./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal134.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal134.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dbdef60eb405c8b5c0f4d4687b0fe4fcf163ce4c2c7c0e4ccd67bd1ccf5af892 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:54:18,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:54:18,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:54:18,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:54:18,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:54:18,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:54:18,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:54:18,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:54:18,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:54:18,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:54:18,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:54:18,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:54:18,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:54:18,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:54:18,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:54:18,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:54:18,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:54:18,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:54:18,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:54:18,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:54:18,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:54:18,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:54:18,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:54:18,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:54:18,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:54:18,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:54:18,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:54:18,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:54:18,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:54:18,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:54:18,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:54:18,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:54:18,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:54:18,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:54:18,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:54:18,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:54:18,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:54:18,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:54:18,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:54:18,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:54:18,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:54:18,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:54:18,643 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:54:18,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:54:18,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:54:18,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:54:18,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:54:18,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:54:18,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:54:18,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:54:18,651 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:54:18,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:54:18,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:54:18,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:54:18,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:54:18,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:54:18,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:54:18,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:54:18,654 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:54:18,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:54:18,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:54:18,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:54:18,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:54:18,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:54:18,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:54:18,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:54:18,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:54:18,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:54:18,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:54:18,658 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:54:18,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:54:18,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:54:18,659 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_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdef60eb405c8b5c0f4d4687b0fe4fcf163ce4c2c7c0e4ccd67bd1ccf5af892 [2022-11-02 20:54:18,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:54:19,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:54:19,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:54:19,043 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:54:19,044 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:54:19,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal134.c [2022-11-02 20:54:19,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/data/aa49f2279/ebfe0a7003464396940492aa6cb09253/FLAGb557e3543 [2022-11-02 20:54:20,262 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:54:20,263 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal134.c [2022-11-02 20:54:20,334 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/data/aa49f2279/ebfe0a7003464396940492aa6cb09253/FLAGb557e3543 [2022-11-02 20:54:20,560 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/data/aa49f2279/ebfe0a7003464396940492aa6cb09253 [2022-11-02 20:54:20,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:54:20,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:54:20,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:54:20,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:54:20,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:54:20,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:54:20" (1/1) ... [2022-11-02 20:54:20,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f891dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20, skipping insertion in model container [2022-11-02 20:54:20,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:54:20" (1/1) ... [2022-11-02 20:54:20,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:54:20,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:54:21,366 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal134.c[1107,1120] [2022-11-02 20:54:23,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:54:23,345 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:54:23,359 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal134.c[1107,1120] [2022-11-02 20:54:24,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:54:24,752 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:54:24,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24 WrapperNode [2022-11-02 20:54:24,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:54:24,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:54:24,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:54:24,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:54:24,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24" (1/1) ... [2022-11-02 20:54:25,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24" (1/1) ... [2022-11-02 20:54:27,195 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24719 [2022-11-02 20:54:27,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:54:27,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:54:27,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:54:27,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:54:27,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24" (1/1) ... [2022-11-02 20:54:27,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24" (1/1) ... [2022-11-02 20:54:27,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24" (1/1) ... [2022-11-02 20:54:27,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24" (1/1) ... [2022-11-02 20:54:28,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24" (1/1) ... [2022-11-02 20:54:28,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24" (1/1) ... [2022-11-02 20:54:28,545 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24" (1/1) ... [2022-11-02 20:54:28,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24" (1/1) ... [2022-11-02 20:54:29,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:54:29,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:54:29,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:54:29,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:54:29,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24" (1/1) ... [2022-11-02 20:54:29,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:54:29,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:54:29,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:54:29,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:54:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:54:29,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:54:31,888 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:54:31,891 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:57:18,999 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:57:19,040 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:57:19,040 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:57:19,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:19 BoogieIcfgContainer [2022-11-02 20:57:19,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:57:19,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:57:19,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:57:19,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:57:19,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:54:20" (1/3) ... [2022-11-02 20:57:19,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f38e1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:19, skipping insertion in model container [2022-11-02 20:57:19,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:24" (2/3) ... [2022-11-02 20:57:19,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f38e1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:19, skipping insertion in model container [2022-11-02 20:57:19,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:19" (3/3) ... [2022-11-02 20:57:19,060 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal134.c [2022-11-02 20:57:19,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:57:19,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:57:19,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:57:19,216 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;@14b8109, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:57:19,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:57:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 3125 states, 3123 states have (on average 1.499839897534422) internal successors, (4684), 3124 states have internal predecessors, (4684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:19,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:57:19,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:19,243 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] [2022-11-02 20:57:19,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:19,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:19,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1034818127, now seen corresponding path program 1 times [2022-11-02 20:57:19,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:19,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074422637] [2022-11-02 20:57:19,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:19,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:20,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:57:20,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720756222] [2022-11-02 20:57:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:20,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:20,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:20,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:20,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:57:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:26,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:57:26,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:26,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:26,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:26,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074422637] [2022-11-02 20:57:26,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:57:26,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720756222] [2022-11-02 20:57:26,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720756222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:26,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:26,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:57:26,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463267093] [2022-11-02 20:57:26,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:26,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:57:26,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:26,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:57:26,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:57:26,472 INFO L87 Difference]: Start difference. First operand has 3125 states, 3123 states have (on average 1.499839897534422) internal successors, (4684), 3124 states have internal predecessors, (4684), 0 states have call successors, (0), 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 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:32,075 INFO L93 Difference]: Finished difference Result 9364 states and 14045 transitions. [2022-11-02 20:57:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:57:32,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-11-02 20:57:32,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:32,118 INFO L225 Difference]: With dead ends: 9364 [2022-11-02 20:57:32,118 INFO L226 Difference]: Without dead ends: 6241 [2022-11-02 20:57:32,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:57:32,134 INFO L413 NwaCegarLoop]: 4554 mSDtfsCounter, 9348 mSDsluCounter, 9194 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9348 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:32,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9348 Valid, 13748 Invalid, 286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 20:57:32,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2022-11-02 20:57:32,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 3123. [2022-11-02 20:57:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.4990390775144138) internal successors, (4680), 3122 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 4680 transitions. [2022-11-02 20:57:32,331 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 4680 transitions. Word has length 25 [2022-11-02 20:57:32,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:32,332 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 4680 transitions. [2022-11-02 20:57:32,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:32,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 4680 transitions. [2022-11-02 20:57:32,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:57:32,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:32,334 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] [2022-11-02 20:57:32,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:57:32,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:32,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:32,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1253672845, now seen corresponding path program 1 times [2022-11-02 20:57:32,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:32,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806961345] [2022-11-02 20:57:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:32,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:32,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:57:32,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422593693] [2022-11-02 20:57:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:32,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:32,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:32,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:32,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:57:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:38,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:57:38,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:40,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:40,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:40,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806961345] [2022-11-02 20:57:40,459 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:57:40,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422593693] [2022-11-02 20:57:40,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422593693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:40,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:40,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:57:40,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941444533] [2022-11-02 20:57:40,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:40,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:57:40,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:40,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:57:40,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:57:40,466 INFO L87 Difference]: Start difference. First operand 3123 states and 4680 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:42,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:42,122 INFO L93 Difference]: Finished difference Result 6242 states and 9356 transitions. [2022-11-02 20:57:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:57:42,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-11-02 20:57:42,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:42,136 INFO L225 Difference]: With dead ends: 6242 [2022-11-02 20:57:42,136 INFO L226 Difference]: Without dead ends: 3123 [2022-11-02 20:57:42,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:57:42,142 INFO L413 NwaCegarLoop]: 4638 mSDtfsCounter, 4668 mSDsluCounter, 4636 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 9274 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:42,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4668 Valid, 9274 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:57:42,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2022-11-02 20:57:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 3123. [2022-11-02 20:57:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.4987187700192184) internal successors, (4679), 3122 states have internal predecessors, (4679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 4679 transitions. [2022-11-02 20:57:42,218 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 4679 transitions. Word has length 25 [2022-11-02 20:57:42,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:42,219 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 4679 transitions. [2022-11-02 20:57:42,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:42,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 4679 transitions. [2022-11-02 20:57:42,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:57:42,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:42,222 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] [2022-11-02 20:57:42,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:42,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:42,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:42,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:42,437 INFO L85 PathProgramCache]: Analyzing trace with hash 242555595, now seen corresponding path program 1 times [2022-11-02 20:57:42,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:42,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012248564] [2022-11-02 20:57:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:42,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:42,830 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:57:42,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805549760] [2022-11-02 20:57:42,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:42,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:42,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:42,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:42,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:57:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:49,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:57:49,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:01,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:01,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:01,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012248564] [2022-11-02 20:58:01,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:01,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805549760] [2022-11-02 20:58:01,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805549760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:01,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:01,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:58:01,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436915501] [2022-11-02 20:58:01,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:01,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:58:01,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:01,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:58:01,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:58:01,981 INFO L87 Difference]: Start difference. First operand 3123 states and 4679 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:03,740 INFO L93 Difference]: Finished difference Result 6242 states and 9354 transitions. [2022-11-02 20:58:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:58:03,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-11-02 20:58:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:03,752 INFO L225 Difference]: With dead ends: 6242 [2022-11-02 20:58:03,753 INFO L226 Difference]: Without dead ends: 3123 [2022-11-02 20:58:03,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:58:03,758 INFO L413 NwaCegarLoop]: 4643 mSDtfsCounter, 4657 mSDsluCounter, 4642 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 9285 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:03,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 9285 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:58:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2022-11-02 20:58:03,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 3123. [2022-11-02 20:58:03,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.498398462524023) internal successors, (4678), 3122 states have internal predecessors, (4678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 4678 transitions. [2022-11-02 20:58:03,829 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 4678 transitions. Word has length 25 [2022-11-02 20:58:03,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:03,830 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 4678 transitions. [2022-11-02 20:58:03,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 4678 transitions. [2022-11-02 20:58:03,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:58:03,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:03,832 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] [2022-11-02 20:58:03,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:04,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:04,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:04,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:04,061 INFO L85 PathProgramCache]: Analyzing trace with hash 242615177, now seen corresponding path program 1 times [2022-11-02 20:58:04,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:04,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989159225] [2022-11-02 20:58:04,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:04,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:04,366 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:04,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288921334] [2022-11-02 20:58:04,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:04,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:04,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:04,369 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:04,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5972e29e-17fb-4137-9420-d9def28107fd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:58:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:09,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:58:09,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:09,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:09,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:09,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:09,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989159225] [2022-11-02 20:58:09,790 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:09,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288921334] [2022-11-02 20:58:09,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288921334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:09,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:09,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:58:09,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957023454] [2022-11-02 20:58:09,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:09,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:58:09,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:09,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:58:09,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:58:09,792 INFO L87 Difference]: Start difference. First operand 3123 states and 4678 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)