./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.6.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.6.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5cff07c13ebf24d520fd1d7ab9ee6db9f11fbbafad7d55d4497b4d9f5b895266 --- 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-e04fb08 [2022-11-16 12:47:16,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:47:16,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:47:16,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:47:16,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:47:16,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:47:16,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:47:16,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:47:16,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:47:16,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:47:16,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:47:16,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:47:16,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:47:16,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:47:16,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:47:16,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:47:16,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:47:16,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:47:16,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:47:16,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:47:16,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:47:16,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:47:16,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:47:16,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:47:16,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:47:16,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:47:16,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:47:16,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:47:16,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:47:16,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:47:16,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:47:16,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:47:16,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:47:16,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:47:16,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:47:16,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:47:16,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:47:16,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:47:16,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:47:16,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:47:16,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:47:16,232 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 12:47:16,267 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:47:16,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:47:16,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:47:16,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:47:16,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:47:16,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:47:16,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:47:16,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:47:16,271 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:47:16,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:47:16,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:47:16,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:47:16,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:47:16,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:47:16,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:47:16,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:47:16,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:47:16,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:47:16,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:47:16,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:47:16,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:47:16,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:47:16,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:47:16,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:47:16,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:47:16,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:47:16,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:47:16,279 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:47:16,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:47:16,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:47:16,280 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_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cff07c13ebf24d520fd1d7ab9ee6db9f11fbbafad7d55d4497b4d9f5b895266 [2022-11-16 12:47:16,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:47:16,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:47:16,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:47:16,563 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:47:16,564 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:47:16,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.6.prop1-back-serstep.c [2022-11-16 12:47:16,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/data/670f82059/dc4a9032f18d46a7a921281aca833216/FLAG633344cd6 [2022-11-16 12:47:17,645 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:47:17,650 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.6.prop1-back-serstep.c [2022-11-16 12:47:17,719 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/data/670f82059/dc4a9032f18d46a7a921281aca833216/FLAG633344cd6 [2022-11-16 12:47:18,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/data/670f82059/dc4a9032f18d46a7a921281aca833216 [2022-11-16 12:47:18,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:47:18,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:47:18,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:47:18,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:47:18,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:47:18,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:47:18" (1/1) ... [2022-11-16 12:47:18,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10501901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:18, skipping insertion in model container [2022-11-16 12:47:18,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:47:18" (1/1) ... [2022-11-16 12:47:18,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:47:18,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:47:18,930 WARN L229 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_a14a2927-0571-47c9-bdba-44032447edb1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.6.prop1-back-serstep.c[1014,1027] [2022-11-16 12:47:20,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:47:20,484 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:47:20,498 WARN L229 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_a14a2927-0571-47c9-bdba-44032447edb1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.6.prop1-back-serstep.c[1014,1027] [2022-11-16 12:47:21,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:47:21,615 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:47:21,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21 WrapperNode [2022-11-16 12:47:21,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:47:21,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:47:21,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:47:21,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:47:21,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21" (1/1) ... [2022-11-16 12:47:22,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21" (1/1) ... [2022-11-16 12:47:23,430 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28995 [2022-11-16 12:47:23,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:47:23,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:47:23,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:47:23,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:47:23,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21" (1/1) ... [2022-11-16 12:47:23,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21" (1/1) ... [2022-11-16 12:47:23,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21" (1/1) ... [2022-11-16 12:47:23,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21" (1/1) ... [2022-11-16 12:47:24,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21" (1/1) ... [2022-11-16 12:47:24,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21" (1/1) ... [2022-11-16 12:47:24,939 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21" (1/1) ... [2022-11-16 12:47:25,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21" (1/1) ... [2022-11-16 12:47:25,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:47:25,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:47:25,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:47:25,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:47:25,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21" (1/1) ... [2022-11-16 12:47:25,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:47:25,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:47:25,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:47:25,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:47:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:47:25,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:47:28,020 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:47:28,023 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:48:25,863 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:48:25,898 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:48:25,898 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:48:25,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:48:25 BoogieIcfgContainer [2022-11-16 12:48:25,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:48:25,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:48:25,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:48:25,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:48:25,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:47:18" (1/3) ... [2022-11-16 12:48:25,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e167230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:48:25, skipping insertion in model container [2022-11-16 12:48:25,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:21" (2/3) ... [2022-11-16 12:48:25,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e167230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:48:25, skipping insertion in model container [2022-11-16 12:48:25,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:48:25" (3/3) ... [2022-11-16 12:48:25,917 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lifts.6.prop1-back-serstep.c [2022-11-16 12:48:25,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:48:25,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:48:26,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:48:26,106 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;@34c3198c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:48:26,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:48:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 4808 states, 4806 states have (on average 1.6662505201831044) internal successors, (8008), 4807 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:26,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2022-11-16 12:48:26,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:26,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:26,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:26,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash 765635153, now seen corresponding path program 1 times [2022-11-16 12:48:26,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:26,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422916456] [2022-11-16 12:48:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:26,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:30,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:30,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:30,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422916456] [2022-11-16 12:48:30,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422916456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:30,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:30,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:48:30,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766102342] [2022-11-16 12:48:30,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:30,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:48:30,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:30,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:48:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:48:30,959 INFO L87 Difference]: Start difference. First operand has 4808 states, 4806 states have (on average 1.6662505201831044) internal successors, (8008), 4807 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 197.25) internal successors, (789), 4 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:32,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:48:34,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:48:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:34,447 INFO L93 Difference]: Finished difference Result 15586 states and 25972 transitions. [2022-11-16 12:48:34,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:48:34,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.25) internal successors, (789), 4 states have internal predecessors, (789), 0 states have call successors, (0), 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 789 [2022-11-16 12:48:34,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:34,499 INFO L225 Difference]: With dead ends: 15586 [2022-11-16 12:48:34,500 INFO L226 Difference]: Without dead ends: 10780 [2022-11-16 12:48:34,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:48:34,516 INFO L413 NwaCegarLoop]: 9960 mSDtfsCounter, 23982 mSDsluCounter, 11913 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23982 SdHoareTripleChecker+Valid, 21873 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:34,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23982 Valid, 21873 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 12:48:34,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10780 states. [2022-11-16 12:48:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10780 to 4806. [2022-11-16 12:48:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4806 states, 4805 states have (on average 1.6657648283038502) internal successors, (8004), 4805 states have internal predecessors, (8004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 8004 transitions. [2022-11-16 12:48:34,751 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 8004 transitions. Word has length 789 [2022-11-16 12:48:34,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:34,755 INFO L495 AbstractCegarLoop]: Abstraction has 4806 states and 8004 transitions. [2022-11-16 12:48:34,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.25) internal successors, (789), 4 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 8004 transitions. [2022-11-16 12:48:34,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2022-11-16 12:48:34,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:34,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:34,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:48:34,779 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:34,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:34,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2033384381, now seen corresponding path program 1 times [2022-11-16 12:48:34,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:34,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049358658] [2022-11-16 12:48:34,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:34,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:38,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:38,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049358658] [2022-11-16 12:48:38,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049358658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:38,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:38,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:48:38,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210915351] [2022-11-16 12:48:38,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:38,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:48:38,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:38,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:48:38,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:48:38,469 INFO L87 Difference]: Start difference. First operand 4806 states and 8004 transitions. Second operand has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:40,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:48:42,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:48:42,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:42,884 INFO L93 Difference]: Finished difference Result 19205 states and 31994 transitions. [2022-11-16 12:48:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:48:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 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 790 [2022-11-16 12:48:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:42,949 INFO L225 Difference]: With dead ends: 19205 [2022-11-16 12:48:42,949 INFO L226 Difference]: Without dead ends: 14401 [2022-11-16 12:48:42,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:48:42,960 INFO L413 NwaCegarLoop]: 9954 mSDtfsCounter, 21243 mSDsluCounter, 15993 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21243 SdHoareTripleChecker+Valid, 25947 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:42,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21243 Valid, 25947 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 12:48:42,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14401 states. [2022-11-16 12:48:43,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14401 to 5981. [2022-11-16 12:48:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5981 states, 5980 states have (on average 1.6657190635451504) internal successors, (9961), 5980 states have internal predecessors, (9961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5981 states to 5981 states and 9961 transitions. [2022-11-16 12:48:43,232 INFO L78 Accepts]: Start accepts. Automaton has 5981 states and 9961 transitions. Word has length 790 [2022-11-16 12:48:43,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:43,233 INFO L495 AbstractCegarLoop]: Abstraction has 5981 states and 9961 transitions. [2022-11-16 12:48:43,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:43,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5981 states and 9961 transitions. [2022-11-16 12:48:43,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3992 [2022-11-16 12:48:43,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:43,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:43,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:48:43,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:43,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:43,363 INFO L85 PathProgramCache]: Analyzing trace with hash -244550656, now seen corresponding path program 1 times [2022-11-16 12:48:43,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:43,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452049131] [2022-11-16 12:48:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:43,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:44,766 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:48:44,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410335241] [2022-11-16 12:48:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:44,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:44,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:44,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:44,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:49:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:02,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 35713 conjuncts, 143 conjunts are in the unsatisfiable core [2022-11-16 12:49:02,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:49:30,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:30,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452049131] [2022-11-16 12:49:30,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:49:30,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410335241] [2022-11-16 12:49:30,610 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-16 12:49:30,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:49:30,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:49:30,812 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-16 12:49:30,815 INFO L158 Benchmark]: Toolchain (without parser) took 132658.67ms. Allocated memory was 119.5MB in the beginning and 4.9GB in the end (delta: 4.8GB). Free memory was 80.8MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-16 12:49:30,815 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 79.7MB. Free memory was 31.2MB in the beginning and 31.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:49:30,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3458.85ms. Allocated memory was 119.5MB in the beginning and 608.2MB in the end (delta: 488.6MB). Free memory was 80.3MB in the beginning and 420.8MB in the end (delta: -340.5MB). Peak memory consumption was 211.5MB. Max. memory is 16.1GB. [2022-11-16 12:49:30,816 INFO L158 Benchmark]: Boogie Procedure Inliner took 1814.39ms. Allocated memory is still 608.2MB. Free memory was 420.8MB in the beginning and 270.8MB in the end (delta: 149.9MB). Peak memory consumption was 194.0MB. Max. memory is 16.1GB. [2022-11-16 12:49:30,816 INFO L158 Benchmark]: Boogie Preprocessor took 1931.07ms. Allocated memory was 608.2MB in the beginning and 1.6GB in the end (delta: 1.0GB). Free memory was 270.8MB in the beginning and 1.2GB in the end (delta: -973.1MB). Peak memory consumption was 98.6MB. Max. memory is 16.1GB. [2022-11-16 12:49:30,816 INFO L158 Benchmark]: RCFGBuilder took 60542.59ms. Allocated memory was 1.6GB in the beginning and 4.0GB in the end (delta: 2.3GB). Free memory was 1.2GB in the beginning and 3.0GB in the end (delta: -1.8GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2022-11-16 12:49:30,817 INFO L158 Benchmark]: TraceAbstraction took 64904.49ms. Allocated memory was 4.0GB in the beginning and 4.9GB in the end (delta: 945.8MB). Free memory was 3.0GB in the beginning and 3.7GB in the end (delta: -671.5MB). Peak memory consumption was 275.8MB. Max. memory is 16.1GB. [2022-11-16 12:49:30,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 79.7MB. Free memory was 31.2MB in the beginning and 31.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3458.85ms. Allocated memory was 119.5MB in the beginning and 608.2MB in the end (delta: 488.6MB). Free memory was 80.3MB in the beginning and 420.8MB in the end (delta: -340.5MB). Peak memory consumption was 211.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 1814.39ms. Allocated memory is still 608.2MB. Free memory was 420.8MB in the beginning and 270.8MB in the end (delta: 149.9MB). Peak memory consumption was 194.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 1931.07ms. Allocated memory was 608.2MB in the beginning and 1.6GB in the end (delta: 1.0GB). Free memory was 270.8MB in the beginning and 1.2GB in the end (delta: -973.1MB). Peak memory consumption was 98.6MB. Max. memory is 16.1GB. * RCFGBuilder took 60542.59ms. Allocated memory was 1.6GB in the beginning and 4.0GB in the end (delta: 2.3GB). Free memory was 1.2GB in the beginning and 3.0GB in the end (delta: -1.8GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * TraceAbstraction took 64904.49ms. Allocated memory was 4.0GB in the beginning and 4.9GB in the end (delta: 945.8MB). Free memory was 3.0GB in the beginning and 3.7GB in the end (delta: -671.5MB). Peak memory consumption was 275.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-16 12:49:30,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.6.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5cff07c13ebf24d520fd1d7ab9ee6db9f11fbbafad7d55d4497b4d9f5b895266 --- 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-e04fb08 [2022-11-16 12:49:33,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:49:33,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:49:33,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:49:33,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:49:33,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:49:33,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:49:33,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:49:33,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:49:33,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:49:33,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:49:33,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:49:33,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:49:33,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:49:33,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:49:33,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:49:33,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:49:33,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:49:33,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:49:33,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:49:33,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:49:33,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:49:33,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:49:33,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:49:33,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:49:33,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:49:33,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:49:33,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:49:33,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:49:33,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:49:33,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:49:33,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:49:33,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:49:33,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:49:33,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:49:33,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:49:33,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:49:33,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:49:33,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:49:33,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:49:33,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:49:33,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-16 12:49:33,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:49:33,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:49:33,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:49:33,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:49:33,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:49:33,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:49:33,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:49:33,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:49:33,432 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:49:33,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:49:33,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:49:33,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:49:33,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:49:33,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:49:33,433 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:49:33,434 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:49:33,434 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:49:33,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:49:33,434 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:49:33,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:49:33,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:49:33,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:49:33,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:49:33,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:49:33,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:49:33,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:49:33,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:49:33,440 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:49:33,440 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:49:33,441 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:49:33,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:49:33,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:49:33,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:49:33,442 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cff07c13ebf24d520fd1d7ab9ee6db9f11fbbafad7d55d4497b4d9f5b895266 [2022-11-16 12:49:33,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:49:33,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:49:33,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:49:33,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:49:33,851 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:49:33,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.6.prop1-back-serstep.c [2022-11-16 12:49:33,924 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/data/b95ffad95/584775d200a845e6b24a0e008a8aac7a/FLAG78ceb12e1 [2022-11-16 12:49:35,064 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:49:35,065 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.6.prop1-back-serstep.c [2022-11-16 12:49:35,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/data/b95ffad95/584775d200a845e6b24a0e008a8aac7a/FLAG78ceb12e1 [2022-11-16 12:49:35,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/data/b95ffad95/584775d200a845e6b24a0e008a8aac7a [2022-11-16 12:49:35,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:49:35,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:49:35,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:49:35,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:49:35,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:49:35,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:49:35" (1/1) ... [2022-11-16 12:49:35,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7832962d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:35, skipping insertion in model container [2022-11-16 12:49:35,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:49:35" (1/1) ... [2022-11-16 12:49:35,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:49:35,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:49:36,049 WARN L229 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_a14a2927-0571-47c9-bdba-44032447edb1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.6.prop1-back-serstep.c[1014,1027] [2022-11-16 12:49:37,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:49:37,656 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:49:37,678 WARN L229 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_a14a2927-0571-47c9-bdba-44032447edb1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lifts.6.prop1-back-serstep.c[1014,1027] [2022-11-16 12:49:38,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:49:38,664 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:49:38,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38 WrapperNode [2022-11-16 12:49:38,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:49:38,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:49:38,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:49:38,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:49:38,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38" (1/1) ... [2022-11-16 12:49:38,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38" (1/1) ... [2022-11-16 12:49:39,603 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 17802 [2022-11-16 12:49:39,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:49:39,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:49:39,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:49:39,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:49:39,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38" (1/1) ... [2022-11-16 12:49:39,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38" (1/1) ... [2022-11-16 12:49:40,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38" (1/1) ... [2022-11-16 12:49:40,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38" (1/1) ... [2022-11-16 12:49:40,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38" (1/1) ... [2022-11-16 12:49:40,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38" (1/1) ... [2022-11-16 12:49:40,368 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38" (1/1) ... [2022-11-16 12:49:40,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38" (1/1) ... [2022-11-16 12:49:40,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:49:40,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:49:40,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:49:40,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:49:40,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38" (1/1) ... [2022-11-16 12:49:40,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:49:40,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:49:40,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:49:40,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:49:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:49:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:49:43,269 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:49:43,272 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:51:52,785 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:51:52,793 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:51:52,793 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:51:52,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:51:52 BoogieIcfgContainer [2022-11-16 12:51:52,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:51:52,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:51:52,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:51:52,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:51:52,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:49:35" (1/3) ... [2022-11-16 12:51:52,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d888fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:51:52, skipping insertion in model container [2022-11-16 12:51:52,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:38" (2/3) ... [2022-11-16 12:51:52,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d888fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:51:52, skipping insertion in model container [2022-11-16 12:51:52,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:51:52" (3/3) ... [2022-11-16 12:51:52,805 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lifts.6.prop1-back-serstep.c [2022-11-16 12:51:52,824 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:51:52,825 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:51:52,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:51:52,882 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;@2be669aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:51:52,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:51:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:52,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:51:52,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:51:52,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:51:52,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:51:52,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:52,900 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-16 12:51:52,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:51:52,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585106846] [2022-11-16 12:51:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:52,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:51:52,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:51:52,923 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:51:52,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:51:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:56,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:51:56,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:56,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:51:56,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:51:56,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585106846] [2022-11-16 12:51:56,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585106846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:56,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:56,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:51:56,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740301216] [2022-11-16 12:51:56,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:56,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:51:56,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:51:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:51:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:51:56,490 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:59,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:51:59,964 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:51:59,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:51:59,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:00,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:00,168 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 5 at de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.undoMap(ScopedHashMap.java:97) at de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.endScope(ScopedHashMap.java:127) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:101) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-16 12:52:00,171 INFO L158 Benchmark]: Toolchain (without parser) took 144849.93ms. Allocated memory was 65.0MB in the beginning and 2.8GB in the end (delta: 2.8GB). Free memory was 33.9MB in the beginning and 2.5GB in the end (delta: -2.5GB). Peak memory consumption was 380.5MB. Max. memory is 16.1GB. [2022-11-16 12:52:00,172 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 52.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:52:00,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3341.80ms. Allocated memory was 65.0MB in the beginning and 285.2MB in the end (delta: 220.2MB). Free memory was 33.6MB in the beginning and 105.3MB in the end (delta: -71.6MB). Peak memory consumption was 160.7MB. Max. memory is 16.1GB. [2022-11-16 12:52:00,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 937.51ms. Allocated memory was 285.2MB in the beginning and 700.4MB in the end (delta: 415.2MB). Free memory was 105.3MB in the beginning and 483.7MB in the end (delta: -378.4MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. [2022-11-16 12:52:00,174 INFO L158 Benchmark]: Boogie Preprocessor took 893.12ms. Allocated memory is still 700.4MB. Free memory was 483.7MB in the beginning and 442.8MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2022-11-16 12:52:00,175 INFO L158 Benchmark]: RCFGBuilder took 132297.26ms. Allocated memory was 700.4MB in the beginning and 2.8GB in the end (delta: 2.1GB). Free memory was 442.8MB in the beginning and 1.9GB in the end (delta: -1.4GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-16 12:52:00,175 INFO L158 Benchmark]: TraceAbstraction took 7372.63ms. Allocated memory is still 2.8GB. Free memory was 1.9GB in the beginning and 2.5GB in the end (delta: -658.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:52:00,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 52.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3341.80ms. Allocated memory was 65.0MB in the beginning and 285.2MB in the end (delta: 220.2MB). Free memory was 33.6MB in the beginning and 105.3MB in the end (delta: -71.6MB). Peak memory consumption was 160.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 937.51ms. Allocated memory was 285.2MB in the beginning and 700.4MB in the end (delta: 415.2MB). Free memory was 105.3MB in the beginning and 483.7MB in the end (delta: -378.4MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 893.12ms. Allocated memory is still 700.4MB. Free memory was 483.7MB in the beginning and 442.8MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * RCFGBuilder took 132297.26ms. Allocated memory was 700.4MB in the beginning and 2.8GB in the end (delta: 2.1GB). Free memory was 442.8MB in the beginning and 1.9GB in the end (delta: -1.4GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * TraceAbstraction took 7372.63ms. Allocated memory is still 2.8GB. Free memory was 1.9GB in the beginning and 2.5GB in the end (delta: -658.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 5 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 5: de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.undoMap(ScopedHashMap.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-16 12:52:00,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14a2927-0571-47c9-bdba-44032447edb1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 1 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 5