 INFO L225 Difference]: With dead ends: 18 [2022-11-21 16:41:21,172 INFO L226 Difference]: Without dead ends: 11 [2022-11-21 16:41:21,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:41:21,174 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:21,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:41:21,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-21 16:41:21,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-21 16:41:21,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-21 16:41:21,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2022-11-21 16:41:21,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:21,179 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-21 16:41:21,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-21 16:41:21,180 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-21 16:41:21,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 16:41:21,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:21,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:21,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:41:21,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:41:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:21,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1982141191, now seen corresponding path program 1 times [2022-11-21 16:41:21,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:21,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188160170] [2022-11-21 16:41:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:21,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:21,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:21,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188160170] [2022-11-21 16:41:21,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188160170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:41:21,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372789763] [2022-11-21 16:41:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:21,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:21,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:41:21,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:41:21,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:41:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:21,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:41:21,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:21,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:41:21,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372789763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:21,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:41:21,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2022-11-21 16:41:21,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80119760] [2022-11-21 16:41:21,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:21,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:41:21,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:21,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:41:21,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:41:21,620 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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) [2022-11-21 16:41:21,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:21,801 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2022-11-21 16:41:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:41:21,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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 10 [2022-11-21 16:41:21,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:21,803 INFO L225 Difference]: With dead ends: 35 [2022-11-21 16:41:21,803 INFO L226 Difference]: Without dead ends: 27 [2022-11-21 16:41:21,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:41:21,805 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:21,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 30 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:41:21,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-21 16:41:21,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-21 16:41:21,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 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) [2022-11-21 16:41:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-11-21 16:41:21,815 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 10 [2022-11-21 16:41:21,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:21,816 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-11-21 16:41:21,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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) [2022-11-21 16:41:21,816 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-11-21 16:41:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-21 16:41:21,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:21,817 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:21,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:41:22,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:22,023 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:41:22,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:22,024 INFO L85 PathProgramCache]: Analyzing trace with hash -738026408, now seen corresponding path program 2 times [2022-11-21 16:41:22,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:22,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315547267] [2022-11-21 16:41:22,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:22,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-21 16:41:22,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:22,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315547267] [2022-11-21 16:41:22,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315547267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:41:22,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350452823] [2022-11-21 16:41:22,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:41:22,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:22,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:41:22,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:41:22,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:41:22,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:41:22,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:41:22,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:41:22,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-21 16:41:22,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:22,377 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-21 16:41:22,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350452823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:22,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:41:22,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-21 16:41:22,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335706685] [2022-11-21 16:41:22,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:22,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:41:22,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:22,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:41:22,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:41:22,381 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:22,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:22,466 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2022-11-21 16:41:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:41:22,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-21 16:41:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:22,468 INFO L225 Difference]: With dead ends: 64 [2022-11-21 16:41:22,468 INFO L226 Difference]: Without dead ends: 43 [2022-11-21 16:41:22,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:41:22,470 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:22,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:41:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-21 16:41:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-21 16:41:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 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) [2022-11-21 16:41:22,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-11-21 16:41:22,485 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 26 [2022-11-21 16:41:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:22,485 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-11-21 16:41:22,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:22,486 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-11-21 16:41:22,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-21 16:41:22,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:22,487 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:22,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:41:22,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:22,693 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:41:22,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash -294987944, now seen corresponding path program 3 times [2022-11-21 16:41:22,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:22,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445480307] [2022-11-21 16:41:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 151 proven. 21 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-11-21 16:41:23,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:23,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445480307] [2022-11-21 16:41:23,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445480307] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:41:23,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098316164] [2022-11-21 16:41:23,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:41:23,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:23,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:41:23,115 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:41:23,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:41:23,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-21 16:41:23,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:41:23,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 16:41:23,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 154 proven. 21 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-11-21 16:41:23,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 154 proven. 21 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-11-21 16:41:23,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098316164] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:23,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:41:23,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-11-21 16:41:23,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501866014] [2022-11-21 16:41:23,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:23,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 16:41:23,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:23,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 16:41:23,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:41:23,476 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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) [2022-11-21 16:41:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:23,659 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2022-11-21 16:41:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:41:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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 42 [2022-11-21 16:41:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:23,663 INFO L225 Difference]: With dead ends: 92 [2022-11-21 16:41:23,663 INFO L226 Difference]: Without dead ends: 59 [2022-11-21 16:41:23,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:41:23,665 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:23,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:41:23,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-21 16:41:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-21 16:41:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2022-11-21 16:41:23,699 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 42 [2022-11-21 16:41:23,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:23,699 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2022-11-21 16:41:23,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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) [2022-11-21 16:41:23,700 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2022-11-21 16:41:23,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-21 16:41:23,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:23,704 INFO L195 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:23,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:41:23,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:23,910 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:41:23,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1228631464, now seen corresponding path program 4 times [2022-11-21 16:41:23,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:23,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993625542] [2022-11-21 16:41:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:23,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-21 16:41:24,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:24,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993625542] [2022-11-21 16:41:24,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993625542] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:41:24,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898111530] [2022-11-21 16:41:24,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:41:24,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:24,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:41:24,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:41:24,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:41:24,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:41:24,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:41:24,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 16:41:24,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-21 16:41:24,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 30 proven. 752 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-21 16:41:25,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898111530] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:25,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:41:25,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 23 [2022-11-21 16:41:25,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031562169] [2022-11-21 16:41:25,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:25,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 16:41:25,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:25,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 16:41:25,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2022-11-21 16:41:25,045 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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) [2022-11-21 16:41:26,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:26,549 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2022-11-21 16:41:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 16:41:26,549 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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 58 [2022-11-21 16:41:26,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:26,551 INFO L225 Difference]: With dead ends: 141 [2022-11-21 16:41:26,551 INFO L226 Difference]: Without dead ends: 137 [2022-11-21 16:41:26,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=332, Invalid=598, Unknown=0, NotChecked=0, Total=930 [2022-11-21 16:41:26,552 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 105 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:26,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 89 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:41:26,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-21 16:41:26,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-11-21 16:41:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0808823529411764) internal successors, (147), 136 states have internal predecessors, (147), 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) [2022-11-21 16:41:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2022-11-21 16:41:26,629 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 58 [2022-11-21 16:41:26,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:26,629 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2022-11-21 16:41:26,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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) [2022-11-21 16:41:26,630 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2022-11-21 16:41:26,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-21 16:41:26,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:26,638 INFO L195 NwaCegarLoop]: trace histogram [100, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:26,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:41:26,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:26,844 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:41:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1191832584, now seen corresponding path program 5 times [2022-11-21 16:41:26,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:26,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239532260] [2022-11-21 16:41:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:26,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:27,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6095 backedges. 0 proven. 5545 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-21 16:41:27,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:27,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239532260] [2022-11-21 16:41:27,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239532260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:41:27,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320679672] [2022-11-21 16:41:27,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 16:41:27,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:27,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:41:27,697 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:41:27,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:41:32,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2022-11-21 16:41:32,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:41:32,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-21 16:41:32,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6095 backedges. 0 proven. 5600 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-21 16:41:33,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6095 backedges. 0 proven. 5545 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-21 16:41:33,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320679672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:33,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:41:33,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23, 13] total 35 [2022-11-21 16:41:33,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967630263] [2022-11-21 16:41:33,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:33,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-21 16:41:33,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:33,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-21 16:41:33,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2022-11-21 16:41:33,770 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand has 35 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 35 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:41,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:41,343 INFO L93 Difference]: Finished difference Result 297 states and 330 transitions. [2022-11-21 16:41:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:41:41,345 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 35 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-11-21 16:41:41,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:41,347 INFO L225 Difference]: With dead ends: 297 [2022-11-21 16:41:41,347 INFO L226 Difference]: Without dead ends: 293 [2022-11-21 16:41:41,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=690, Invalid=1290, Unknown=0, NotChecked=0, Total=1980 [2022-11-21 16:41:41,349 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 122 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:41,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 298 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 16:41:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-11-21 16:41:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2022-11-21 16:41:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.0787671232876712) internal successors, (315), 292 states have internal predecessors, (315), 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) [2022-11-21 16:41:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 315 transitions. [2022-11-21 16:41:41,424 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 315 transitions. Word has length 136 [2022-11-21 16:41:41,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:41,424 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 315 transitions. [2022-11-21 16:41:41,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 35 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:41,425 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 315 transitions. [2022-11-21 16:41:41,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-21 16:41:41,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:41,428 INFO L195 NwaCegarLoop]: trace histogram [220, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:41,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:41:41,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:41,637 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:41:41,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1761742648, now seen corresponding path program 6 times [2022-11-21 16:41:41,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:41,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544484011] [2022-11-21 16:41:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:41,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 29645 backedges. 