./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal170.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_46d4eb1f-9484-46cd-9a3e-8bda684583ab/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/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_46d4eb1f-9484-46cd-9a3e-8bda684583ab/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal170.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/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_46d4eb1f-9484-46cd-9a3e-8bda684583ab/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 ce751eada34116d3bbb36005dc925bc28d93efa70358711f824498b0ebc228c2 --- 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 20:07:18,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:07:18,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:07:18,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:07:18,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:07:18,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:07:18,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:07:18,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:07:18,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:07:18,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:07:18,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:07:18,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:07:18,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:07:18,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:07:18,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:07:18,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:07:18,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:07:18,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:07:18,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:07:18,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:07:18,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:07:18,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:07:18,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:07:18,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:07:18,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:07:18,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:07:18,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:07:18,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:07:18,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:07:18,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:07:18,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:07:18,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:07:18,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:07:18,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:07:18,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:07:18,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:07:18,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:07:18,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:07:18,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:07:18,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:07:18,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:07:18,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:07:18,861 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:07:18,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:07:18,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:07:18,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:07:18,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:07:18,865 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:07:18,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:07:18,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:07:18,867 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:07:18,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:07:18,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:07:18,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:07:18,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:07:18,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:07:18,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:07:18,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:07:18,871 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:07:18,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:07:18,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:07:18,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:07:18,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:07:18,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:07:18,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:07:18,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:07:18,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:07:18,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:07:18,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:07:18,876 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:07:18,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:07:18,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:07:18,876 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_46d4eb1f-9484-46cd-9a3e-8bda684583ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce751eada34116d3bbb36005dc925bc28d93efa70358711f824498b0ebc228c2 [2022-11-02 20:07:19,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:07:19,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:07:19,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:07:19,376 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:07:19,378 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:07:19,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal170.c [2022-11-02 20:07:19,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/bin/uautomizer-Dbtcem3rbc/data/0035f0fd0/58cd327cd311469cb65552eeb1f7b6a5/FLAG9c4f33517 [2022-11-02 20:07:20,704 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:07:20,706 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal170.c [2022-11-02 20:07:20,806 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/bin/uautomizer-Dbtcem3rbc/data/0035f0fd0/58cd327cd311469cb65552eeb1f7b6a5/FLAG9c4f33517 [2022-11-02 20:07:20,948 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/bin/uautomizer-Dbtcem3rbc/data/0035f0fd0/58cd327cd311469cb65552eeb1f7b6a5 [2022-11-02 20:07:20,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:07:20,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:07:20,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:20,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:07:20,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:07:20,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:20" (1/1) ... [2022-11-02 20:07:20,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686532fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:20, skipping insertion in model container [2022-11-02 20:07:20,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:20" (1/1) ... [2022-11-02 20:07:20,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:07:21,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:07:21,768 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_46d4eb1f-9484-46cd-9a3e-8bda684583ab/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal170.c[1107,1120] [2022-11-02 20:07:23,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:23,634 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:07:23,649 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_46d4eb1f-9484-46cd-9a3e-8bda684583ab/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal170.c[1107,1120] [2022-11-02 20:07:24,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:24,895 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:07:24,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24 WrapperNode [2022-11-02 20:07:24,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:24,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:24,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:07:24,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:07:24,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24" (1/1) ... [2022-11-02 20:07:25,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24" (1/1) ... [2022-11-02 20:07:27,702 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 15371 [2022-11-02 20:07:27,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:27,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:07:27,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:07:27,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:07:27,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24" (1/1) ... [2022-11-02 20:07:27,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24" (1/1) ... [2022-11-02 20:07:28,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24" (1/1) ... [2022-11-02 20:07:28,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24" (1/1) ... [2022-11-02 20:07:29,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24" (1/1) ... [2022-11-02 20:07:29,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24" (1/1) ... [2022-11-02 20:07:29,442 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24" (1/1) ... [2022-11-02 20:07:29,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24" (1/1) ... [2022-11-02 20:07:29,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:07:29,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:07:29,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:07:29,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:07:29,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24" (1/1) ... [2022-11-02 20:07:29,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:07:30,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:30,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:30,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d4eb1f-9484-46cd-9a3e-8bda684583ab/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:07:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:07:30,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:07:32,480 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:07:32,483 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:10:37,543 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:10:37,570 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:10:37,570 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:10:37,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:10:37 BoogieIcfgContainer [2022-11-02 20:10:37,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:10:37,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:10:37,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:10:37,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:10:37,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:07:20" (1/3) ... [2022-11-02 20:10:37,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588e1c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:10:37, skipping insertion in model container [2022-11-02 20:10:37,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:24" (2/3) ... [2022-11-02 20:10:37,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588e1c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:10:37, skipping insertion in model container [2022-11-02 20:10:37,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:10:37" (3/3) ... [2022-11-02 20:10:37,600 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal170.c [2022-11-02 20:10:37,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:10:37,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:10:37,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:10:37,744 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;@a2db229, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:10:37,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:10:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 1407 states, 1405 states have (on average 1.499644128113879) internal successors, (2107), 1406 states have internal predecessors, (2107), 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 20:10:37,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-02 20:10:37,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:37,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:37,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:37,784 INFO L85 PathProgramCache]: Analyzing trace with hash -648349831, now seen corresponding path program 1 times [2022-11-02 20:10:37,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:37,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089766937] [2022-11-02 20:10:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:37,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:44,413 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 20:10:44,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:44,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089766937] [2022-11-02 20:10:44,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089766937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:44,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:44,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:10:44,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622768232] [2022-11-02 20:10:44,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:44,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:10:44,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:44,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:10:44,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:10:44,478 INFO L87 Difference]: Start difference. First operand has 1407 states, 1405 states have (on average 1.499644128113879) internal successors, (2107), 1406 states have internal predecessors, (2107), 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 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 20:10:46,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:46,126 INFO L93 Difference]: Finished difference Result 4210 states and 6314 transitions. [2022-11-02 20:10:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:10:46,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 167 [2022-11-02 20:10:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:46,156 INFO L225 Difference]: With dead ends: 4210 [2022-11-02 20:10:46,157 INFO L226 Difference]: Without dead ends: 2805 [2022-11-02 20:10:46,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:10:46,171 INFO L413 NwaCegarLoop]: 2064 mSDtfsCounter, 4194 mSDsluCounter, 4159 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4194 SdHoareTripleChecker+Valid, 6223 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:46,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4194 Valid, 6223 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:10:46,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2022-11-02 20:10:46,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 1405. [2022-11-02 20:10:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 1.4978632478632479) internal successors, (2103), 1404 states have internal predecessors, (2103), 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 20:10:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 2103 transitions. [2022-11-02 20:10:46,307 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 2103 transitions. Word has length 167 [2022-11-02 20:10:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:46,308 INFO L495 AbstractCegarLoop]: Abstraction has 1405 states and 2103 transitions. [2022-11-02 20:10:46,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 20:10:46,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 2103 transitions. [2022-11-02 20:10:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-02 20:10:46,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:46,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:46,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:10:46,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:46,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1922009143, now seen corresponding path program 1 times [2022-11-02 20:10:46,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:46,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132179579] [2022-11-02 20:10:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:46,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:50,337 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 20:10:50,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:50,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132179579] [2022-11-02 20:10:50,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132179579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:50,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:50,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:10:50,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030921832] [2022-11-02 20:10:50,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:50,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:10:50,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:50,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:10:50,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:10:50,346 INFO L87 Difference]: Start difference. First operand 1405 states and 2103 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 20:10:52,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:52,091 INFO L93 Difference]: Finished difference Result 4208 states and 6302 transitions. [2022-11-02 20:10:52,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:10:52,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 167 [2022-11-02 20:10:52,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:52,108 INFO L225 Difference]: With dead ends: 4208 [2022-11-02 20:10:52,108 INFO L226 Difference]: Without dead ends: 2807 [2022-11-02 20:10:52,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:10:52,119 INFO L413 NwaCegarLoop]: 2066 mSDtfsCounter, 4191 mSDsluCounter, 4158 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 6224 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:52,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4191 Valid, 6224 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:10:52,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2022-11-02 20:10:52,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 1407. [2022-11-02 20:10:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1406 states have (on average 1.4971550497866288) internal successors, (2105), 1406 states have internal predecessors, (2105), 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 20:10:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 2105 transitions. [2022-11-02 20:10:52,180 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 2105 transitions. Word has length 167 [2022-11-02 20:10:52,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:52,181 INFO L495 AbstractCegarLoop]: Abstraction has 1407 states and 2105 transitions. [2022-11-02 20:10:52,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 20:10:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 2105 transitions. [2022-11-02 20:10:52,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-02 20:10:52,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:52,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:52,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:10:52,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:52,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:52,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1802686347, now seen corresponding path program 1 times [2022-11-02 20:10:52,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:52,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849077090] [2022-11-02 20:10:52,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:52,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:56,354 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 20:10:56,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:56,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849077090] [2022-11-02 20:10:56,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849077090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:56,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:56,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:10:56,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751074361] [2022-11-02 20:10:56,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:56,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:10:56,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:56,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:10:56,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:10:56,361 INFO L87 Difference]: Start difference. First operand 1407 states and 2105 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 20:10:58,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:11:00,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:00,360 INFO L93 Difference]: Finished difference Result 2808 states and 4204 transitions. [2022-11-02 20:11:00,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:11:00,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 167 [2022-11-02 20:11:00,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:00,380 INFO L225 Difference]: With dead ends: 2808 [2022-11-02 20:11:00,385 INFO L226 Difference]: Without dead ends: 1407 [2022-11-02 20:11:00,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:00,392 INFO L413 NwaCegarLoop]: 2077 mSDtfsCounter, 1959 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1959 SdHoareTripleChecker+Valid, 4153 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:00,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1959 Valid, 4153 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 20:11:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2022-11-02 20:11:00,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1407. [2022-11-02 20:11:00,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1406 states have (on average 1.496443812233286) internal successors, (2104), 1406 states have internal predecessors, (2104), 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 20:11:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 2104 transitions. [2022-11-02 20:11:00,432 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 2104 transitions. Word has length 167 [2022-11-02 20:11:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:00,435 INFO L495 AbstractCegarLoop]: Abstraction has 1407 states and 2104 transitions. [2022-11-02 20:11:00,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 20:11:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 2104 transitions. [2022-11-02 20:11:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-02 20:11:00,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:00,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:00,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:11:00,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:00,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1936699853, now seen corresponding path program 1 times [2022-11-02 20:11:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:00,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918827110] [2022-11-02 20:11:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:04,212 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 20:11:04,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:04,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918827110] [2022-11-02 20:11:04,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918827110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:04,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:04,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:11:04,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490416038] [2022-11-02 20:11:04,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:04,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:11:04,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:04,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:11:04,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:11:04,217 INFO L87 Difference]: Start difference. First operand 1407 states and 2104 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 20:11:05,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:05,780 INFO L93 Difference]: Finished difference Result 4352 states and 6513 transitions. [2022-11-02 20:11:05,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:11:05,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 167 [2022-11-02 20:11:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:05,793 INFO L225 Difference]: With dead ends: 4352 [2022-11-02 20:11:05,793 INFO L226 Difference]: Without dead ends: 2951 [2022-11-02 20:11:05,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:05,807 INFO L413 NwaCegarLoop]: 2279 mSDtfsCounter, 4044 mSDsluCounter, 4155 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4044 SdHoareTripleChecker+Valid, 6434 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:05,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4044 Valid, 6434 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:11:05,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2022-11-02 20:11:05,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1551. [2022-11-02 20:11:05,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 1550 states have (on average 1.495483870967742) internal successors, (2318), 1550 states have internal predecessors, (2318), 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 20:11:05,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 2318 transitions. [2022-11-02 20:11:05,859 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 2318 transitions. Word has length 167 [2022-11-02 20:11:05,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:05,861 INFO L495 AbstractCegarLoop]: Abstraction has 1551 states and 2318 transitions. [2022-11-02 20:11:05,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 20:11:05,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 2318 transitions. [2022-11-02 20:11:05,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-02 20:11:05,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:05,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:05,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:11:05,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:05,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:05,868 INFO L85 PathProgramCache]: Analyzing trace with hash 364122737, now seen corresponding path program 1 times [2022-11-02 20:11:05,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:05,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613547341] [2022-11-02 20:11:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:05,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat