./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/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_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/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_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/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 8d7ac4e991594d98a551c4a6bcf4f5a84930a621689511bd6ecf242e7dc37495 --- 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 20:26:52,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:26:52,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:26:52,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:26:52,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:26:52,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:26:52,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:26:52,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:26:52,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:26:52,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:26:52,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:26:52,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:26:52,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:26:52,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:26:52,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:26:52,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:26:52,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:26:52,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:26:52,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:26:52,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:26:52,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:26:52,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:26:52,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:26:52,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:26:52,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:26:52,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:26:52,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:26:52,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:26:52,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:26:52,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:26:52,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:26:52,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:26:52,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:26:52,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:26:52,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:26:52,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:26:52,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:26:52,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:26:52,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:26:52,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:26:52,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:26:52,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:26:52,844 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:26:52,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:26:52,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:26:52,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:26:52,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:26:52,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:26:52,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:26:52,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:26:52,847 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:26:52,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:26:52,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:26:52,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:26:52,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:26:52,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:26:52,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:26:52,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:26:52,848 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:26:52,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:26:52,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:26:52,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:26:52,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:26:52,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:26:52,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:26:52,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:26:52,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:26:52,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:26:52,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:26:52,851 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:26:52,851 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:26:52,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:26:52,851 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_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d7ac4e991594d98a551c4a6bcf4f5a84930a621689511bd6ecf242e7dc37495 [2022-11-02 20:26:53,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:26:53,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:26:53,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:26:53,222 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:26:53,223 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:26:53,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2022-11-02 20:26:53,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/data/af2716a45/54d58e17a4a04a99ad2b88b1a3f89cc2/FLAG985acb144 [2022-11-02 20:26:54,051 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:26:54,061 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2022-11-02 20:26:54,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/data/af2716a45/54d58e17a4a04a99ad2b88b1a3f89cc2/FLAG985acb144 [2022-11-02 20:26:54,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/data/af2716a45/54d58e17a4a04a99ad2b88b1a3f89cc2 [2022-11-02 20:26:54,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:26:54,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:26:54,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:26:54,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:26:54,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:26:54,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:26:54" (1/1) ... [2022-11-02 20:26:54,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f3604f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:54, skipping insertion in model container [2022-11-02 20:26:54,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:26:54" (1/1) ... [2022-11-02 20:26:54,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:26:54,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:26:54,652 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_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c[1107,1120] [2022-11-02 20:26:55,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:26:55,058 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:26:55,073 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_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c[1107,1120] [2022-11-02 20:26:55,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:26:55,179 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:26:55,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55 WrapperNode [2022-11-02 20:26:55,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:26:55,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:26:55,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:26:55,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:26:55,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55" (1/1) ... [2022-11-02 20:26:55,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55" (1/1) ... [2022-11-02 20:26:55,352 INFO L138 Inliner]: procedures = 15, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1069 [2022-11-02 20:26:55,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:26:55,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:26:55,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:26:55,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:26:55,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55" (1/1) ... [2022-11-02 20:26:55,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55" (1/1) ... [2022-11-02 20:26:55,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55" (1/1) ... [2022-11-02 20:26:55,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55" (1/1) ... [2022-11-02 20:26:55,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55" (1/1) ... [2022-11-02 20:26:55,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55" (1/1) ... [2022-11-02 20:26:55,530 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55" (1/1) ... [2022-11-02 20:26:55,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55" (1/1) ... [2022-11-02 20:26:55,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:26:55,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:26:55,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:26:55,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:26:55,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55" (1/1) ... [2022-11-02 20:26:55,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:26:55,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:55,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:26:55,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:26:55,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:26:55,684 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:26:55,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:26:55,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:26:55,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:26:55,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:26:55,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:26:55,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:26:56,153 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:26:56,156 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:26:58,796 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:26:58,808 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:26:58,809 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-02 20:26:58,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:26:58 BoogieIcfgContainer [2022-11-02 20:26:58,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:26:58,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:26:58,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:26:58,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:26:58,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:26:54" (1/3) ... [2022-11-02 20:26:58,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4797bc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:26:58, skipping insertion in model container [2022-11-02 20:26:58,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:55" (2/3) ... [2022-11-02 20:26:58,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4797bc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:26:58, skipping insertion in model container [2022-11-02 20:26:58,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:26:58" (3/3) ... [2022-11-02 20:26:58,827 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2022-11-02 20:26:58,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:26:58,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:26:58,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:26:58,951 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;@283af367, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:26:58,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:26:58,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 110 states have (on average 1.490909090909091) internal successors, (164), 111 states have internal predecessors, (164), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:26:58,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:26:58,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:58,972 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 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 20:26:58,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:58,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:58,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1046812587, now seen corresponding path program 1 times [2022-11-02 20:26:58,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:58,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058758075] [2022-11-02 20:26:58,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:58,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:59,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:26:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:59,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:26:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:59,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:26:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:59,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 20:26:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:59,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:26:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:59,853 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:26:59,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:59,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058758075] [2022-11-02 20:26:59,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058758075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:59,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:59,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:26:59,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942977519] [2022-11-02 20:26:59,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:59,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:26:59,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:59,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:26:59,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:26:59,910 INFO L87 Difference]: Start difference. First operand has 118 states, 110 states have (on average 1.490909090909091) internal successors, (164), 111 states have internal predecessors, (164), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:26:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:59,980 INFO L93 Difference]: Finished difference Result 228 states and 344 transitions. [2022-11-02 20:26:59,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:26:59,983 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2022-11-02 20:26:59,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:59,998 INFO L225 Difference]: With dead ends: 228 [2022-11-02 20:26:59,998 INFO L226 Difference]: Without dead ends: 114 [2022-11-02 20:27:00,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:27:00,011 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:00,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:27:00,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-02 20:27:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-11-02 20:27:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 107 states have (on average 1.411214953271028) internal successors, (151), 107 states have internal predecessors, (151), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:27:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 161 transitions. [2022-11-02 20:27:00,070 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 161 transitions. Word has length 43 [2022-11-02 20:27:00,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:00,070 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 161 transitions. [2022-11-02 20:27:00,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:27:00,071 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 161 transitions. [2022-11-02 20:27:00,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:27:00,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:00,074 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 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 20:27:00,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:27:00,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:00,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:00,075 INFO L85 PathProgramCache]: Analyzing trace with hash -700542325, now seen corresponding path program 1 times [2022-11-02 20:27:00,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:00,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918194737] [2022-11-02 20:27:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:00,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:01,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:27:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:27:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:01,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:27:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:01,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 20:27:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:01,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:27:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:27:01,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:01,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918194737] [2022-11-02 20:27:01,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918194737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:27:01,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:27:01,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:27:01,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107714672] [2022-11-02 20:27:01,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:27:01,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:27:01,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:01,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:27:01,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:27:01,217 INFO L87 Difference]: Start difference. First operand 114 states and 161 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 20:27:01,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:01,250 INFO L93 Difference]: Finished difference Result 226 states and 320 transitions. [2022-11-02 20:27:01,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:27:01,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2022-11-02 20:27:01,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:01,253 INFO L225 Difference]: With dead ends: 226 [2022-11-02 20:27:01,253 INFO L226 Difference]: Without dead ends: 116 [2022-11-02 20:27:01,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:27:01,256 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:01,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 316 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:27:01,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-02 20:27:01,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2022-11-02 20:27:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 108 states have (on average 1.4074074074074074) internal successors, (152), 108 states have internal predecessors, (152), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:27:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 162 transitions. [2022-11-02 20:27:01,273 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 162 transitions. Word has length 43 [2022-11-02 20:27:01,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:01,274 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 162 transitions. [2022-11-02 20:27:01,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 20:27:01,275 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 162 transitions. [2022-11-02 20:27:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 20:27:01,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:01,277 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 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 20:27:01,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:27:01,277 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:01,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:01,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1859850167, now seen corresponding path program 1 times [2022-11-02 20:27:01,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:01,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629005458] [2022-11-02 20:27:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:01,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:02,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:27:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:02,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:27:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:02,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:27:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:27:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:27:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:27:02,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:02,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629005458] [2022-11-02 20:27:02,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629005458] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:27:02,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294357973] [2022-11-02 20:27:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:02,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:27:02,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:27:02,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:27:02,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:27:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:02,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:27:02,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:27:03,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-02 20:27:03,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294357973] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:27:03,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:27:03,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-02 20:27:03,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077600275] [2022-11-02 20:27:03,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:27:03,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:27:03,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:03,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:27:03,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:27:03,079 INFO L87 Difference]: Start difference. First operand 115 states and 162 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 20:27:03,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:03,105 INFO L93 Difference]: Finished difference Result 223 states and 316 transitions. [2022-11-02 20:27:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:27:03,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 45 [2022-11-02 20:27:03,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:03,107 INFO L225 Difference]: With dead ends: 223 [2022-11-02 20:27:03,107 INFO L226 Difference]: Without dead ends: 116 [2022-11-02 20:27:03,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:27:03,110 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:03,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 315 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:27:03,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-02 20:27:03,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-02 20:27:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 109 states have (on average 1.4036697247706422) internal successors, (153), 109 states have internal predecessors, (153), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:27:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 163 transitions. [2022-11-02 20:27:03,122 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 163 transitions. Word has length 45 [2022-11-02 20:27:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:03,122 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 163 transitions. [2022-11-02 20:27:03,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 20:27:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 163 transitions. [2022-11-02 20:27:03,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 20:27:03,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:03,124 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:03,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:03,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:27:03,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:03,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1339365817, now seen corresponding path program 1 times [2022-11-02 20:27:03,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:03,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080191684] [2022-11-02 20:27:03,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:03,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:04,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:27:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:04,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:27:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:04,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:27:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:04,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:27:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:04,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 20:27:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-02 20:27:04,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:04,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080191684] [2022-11-02 20:27:04,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080191684] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:27:04,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733439841] [2022-11-02 20:27:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:04,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:27:04,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:27:04,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:27:04,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b82e4c-5a25-4fd3-a373-8455a9ca1f00/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:27:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:06,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 20:27:06,338 INFO L286 TraceCheckSpWp]: Computing forward predicates...