0 proven. 28435 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-21 16:41:44,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:44,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544484011] [2022-11-21 16:41:44,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544484011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:41:44,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286447895] [2022-11-21 16:41:44,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 16:41:44,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:44,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:41:44,239 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:41:44,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:41:46,349 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2022-11-21 16:41:46,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:41:46,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:41:46,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 29645 backedges. 2584 proven. 0 refuted. 0 times theorem prover too weak. 27061 trivial. 0 not checked. [2022-11-21 16:41:46,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:41:46,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286447895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:46,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:41:46,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [25] total 29 [2022-11-21 16:41:46,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685612730] [2022-11-21 16:41:46,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:46,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:41:46,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:46,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:41:46,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2022-11-21 16:41:46,774 INFO L87 Difference]: Start difference. First operand 293 states and 315 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:47,044 INFO L93 Difference]: Finished difference Result 293 states and 315 transitions. [2022-11-21 16:41:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:41:47,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2022-11-21 16:41:47,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:47,045 INFO L225 Difference]: With dead ends: 293 [2022-11-21 16:41:47,045 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 16:41:47,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-11-21 16:41:47,047 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:47,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:41:47,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 16:41:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 16:41:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-21 16:41:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 16:41:47,049 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 292 [2022-11-21 16:41:47,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:47,049 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 16:41:47,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 16:41:47,049 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 16:41:47,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 16:41:47,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-21 16:41:47,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-21 16:41:47,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-21 16:41:52,763 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-21 16:41:52,763 INFO L895 garLoopResultBuilder]: At program point L19-2(lines 19 21) the Hoare annotation is: (or (and (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) (< (mod (+ 4294967295 |ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-11-21 16:41:52,763 INFO L899 garLoopResultBuilder]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2022-11-21 16:41:52,764 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-21 16:41:52,764 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-21 16:41:52,764 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-21 16:41:52,764 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-21 16:41:52,764 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-11-21 16:41:52,764 INFO L895 garLoopResultBuilder]: At program point L16-2(lines 16 24) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (< (mod (+ 4294967295 |ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) [2022-11-21 16:41:52,764 INFO L899 garLoopResultBuilder]: For program point L16-3(lines 16 24) no Hoare annotation was computed. [2022-11-21 16:41:52,765 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 27) no Hoare annotation was computed. [2022-11-21 16:41:52,765 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-11-21 16:41:52,765 INFO L902 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2022-11-21 16:41:52,769 INFO L444 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2022-11-21 16:41:52,771 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:41:52,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:41:52 BoogieIcfgContainer [2022-11-21 16:41:52,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:41:52,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:41:52,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:41:52,787 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:41:52,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:41:20" (3/4) ... [2022-11-21 16:41:52,791 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:41:52,801 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-21 16:41:52,801 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-21 16:41:52,801 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 16:41:52,802 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:41:52,832 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:41:52,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:41:52,833 INFO L158 Benchmark]: Toolchain (without parser) took 33165.15ms. Allocated memory was 199.2MB in the beginning and 239.1MB in the end (delta: 39.8MB). Free memory was 154.4MB in the beginning and 163.5MB in the end (delta: -9.0MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2022-11-21 16:41:52,833 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 136.3MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:41:52,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.48ms. Allocated memory is still 199.2MB. Free memory was 154.4MB in the beginning and 144.5MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 16:41:52,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.05ms. Allocated memory is still 199.2MB. Free memory was 144.5MB in the beginning and 142.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:41:52,834 INFO L158 Benchmark]: Boogie Preprocessor took 29.84ms. Allocated memory is still 199.2MB. Free memory was 142.8MB in the beginning and 141.9MB in the end (delta: 990.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:41:52,835 INFO L158 Benchmark]: RCFGBuilder took 368.66ms. Allocated memory is still 199.2MB. Free memory was 141.9MB in the beginning and 132.4MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 16:41:52,835 INFO L158 Benchmark]: TraceAbstraction took 32470.37ms. Allocated memory was 199.2MB in the beginning and 239.1MB in the end (delta: 39.8MB). Free memory was 131.4MB in the beginning and 165.6MB in the end (delta: -34.2MB). Peak memory consumption was 111.2MB. Max. memory is 16.1GB. [2022-11-21 16:41:52,836 INFO L158 Benchmark]: Witness Printer took 45.61ms. Allocated memory is still 239.1MB. Free memory was 165.6MB in the beginning and 163.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:41:52,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 136.3MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.48ms. Allocated memory is still 199.2MB. Free memory was 154.4MB in the beginning and 144.5MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.05ms. Allocated memory is still 199.2MB. Free memory was 144.5MB in the beginning and 142.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.84ms. Allocated memory is still 199.2MB. Free memory was 142.8MB in the beginning and 141.9MB in the end (delta: 990.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 368.66ms. Allocated memory is still 199.2MB. Free memory was 141.9MB in the beginning and 132.4MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 32470.37ms. Allocated memory was 199.2MB in the beginning and 239.1MB in the end (delta: 39.8MB). Free memory was 131.4MB in the beginning and 165.6MB in the end (delta: -34.2MB). Peak memory consumption was 111.2MB. Max. memory is 16.1GB. * Witness Printer took 45.61ms. Allocated memory is still 239.1MB. Free memory was 165.6MB in the beginning and 163.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.4s, OverallIterations: 8, TraceHistogramMax: 220, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 258 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 258 mSDsluCounter, 552 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 457 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1200 IncrementalHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 95 mSDtfsCounter, 1200 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 930 GetRequests, 782 SyntacticMatches, 4 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=7, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 269 NumberOfFragments, 33 HoareAnnotationTreeSize, 3 FomulaSimplifications, 555 FormulaSimplificationTreeSizeReduction, 2.6s HoareSimplificationTime, 3 FomulaSimplificationsInter, 7159 FormulaSimplificationTreeSizeReductionInter, 2.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 7.2s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 1143 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 1396 ConstructedInterpolants, 0 QuantifiedInterpolants, 6614 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1005 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 34419/81896 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (x % 4294967296 < 268435455 && (4294967295 + x) % 4294967296 < 268435455) || x == 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (y == 0 && x == 0) || (4294967295 + x) % 4294967296 < 268435455 RESULT: Ultimate proved your program to be correct! [2022-11-21 16:41:52,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb43021-7504-44b0-9ac8-b1d1756eb9d4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE