./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fe8c4b1a27642c802f8c97577aadb7892fddcd015ae43c580aa1247dba190651 --- 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-8393723 [2022-11-19 07:07:49,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:07:49,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:07:49,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:07:49,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:07:49,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:07:49,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:07:49,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:07:49,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:07:49,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:07:49,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:07:49,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:07:49,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:07:49,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:07:49,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:07:49,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:07:49,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:07:49,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:07:49,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:07:49,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:07:49,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:07:49,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:07:49,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:07:49,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:07:49,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:07:49,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:07:49,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:07:49,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:07:49,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:07:49,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:07:49,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:07:49,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:07:49,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:07:49,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:07:49,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:07:49,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:07:49,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:07:49,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:07:49,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:07:49,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:07:49,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:07:49,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:07:49,670 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:07:49,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:07:49,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:07:49,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:07:49,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:07:49,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:07:49,673 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:07:49,673 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:07:49,674 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:07:49,674 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:07:49,675 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:07:49,675 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:07:49,676 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:07:49,676 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:07:49,676 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:07:49,677 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:07:49,677 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:07:49,677 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:07:49,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:07:49,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:07:49,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:07:49,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:07:49,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:07:49,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:07:49,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:07:49,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:07:49,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:07:49,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:07:49,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:07:49,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:07:49,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:07:49,682 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:07:49,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:07:49,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:07:49,683 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:07:49,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:07:49,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:07:49,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:07:49,684 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_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe8c4b1a27642c802f8c97577aadb7892fddcd015ae43c580aa1247dba190651 [2022-11-19 07:07:50,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:07:50,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:07:50,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:07:50,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:07:50,075 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:07:50,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2022-11-19 07:07:50,177 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/data/5cb8b2eae/db5be640084348eabc99a0c284a04aa4/FLAGd1c1fca24 [2022-11-19 07:07:51,150 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:07:51,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2022-11-19 07:07:51,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/data/5cb8b2eae/db5be640084348eabc99a0c284a04aa4/FLAGd1c1fca24 [2022-11-19 07:07:51,606 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/data/5cb8b2eae/db5be640084348eabc99a0c284a04aa4 [2022-11-19 07:07:51,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:07:51,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:07:51,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:07:51,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:07:51,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:07:51,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:07:51" (1/1) ... [2022-11-19 07:07:51,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6a7299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:51, skipping insertion in model container [2022-11-19 07:07:51,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:07:51" (1/1) ... [2022-11-19 07:07:51,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:07:51,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:07:52,531 WARN L234 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_f6fe8a44-506d-4045-8cfe-ae7491a795f1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i[120162,120175] [2022-11-19 07:07:52,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:07:52,620 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:07:52,914 WARN L234 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_f6fe8a44-506d-4045-8cfe-ae7491a795f1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i[120162,120175] [2022-11-19 07:07:52,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:07:52,965 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:07:52,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52 WrapperNode [2022-11-19 07:07:52,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:07:52,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:07:52,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:07:52,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:07:52,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52" (1/1) ... [2022-11-19 07:07:53,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52" (1/1) ... [2022-11-19 07:07:53,124 INFO L138 Inliner]: procedures = 95, calls = 374, calls flagged for inlining = 31, calls inlined = 28, statements flattened = 1159 [2022-11-19 07:07:53,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:07:53,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:07:53,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:07:53,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:07:53,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52" (1/1) ... [2022-11-19 07:07:53,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52" (1/1) ... [2022-11-19 07:07:53,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52" (1/1) ... [2022-11-19 07:07:53,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52" (1/1) ... [2022-11-19 07:07:53,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52" (1/1) ... [2022-11-19 07:07:53,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52" (1/1) ... [2022-11-19 07:07:53,260 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52" (1/1) ... [2022-11-19 07:07:53,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52" (1/1) ... [2022-11-19 07:07:53,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:07:53,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:07:53,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:07:53,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:07:53,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52" (1/1) ... [2022-11-19 07:07:53,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:07:53,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:07:53,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:07:53,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:07:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:07:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure superio_inw [2022-11-19 07:07:53,410 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_inw [2022-11-19 07:07:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure superio_outw [2022-11-19 07:07:53,411 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_outw [2022-11-19 07:07:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_stop [2022-11-19 07:07:53,411 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_stop [2022-11-19 07:07:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:07:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:07:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:07:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_write [2022-11-19 07:07:53,412 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_write [2022-11-19 07:07:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_update_timeout [2022-11-19 07:07:53,412 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_update_timeout [2022-11-19 07:07:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:07:53,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:07:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:07:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:07:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:07:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:07:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_round_time [2022-11-19 07:07:53,414 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_round_time [2022-11-19 07:07:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2022-11-19 07:07:53,414 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2022-11-19 07:07:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:07:53,414 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:07:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:07:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure superio_exit [2022-11-19 07:07:53,415 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_exit [2022-11-19 07:07:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:07:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-19 07:07:53,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-19 07:07:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:07:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-19 07:07:53,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-19 07:07:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:07:53,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:07:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_start [2022-11-19 07:07:53,417 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_start [2022-11-19 07:07:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure superio_select [2022-11-19 07:07:53,417 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_select [2022-11-19 07:07:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 07:07:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 07:07:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:07:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:07:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-19 07:07:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-19 07:07:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:07:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:07:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure superio_enter [2022-11-19 07:07:53,421 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_enter [2022-11-19 07:07:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:07:53,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:07:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:07:53,423 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:07:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:07:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_keepalive [2022-11-19 07:07:53,424 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_keepalive [2022-11-19 07:07:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-19 07:07:53,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-19 07:07:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure superio_inb [2022-11-19 07:07:53,425 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_inb [2022-11-19 07:07:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure superio_outb [2022-11-19 07:07:53,425 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_outb [2022-11-19 07:07:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:07:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-19 07:07:53,426 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-19 07:07:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 07:07:53,426 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 07:07:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:07:53,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:07:53,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:07:53,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:07:53,892 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:07:53,895 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:07:54,286 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:07:56,339 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:07:56,770 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:07:56,771 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:07:56,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:07:56 BoogieIcfgContainer [2022-11-19 07:07:56,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:07:56,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:07:56,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:07:56,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:07:56,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:07:51" (1/3) ... [2022-11-19 07:07:56,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1783fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:07:56, skipping insertion in model container [2022-11-19 07:07:56,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:52" (2/3) ... [2022-11-19 07:07:56,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1783fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:07:56, skipping insertion in model container [2022-11-19 07:07:56,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:07:56" (3/3) ... [2022-11-19 07:07:56,793 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2022-11-19 07:07:56,817 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:07:56,818 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:07:56,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:07:56,955 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=FINITE_AUTOMATA, 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;@38561261, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:07:56,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:07:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 476 states, 264 states have (on average 1.4090909090909092) internal successors, (372), 296 states have internal predecessors, (372), 181 states have call successors, (181), 30 states have call predecessors, (181), 29 states have return successors, (177), 172 states have call predecessors, (177), 177 states have call successors, (177) [2022-11-19 07:07:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-19 07:07:56,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:56,986 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:56,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:56,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash 245495152, now seen corresponding path program 1 times [2022-11-19 07:07:57,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:57,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460793739] [2022-11-19 07:07:57,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-19 07:07:57,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:57,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460793739] [2022-11-19 07:07:57,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460793739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:57,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:57,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:57,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246318538] [2022-11-19 07:07:57,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:57,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:57,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:57,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:57,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:57,881 INFO L87 Difference]: Start difference. First operand has 476 states, 264 states have (on average 1.4090909090909092) internal successors, (372), 296 states have internal predecessors, (372), 181 states have call successors, (181), 30 states have call predecessors, (181), 29 states have return successors, (177), 172 states have call predecessors, (177), 177 states have call successors, (177) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:07:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:58,729 INFO L93 Difference]: Finished difference Result 927 states and 1426 transitions. [2022-11-19 07:07:58,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:58,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 105 [2022-11-19 07:07:58,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:58,775 INFO L225 Difference]: With dead ends: 927 [2022-11-19 07:07:58,776 INFO L226 Difference]: Without dead ends: 875 [2022-11-19 07:07:58,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:58,833 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 690 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:58,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 1633 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:07:58,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-11-19 07:07:59,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 874. [2022-11-19 07:07:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 493 states have (on average 1.3955375253549696) internal successors, (688), 540 states have internal predecessors, (688), 325 states have call successors, (325), 56 states have call predecessors, (325), 55 states have return successors, (324), 315 states have call predecessors, (324), 324 states have call successors, (324) [2022-11-19 07:07:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1337 transitions. [2022-11-19 07:07:59,077 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1337 transitions. Word has length 105 [2022-11-19 07:07:59,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:59,080 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1337 transitions. [2022-11-19 07:07:59,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:07:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1337 transitions. [2022-11-19 07:07:59,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-19 07:07:59,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:59,107 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:59,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:07:59,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:59,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:59,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1511708349, now seen corresponding path program 1 times [2022-11-19 07:07:59,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:59,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852174109] [2022-11-19 07:07:59,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:59,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-19 07:07:59,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:59,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852174109] [2022-11-19 07:07:59,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852174109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:59,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:59,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:59,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873440564] [2022-11-19 07:07:59,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:59,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:59,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:59,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:59,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:59,516 INFO L87 Difference]: Start difference. First operand 874 states and 1337 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:08:00,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:00,183 INFO L93 Difference]: Finished difference Result 2116 states and 3223 transitions. [2022-11-19 07:08:00,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:00,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 147 [2022-11-19 07:08:00,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:00,195 INFO L225 Difference]: With dead ends: 2116 [2022-11-19 07:08:00,196 INFO L226 Difference]: Without dead ends: 1266 [2022-11-19 07:08:00,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:00,203 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 361 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:00,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1362 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:08:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-11-19 07:08:00,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1260. [2022-11-19 07:08:00,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 697 states have (on average 1.3916786226685796) internal successors, (970), 764 states have internal predecessors, (970), 472 states have call successors, (472), 91 states have call predecessors, (472), 90 states have return successors, (471), 458 states have call predecessors, (471), 471 states have call successors, (471) [2022-11-19 07:08:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1913 transitions. [2022-11-19 07:08:00,341 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1913 transitions. Word has length 147 [2022-11-19 07:08:00,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:00,343 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1913 transitions. [2022-11-19 07:08:00,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:08:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1913 transitions. [2022-11-19 07:08:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-19 07:08:00,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:00,360 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:00,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:08:00,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:00,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:00,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1898607792, now seen corresponding path program 1 times [2022-11-19 07:08:00,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:00,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851535668] [2022-11-19 07:08:00,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:00,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:01,596 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2022-11-19 07:08:01,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:01,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851535668] [2022-11-19 07:08:01,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851535668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:01,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:01,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:08:01,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837763967] [2022-11-19 07:08:01,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:01,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:08:01,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:01,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:08:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:08:01,603 INFO L87 Difference]: Start difference. First operand 1260 states and 1913 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) [2022-11-19 07:08:03,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:03,960 INFO L93 Difference]: Finished difference Result 3174 states and 4941 transitions. [2022-11-19 07:08:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:08:03,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) Word has length 305 [2022-11-19 07:08:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:03,980 INFO L225 Difference]: With dead ends: 3174 [2022-11-19 07:08:03,981 INFO L226 Difference]: Without dead ends: 1946 [2022-11-19 07:08:03,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:08:03,993 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 1082 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:03,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1227 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 07:08:04,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2022-11-19 07:08:04,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1486. [2022-11-19 07:08:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 805 states have (on average 1.396273291925466) internal successors, (1124), 896 states have internal predecessors, (1124), 590 states have call successors, (590), 91 states have call predecessors, (590), 90 states have return successors, (589), 572 states have call predecessors, (589), 589 states have call successors, (589) [2022-11-19 07:08:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2303 transitions. [2022-11-19 07:08:04,156 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2303 transitions. Word has length 305 [2022-11-19 07:08:04,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:04,159 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2303 transitions. [2022-11-19 07:08:04,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) [2022-11-19 07:08:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2303 transitions. [2022-11-19 07:08:04,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-11-19 07:08:04,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:04,171 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:04,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:08:04,172 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:04,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:04,173 INFO L85 PathProgramCache]: Analyzing trace with hash -166615994, now seen corresponding path program 1 times [2022-11-19 07:08:04,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:04,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056062003] [2022-11-19 07:08:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:04,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2022-11-19 07:08:04,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:04,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056062003] [2022-11-19 07:08:04,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056062003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:04,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:04,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:08:04,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218528327] [2022-11-19 07:08:04,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:04,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:08:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:04,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:08:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:04,579 INFO L87 Difference]: Start difference. First operand 1486 states and 2303 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-19 07:08:05,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:05,142 INFO L93 Difference]: Finished difference Result 2940 states and 4564 transitions. [2022-11-19 07:08:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:05,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 308 [2022-11-19 07:08:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:05,186 INFO L225 Difference]: With dead ends: 2940 [2022-11-19 07:08:05,186 INFO L226 Difference]: Without dead ends: 1486 [2022-11-19 07:08:05,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:05,199 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 668 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:05,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 670 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:08:05,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-11-19 07:08:05,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1486. [2022-11-19 07:08:05,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 805 states have (on average 1.3863354037267082) internal successors, (1116), 896 states have internal predecessors, (1116), 590 states have call successors, (590), 91 states have call predecessors, (590), 90 states have return successors, (589), 572 states have call predecessors, (589), 589 states have call successors, (589) [2022-11-19 07:08:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2295 transitions. [2022-11-19 07:08:05,455 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2295 transitions. Word has length 308 [2022-11-19 07:08:05,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:05,457 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2295 transitions. [2022-11-19 07:08:05,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-19 07:08:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2295 transitions. [2022-11-19 07:08:05,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-19 07:08:05,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:05,471 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:05,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:08:05,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:05,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:05,473 INFO L85 PathProgramCache]: Analyzing trace with hash 500254615, now seen corresponding path program 1 times [2022-11-19 07:08:05,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:05,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496125328] [2022-11-19 07:08:05,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:05,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:06,137 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-11-19 07:08:06,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:06,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496125328] [2022-11-19 07:08:06,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496125328] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:06,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161932378] [2022-11-19 07:08:06,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:06,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:06,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:06,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:06,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:08:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:06,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:08:06,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-19 07:08:07,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:08:07,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161932378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:07,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:08:07,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-19 07:08:07,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51760202] [2022-11-19 07:08:07,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:07,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:08:07,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:07,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:08:07,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:08:07,633 INFO L87 Difference]: Start difference. First operand 1486 states and 2295 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-19 07:08:08,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:08,536 INFO L93 Difference]: Finished difference Result 2940 states and 4548 transitions. [2022-11-19 07:08:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:08,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 313 [2022-11-19 07:08:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:08,548 INFO L225 Difference]: With dead ends: 2940 [2022-11-19 07:08:08,548 INFO L226 Difference]: Without dead ends: 1486 [2022-11-19 07:08:08,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:08:08,556 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 555 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:08,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 669 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:08:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-11-19 07:08:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1486. [2022-11-19 07:08:08,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 805 states have (on average 1.3838509316770187) internal successors, (1114), 896 states have internal predecessors, (1114), 590 states have call successors, (590), 91 states have call predecessors, (590), 90 states have return successors, (589), 572 states have call predecessors, (589), 589 states have call successors, (589) [2022-11-19 07:08:08,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2293 transitions. [2022-11-19 07:08:08,727 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2293 transitions. Word has length 313 [2022-11-19 07:08:08,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:08,732 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2293 transitions. [2022-11-19 07:08:08,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-19 07:08:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2293 transitions. [2022-11-19 07:08:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-19 07:08:08,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:08,744 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:08,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:08:08,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:08,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:08,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1302159825, now seen corresponding path program 1 times [2022-11-19 07:08:08,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:08,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215547649] [2022-11-19 07:08:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:08,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-11-19 07:08:09,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:09,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215547649] [2022-11-19 07:08:09,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215547649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:09,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:09,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:08:09,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143699691] [2022-11-19 07:08:09,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:09,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:08:09,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:09,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:08:09,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:08:09,753 INFO L87 Difference]: Start difference. First operand 1486 states and 2293 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-19 07:08:11,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:12,712 INFO L93 Difference]: Finished difference Result 3724 states and 5701 transitions. [2022-11-19 07:08:12,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:08:12,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 318 [2022-11-19 07:08:12,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:12,734 INFO L225 Difference]: With dead ends: 3724 [2022-11-19 07:08:12,735 INFO L226 Difference]: Without dead ends: 2195 [2022-11-19 07:08:12,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:08:12,746 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 610 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:12,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 2518 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 07:08:12,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2022-11-19 07:08:12,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2140. [2022-11-19 07:08:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 1202 states have (on average 1.3810316139767056) internal successors, (1660), 1319 states have internal predecessors, (1660), 793 states have call successors, (793), 145 states have call predecessors, (793), 144 states have return successors, (792), 770 states have call predecessors, (792), 792 states have call successors, (792) [2022-11-19 07:08:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 3245 transitions. [2022-11-19 07:08:12,998 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 3245 transitions. Word has length 318 [2022-11-19 07:08:12,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:12,999 INFO L495 AbstractCegarLoop]: Abstraction has 2140 states and 3245 transitions. [2022-11-19 07:08:12,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-19 07:08:13,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 3245 transitions. [2022-11-19 07:08:13,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-19 07:08:13,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:13,014 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:13,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:08:13,020 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:13,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:13,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1862873364, now seen corresponding path program 1 times [2022-11-19 07:08:13,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:13,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072034744] [2022-11-19 07:08:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:13,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-19 07:08:13,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:13,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072034744] [2022-11-19 07:08:13,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072034744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:13,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:13,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:08:13,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824919827] [2022-11-19 07:08:13,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:13,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:08:13,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:13,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:08:13,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:08:13,679 INFO L87 Difference]: Start difference. First operand 2140 states and 3245 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-19 07:08:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:15,819 INFO L93 Difference]: Finished difference Result 3893 states and 5826 transitions. [2022-11-19 07:08:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:08:15,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 325 [2022-11-19 07:08:15,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:15,833 INFO L225 Difference]: With dead ends: 3893 [2022-11-19 07:08:15,833 INFO L226 Difference]: Without dead ends: 1682 [2022-11-19 07:08:15,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:08:15,845 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 477 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:15,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1382 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-19 07:08:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2022-11-19 07:08:15,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1682. [2022-11-19 07:08:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 976 states have (on average 1.353483606557377) internal successors, (1321), 1053 states have internal predecessors, (1321), 568 states have call successors, (568), 138 states have call predecessors, (568), 137 states have return successors, (567), 551 states have call predecessors, (567), 567 states have call successors, (567) [2022-11-19 07:08:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2456 transitions. [2022-11-19 07:08:16,016 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2456 transitions. Word has length 325 [2022-11-19 07:08:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:16,019 INFO L495 AbstractCegarLoop]: Abstraction has 1682 states and 2456 transitions. [2022-11-19 07:08:16,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-19 07:08:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2456 transitions. [2022-11-19 07:08:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-19 07:08:16,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:16,033 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:16,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:08:16,034 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:16,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:16,035 INFO L85 PathProgramCache]: Analyzing trace with hash 112539899, now seen corresponding path program 1 times [2022-11-19 07:08:16,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:16,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400688906] [2022-11-19 07:08:16,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:16,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2022-11-19 07:08:17,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:17,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400688906] [2022-11-19 07:08:17,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400688906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:17,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417428256] [2022-11-19 07:08:17,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:17,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:17,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:17,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:17,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:08:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:18,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2305 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:08:18,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-11-19 07:08:18,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:08:18,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417428256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:18,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:08:18,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 07:08:18,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442106160] [2022-11-19 07:08:18,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:18,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:08:18,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:18,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:08:18,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:08:18,235 INFO L87 Difference]: Start difference. First operand 1682 states and 2456 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-19 07:08:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:19,983 INFO L93 Difference]: Finished difference Result 3308 states and 4846 transitions. [2022-11-19 07:08:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:08:19,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) Word has length 329 [2022-11-19 07:08:19,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:20,000 INFO L225 Difference]: With dead ends: 3308 [2022-11-19 07:08:20,000 INFO L226 Difference]: Without dead ends: 1696 [2022-11-19 07:08:20,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:08:20,014 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 0 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:20,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2630 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-19 07:08:20,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2022-11-19 07:08:20,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1684. [2022-11-19 07:08:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 977 states have (on average 1.353121801432958) internal successors, (1322), 1055 states have internal predecessors, (1322), 568 states have call successors, (568), 138 states have call predecessors, (568), 138 states have return successors, (570), 551 states have call predecessors, (570), 567 states have call successors, (570) [2022-11-19 07:08:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2460 transitions. [2022-11-19 07:08:20,278 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2460 transitions. Word has length 329 [2022-11-19 07:08:20,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:20,279 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2460 transitions. [2022-11-19 07:08:20,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-19 07:08:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2460 transitions. [2022-11-19 07:08:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-19 07:08:20,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:20,298 INFO L195 NwaCegarLoop]: trace histogram [17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:20,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:08:20,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:20,510 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:20,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1446935686, now seen corresponding path program 1 times [2022-11-19 07:08:20,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:20,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952342498] [2022-11-19 07:08:20,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:20,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2022-11-19 07:08:21,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:21,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952342498] [2022-11-19 07:08:21,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952342498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:21,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028767165] [2022-11-19 07:08:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:21,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:21,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:21,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:21,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:08:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:22,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 2348 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:08:22,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-19 07:08:22,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:08:22,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028767165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:22,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:08:22,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 07:08:22,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721705595] [2022-11-19 07:08:22,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:22,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:08:22,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:22,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:08:22,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:08:22,490 INFO L87 Difference]: Start difference. First operand 1684 states and 2460 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-19 07:08:24,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:24,082 INFO L93 Difference]: Finished difference Result 3273 states and 4795 transitions. [2022-11-19 07:08:24,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:08:24,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) Word has length 342 [2022-11-19 07:08:24,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:24,096 INFO L225 Difference]: With dead ends: 3273 [2022-11-19 07:08:24,096 INFO L226 Difference]: Without dead ends: 1696 [2022-11-19 07:08:24,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:08:24,106 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 0 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:24,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2631 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 07:08:24,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2022-11-19 07:08:24,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1684. [2022-11-19 07:08:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 977 states have (on average 1.353121801432958) internal successors, (1322), 1055 states have internal predecessors, (1322), 568 states have call successors, (568), 138 states have call predecessors, (568), 138 states have return successors, (568), 551 states have call predecessors, (568), 567 states have call successors, (568) [2022-11-19 07:08:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2458 transitions. [2022-11-19 07:08:24,259 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2458 transitions. Word has length 342 [2022-11-19 07:08:24,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:24,260 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2458 transitions. [2022-11-19 07:08:24,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-19 07:08:24,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2458 transitions. [2022-11-19 07:08:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-19 07:08:24,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:24,289 INFO L195 NwaCegarLoop]: trace histogram [21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:24,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:08:24,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:24,490 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:24,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1164319803, now seen corresponding path program 2 times [2022-11-19 07:08:24,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:24,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105660881] [2022-11-19 07:08:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:24,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2022-11-19 07:08:25,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:25,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105660881] [2022-11-19 07:08:25,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105660881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:25,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16161295] [2022-11-19 07:08:25,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:08:25,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:25,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:25,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:25,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:08:28,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:08:28,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:08:28,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:08:28,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2022-11-19 07:08:28,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:08:28,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16161295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:28,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:08:28,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-11-19 07:08:28,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338315515] [2022-11-19 07:08:28,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:28,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:08:28,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:28,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:08:28,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:08:28,198 INFO L87 Difference]: Start difference. First operand 1684 states and 2458 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 6 states have internal predecessors, (127), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (53), 4 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-19 07:08:30,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:30,891 INFO L93 Difference]: Finished difference Result 3742 states and 5621 transitions. [2022-11-19 07:08:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:08:30,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 6 states have internal predecessors, (127), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (53), 4 states have call predecessors, (53), 2 states have call successors, (53) Word has length 355 [2022-11-19 07:08:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:30,908 INFO L225 Difference]: With dead ends: 3742 [2022-11-19 07:08:30,908 INFO L226 Difference]: Without dead ends: 2385 [2022-11-19 07:08:30,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:08:30,916 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 172 mSDsluCounter, 5130 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 6021 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:30,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 6021 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:08:30,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2022-11-19 07:08:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1716. [2022-11-19 07:08:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1001 states have (on average 1.3446553446553446) internal successors, (1346), 1079 states have internal predecessors, (1346), 568 states have call successors, (568), 138 states have call predecessors, (568), 146 states have return successors, (597), 559 states have call predecessors, (597), 567 states have call successors, (597) [2022-11-19 07:08:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2511 transitions. [2022-11-19 07:08:31,095 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2511 transitions. Word has length 355 [2022-11-19 07:08:31,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:31,096 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2511 transitions. [2022-11-19 07:08:31,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 6 states have internal predecessors, (127), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (53), 4 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-19 07:08:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2511 transitions. [2022-11-19 07:08:31,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-19 07:08:31,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:31,107 INFO L195 NwaCegarLoop]: trace histogram [21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:31,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:08:31,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 07:08:31,319 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:31,320 INFO L85 PathProgramCache]: Analyzing trace with hash -940932665, now seen corresponding path program 1 times [2022-11-19 07:08:31,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:31,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267685355] [2022-11-19 07:08:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:31,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2022-11-19 07:08:32,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:32,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267685355] [2022-11-19 07:08:32,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267685355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:32,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362809080] [2022-11-19 07:08:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:32,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:32,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:32,847 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:32,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:08:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:33,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:08:33,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2022-11-19 07:08:34,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:08:34,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362809080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:34,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:08:34,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-19 07:08:34,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026829594] [2022-11-19 07:08:34,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:34,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:08:34,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:34,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:08:34,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:08:34,049 INFO L87 Difference]: Start difference. First operand 1716 states and 2511 transitions. Second operand has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (58), 2 states have call predecessors, (58), 3 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 07:08:35,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:35,954 INFO L93 Difference]: Finished difference Result 3416 states and 5007 transitions. [2022-11-19 07:08:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:08:35,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (58), 2 states have call predecessors, (58), 3 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 364 [2022-11-19 07:08:35,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:35,968 INFO L225 Difference]: With dead ends: 3416 [2022-11-19 07:08:35,968 INFO L226 Difference]: Without dead ends: 1717 [2022-11-19 07:08:35,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:08:35,977 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 1 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:35,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1972 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 07:08:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2022-11-19 07:08:36,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1717. [2022-11-19 07:08:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1002 states have (on average 1.344311377245509) internal successors, (1347), 1080 states have internal predecessors, (1347), 568 states have call successors, (568), 138 states have call predecessors, (568), 146 states have return successors, (597), 559 states have call predecessors, (597), 567 states have call successors, (597) [2022-11-19 07:08:36,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2512 transitions. [2022-11-19 07:08:36,158 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2512 transitions. Word has length 364 [2022-11-19 07:08:36,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:36,159 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2512 transitions. [2022-11-19 07:08:36,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (58), 2 states have call predecessors, (58), 3 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 07:08:36,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2512 transitions. [2022-11-19 07:08:36,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-11-19 07:08:36,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:36,174 INFO L195 NwaCegarLoop]: trace histogram [21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:36,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:08:36,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:36,388 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:36,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:36,389 INFO L85 PathProgramCache]: Analyzing trace with hash 188520081, now seen corresponding path program 1 times [2022-11-19 07:08:36,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:36,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696580513] [2022-11-19 07:08:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:36,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2022-11-19 07:08:37,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:37,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696580513] [2022-11-19 07:08:37,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696580513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:37,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301815766] [2022-11-19 07:08:37,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:37,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:37,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:37,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:37,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:08:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:39,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 07:08:39,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 110 proven. 1 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-11-19 07:08:39,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:08:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-19 07:08:40,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301815766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:08:40,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1752723338] [2022-11-19 07:08:40,106 INFO L159 IcfgInterpreter]: Started Sifa with 187 locations of interest [2022-11-19 07:08:40,106 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:08:40,112 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:08:40,120 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:08:40,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:08:43,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 75 [2022-11-19 07:08:44,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,834 INFO L217 Elim1Store]: Index analysis took 689 ms [2022-11-19 07:08:58,005 WARN L233 SmtUtils]: Spent 13.14s on a formula simplification. DAG size of input: 1077 DAG size of output: 451 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:08:58,008 INFO L321 Elim1Store]: treesize reduction 4376, result has 15.6 percent of original size [2022-11-19 07:08:58,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 35 select indices, 35 select index equivalence classes, 418 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 214 case distinctions, treesize of input 257 treesize of output 989 [2022-11-19 07:08:58,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:58,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:58,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:58,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:58,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:58,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:58,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:59,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 62 [2022-11-19 07:08:59,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-19 07:08:59,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:59,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:59,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:59,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:59,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:59,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:59,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 28 select indices, 28 select index equivalence classes, 567 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 255 [2022-11-19 07:08:59,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:59,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:59,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-19 07:09:00,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 55 [2022-11-19 07:09:00,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:09:01,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:09:01,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:09:01,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-19 07:09:02,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:02,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:02,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:02,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:02,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:02,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:02,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-19 07:09:03,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:03,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:03,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:03,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:03,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:03,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:03,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 567 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-19 07:09:03,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 92 [2022-11-19 07:09:03,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-19 07:09:03,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:03,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-19 07:09:03,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:05,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:05,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:05,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:05,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:05,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:05,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:05,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 567 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-19 07:09:05,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 92 [2022-11-19 07:09:06,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:06,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-19 07:09:06,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:06,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-19 07:09:06,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:06,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:06,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:06,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:06,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:06,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-19 07:09:08,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:09:08,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:08,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:09,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:09,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:09,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:09:11,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:12,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:12,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:09:13,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:09:13,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:13,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:32,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:33,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:09:33,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:33,590 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:09:33,603 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:09:33,611 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:09:49,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:09:49,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:49,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:49,937 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:09:49,959 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:09:49,969 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:09:51,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:09:51,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 07:09:51,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:09:51,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 114 [2022-11-19 07:09:51,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 112 [2022-11-19 07:09:51,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 112 [2022-11-19 07:09:51,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 07:09:51,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:09:51,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:09:52,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 38 select indices, 38 select index equivalence classes, 410 disjoint index pairs (out of 703 index pairs), introduced 38 new quantified variables, introduced 0 case distinctions, treesize of input 339 treesize of output 115 [2022-11-19 07:09:52,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:09:52,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 38 select indices, 38 select index equivalence classes, 410 disjoint index pairs (out of 703 index pairs), introduced 38 new quantified variables, introduced 0 case distinctions, treesize of input 339 treesize of output 115 [2022-11-19 07:09:53,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:09:53,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 38 select indices, 38 select index equivalence classes, 410 disjoint index pairs (out of 703 index pairs), introduced 38 new quantified variables, introduced 0 case distinctions, treesize of input 339 treesize of output 115 [2022-11-19 07:09:54,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 38 select indices, 38 select index equivalence classes, 410 disjoint index pairs (out of 703 index pairs), introduced 38 new quantified variables, introduced 0 case distinctions, treesize of input 339 treesize of output 115 [2022-11-19 07:10:07,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:10:07,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:10:07,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:10:07,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:07,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:08,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:08,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:15,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:10:15,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:10:15,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:10:15,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:16,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:16,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:16,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:43,376 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 554 for LOIs [2022-11-19 07:10:44,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:10:44,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 07:10:45,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:10:45,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:10:45,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 07:10:45,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:10:45,652 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 1007 for LOIs [2022-11-19 07:10:47,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:10:48,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:10:49,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:49,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:49,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:49,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:49,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:49,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:49,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:49,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:49,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:49,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,096 INFO L217 Elim1Store]: Index analysis took 132 ms [2022-11-19 07:10:50,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:50,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 34 select indices, 34 select index equivalence classes, 603 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 1 [2022-11-19 07:10:53,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,749 INFO L217 Elim1Store]: Index analysis took 129 ms [2022-11-19 07:10:53,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:53,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 34 select indices, 34 select index equivalence classes, 603 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 1 [2022-11-19 07:10:57,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:57,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 34 select indices, 34 select index equivalence classes, 603 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 1 [2022-11-19 07:10:57,732 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 179 for LOIs [2022-11-19 07:10:57,762 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 90 for LOIs [2022-11-19 07:10:57,781 INFO L197 IcfgInterpreter]: Interpreting procedure superio_enter with input of size 144 for LOIs [2022-11-19 07:10:58,164 INFO L197 IcfgInterpreter]: Interpreting procedure __request_region with input of size 164 for LOIs [2022-11-19 07:10:58,314 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:11:10,582 WARN L233 SmtUtils]: Spent 11.31s on a formula simplification. DAG size of input: 929 DAG size of output: 585 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:11:19,387 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 1025 DAG size of output: 101 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:11:33,498 WARN L233 SmtUtils]: Spent 11.01s on a formula simplification. DAG size of input: 759 DAG size of output: 739 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:11:45,019 WARN L233 SmtUtils]: Spent 11.09s on a formula simplification. DAG size of input: 763 DAG size of output: 743 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:11:57,033 WARN L233 SmtUtils]: Spent 11.50s on a formula simplification. DAG size of input: 778 DAG size of output: 754 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:12:09,221 WARN L233 SmtUtils]: Spent 11.68s on a formula simplification. DAG size of input: 781 DAG size of output: 757 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:12:31,838 WARN L233 SmtUtils]: Spent 21.91s on a formula simplification. DAG size of input: 894 DAG size of output: 813 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:12:52,050 WARN L233 SmtUtils]: Spent 19.43s on a formula simplification. DAG size of input: 898 DAG size of output: 777 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:05,476 WARN L233 SmtUtils]: Spent 12.77s on a formula simplification. DAG size of input: 814 DAG size of output: 783 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:19,199 WARN L233 SmtUtils]: Spent 13.05s on a formula simplification. DAG size of input: 818 DAG size of output: 787 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:30,443 WARN L233 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 579 DAG size of output: 546 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:38,840 WARN L233 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 579 DAG size of output: 546 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:47,530 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 592 DAG size of output: 559 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:11,926 WARN L233 SmtUtils]: Spent 23.62s on a formula simplification. DAG size of input: 685 DAG size of output: 564 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:20,369 WARN L233 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 582 DAG size of output: 549 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:45,514 WARN L233 SmtUtils]: Spent 24.32s on a formula simplification. DAG size of input: 688 DAG size of output: 576 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:10,143 WARN L233 SmtUtils]: Spent 23.77s on a formula simplification. DAG size of input: 690 DAG size of output: 565 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:19,383 WARN L233 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 585 DAG size of output: 552 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:28,979 WARN L233 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 596 DAG size of output: 563 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:45,310 WARN L233 SmtUtils]: Spent 8.75s on a formula simplification. DAG size of input: 595 DAG size of output: 560 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:54,987 WARN L233 SmtUtils]: Spent 8.74s on a formula simplification. DAG size of input: 593 DAG size of output: 558 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:04,843 WARN L233 SmtUtils]: Spent 8.88s on a formula simplification. DAG size of input: 596 DAG size of output: 563 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:14,294 WARN L233 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 582 DAG size of output: 549 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:23,914 WARN L233 SmtUtils]: Spent 8.60s on a formula simplification. DAG size of input: 585 DAG size of output: 552 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:23,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1752723338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:23,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:16:23,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [6, 5, 5] total 56 [2022-11-19 07:16:23,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467363202] [2022-11-19 07:16:23,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:23,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-19 07:16:23,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:23,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-19 07:16:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2902, Unknown=0, NotChecked=0, Total=3080 [2022-11-19 07:16:23,927 INFO L87 Difference]: Start difference. First operand 1717 states and 2512 transitions. Second operand has 46 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 11 states have call successors, (56), 7 states have call predecessors, (56), 7 states have return successors, (55), 10 states have call predecessors, (55), 11 states have call successors, (55) [2022-11-19 07:17:06,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:06,653 INFO L93 Difference]: Finished difference Result 3395 states and 4964 transitions. [2022-11-19 07:17:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-19 07:17:06,655 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 11 states have call successors, (56), 7 states have call predecessors, (56), 7 states have return successors, (55), 10 states have call predecessors, (55), 11 states have call successors, (55) Word has length 370 [2022-11-19 07:17:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:06,665 INFO L225 Difference]: With dead ends: 3395 [2022-11-19 07:17:06,665 INFO L226 Difference]: Without dead ends: 1703 [2022-11-19 07:17:06,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1115 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 326.2s TimeCoverageRelationStatistics Valid=184, Invalid=3008, Unknown=0, NotChecked=0, Total=3192 [2022-11-19 07:17:06,673 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 33 mSDsluCounter, 16326 mSDsCounter, 0 mSdLazyCounter, 4876 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 16954 SdHoareTripleChecker+Invalid, 7011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2130 IncrementalHoareTripleChecker+Unchecked, 41.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:06,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 16954 Invalid, 7011 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5 Valid, 4876 Invalid, 0 Unknown, 2130 Unchecked, 41.7s Time] [2022-11-19 07:17:06,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2022-11-19 07:17:06,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1699. [2022-11-19 07:17:06,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 992 states have (on average 1.3387096774193548) internal successors, (1328), 1067 states have internal predecessors, (1328), 561 states have call successors, (561), 140 states have call predecessors, (561), 145 states have return successors, (589), 551 states have call predecessors, (589), 560 states have call successors, (589) [2022-11-19 07:17:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2478 transitions. [2022-11-19 07:17:06,926 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2478 transitions. Word has length 370 [2022-11-19 07:17:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:06,926 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2478 transitions. [2022-11-19 07:17:06,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 11 states have call successors, (56), 7 states have call predecessors, (56), 7 states have return successors, (55), 10 states have call predecessors, (55), 11 states have call successors, (55) [2022-11-19 07:17:06,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2478 transitions. [2022-11-19 07:17:06,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-19 07:17:06,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:06,937 INFO L195 NwaCegarLoop]: trace histogram [21, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:06,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:07,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-19 07:17:07,151 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:07,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:07,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1507507982, now seen corresponding path program 1 times [2022-11-19 07:17:07,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:07,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932513391] [2022-11-19 07:17:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:07,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-19 07:17:08,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:08,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932513391] [2022-11-19 07:17:08,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932513391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:08,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834011017] [2022-11-19 07:17:08,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:08,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:08,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:08,335 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:08,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:17:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:09,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 2528 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 07:17:09,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 118 proven. 1 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2022-11-19 07:17:09,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2022-11-19 07:17:10,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834011017] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:10,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1044299658] [2022-11-19 07:17:10,439 INFO L159 IcfgInterpreter]: Started Sifa with 189 locations of interest [2022-11-19 07:17:10,439 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:17:10,440 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:17:10,440 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:17:10,440 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:17:13,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:13,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:13,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-19 07:17:14,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 55 [2022-11-19 07:17:14,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:17:14,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 62 [2022-11-19 07:17:14,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-19 07:17:14,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 75 [2022-11-19 07:17:14,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:15,052 INFO L217 Elim1Store]: Index analysis took 552 ms [2022-11-19 07:17:24,116 WARN L233 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 748 DAG size of output: 324 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:17:24,117 INFO L321 Elim1Store]: treesize reduction 3078, result has 18.3 percent of original size [2022-11-19 07:17:24,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 28 select indices, 28 select index equivalence classes, 390 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 32 case distinctions, treesize of input 162 treesize of output 785 [2022-11-19 07:17:24,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:25,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:25,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:25,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:25,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:25,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:25,926 INFO L217 Elim1Store]: Index analysis took 1350 ms [2022-11-19 07:17:40,919 WARN L233 SmtUtils]: Spent 14.98s on a formula simplification. DAG size of input: 1077 DAG size of output: 451 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:17:40,922 INFO L321 Elim1Store]: treesize reduction 4376, result has 15.6 percent of original size [2022-11-19 07:17:40,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 35 select indices, 35 select index equivalence classes, 418 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 214 case distinctions, treesize of input 257 treesize of output 989 [2022-11-19 07:17:42,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:17:42,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:17:42,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-19 07:17:43,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:43,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:43,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:43,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:43,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:43,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:43,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-19 07:17:43,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:43,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:43,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:43,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:43,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:43,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:43,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 567 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-19 07:17:44,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 92 [2022-11-19 07:17:44,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:17:44,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:44,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-19 07:17:44,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-19 07:17:46,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 567 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-19 07:17:46,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-19 07:17:46,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 92 [2022-11-19 07:17:46,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:46,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-19 07:17:46,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:17:46,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-19 07:17:58,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:17:58,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:17:59,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:17:59,265 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:17:59,275 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:17:59,303 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:18:16,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:18:16,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:18:16,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:18:16,720 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:18:16,738 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:18:16,744 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:18:18,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:18:18,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:18:19,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:18:19,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:18:20,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:18:20,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:18:22,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:18:22,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:18:22,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:18:23,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:18:23,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:18:23,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:18:50,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:18:50,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:18:50,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 07:18:50,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 112 [2022-11-19 07:18:50,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 112 [2022-11-19 07:18:50,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 114 [2022-11-19 07:18:50,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:18:50,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 07:18:50,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:18:52,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 38 select indices, 38 select index equivalence classes, 410 disjoint index pairs (out of 703 index pairs), introduced 38 new quantified variables, introduced 0 case distinctions, treesize of input 339 treesize of output 115 [2022-11-19 07:18:52,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:18:52,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:52,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 38 select indices, 38 select index equivalence classes, 410 disjoint index pairs (out of 703 index pairs), introduced 38 new quantified variables, introduced 0 case distinctions, treesize of input 339 treesize of output 115 [2022-11-19 07:18:53,093 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:18:53,104 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:19:17,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:19:17,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 38 select indices, 38 select index equivalence classes, 410 disjoint index pairs (out of 703 index pairs), introduced 38 new quantified variables, introduced 0 case distinctions, treesize of input 339 treesize of output 115 [2022-11-19 07:19:17,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:17,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 38 select indices, 38 select index equivalence classes, 410 disjoint index pairs (out of 703 index pairs), introduced 38 new quantified variables, introduced 0 case distinctions, treesize of input 339 treesize of output 115 [2022-11-19 07:19:17,710 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:19:30,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:19:30,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:19:30,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:19:31,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:19:31,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:19:31,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:19:31,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:19:32,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:19:32,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:19:51,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:19:51,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 07:19:51,562 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:19:51,566 INFO L158 Benchmark]: Toolchain (without parser) took 719955.19ms. Allocated memory was 113.2MB in the beginning and 704.6MB in the end (delta: 591.4MB). Free memory was 73.5MB in the beginning and 518.0MB in the end (delta: -444.6MB). Peak memory consumption was 488.8MB. Max. memory is 16.1GB. [2022-11-19 07:19:51,566 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory was 84.3MB in the beginning and 84.3MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:19:51,566 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1352.71ms. Allocated memory is still 113.2MB. Free memory was 73.1MB in the beginning and 73.7MB in the end (delta: -607.1kB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2022-11-19 07:19:51,566 INFO L158 Benchmark]: Boogie Procedure Inliner took 161.28ms. Allocated memory is still 113.2MB. Free memory was 73.7MB in the beginning and 66.9MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:19:51,567 INFO L158 Benchmark]: Boogie Preprocessor took 160.71ms. Allocated memory is still 113.2MB. Free memory was 66.9MB in the beginning and 60.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:19:51,567 INFO L158 Benchmark]: RCFGBuilder took 3486.98ms. Allocated memory was 113.2MB in the beginning and 184.5MB in the end (delta: 71.3MB). Free memory was 60.6MB in the beginning and 97.0MB in the end (delta: -36.4MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2022-11-19 07:19:51,567 INFO L158 Benchmark]: TraceAbstraction took 714783.88ms. Allocated memory was 184.5MB in the beginning and 704.6MB in the end (delta: 520.1MB). Free memory was 95.9MB in the beginning and 518.0MB in the end (delta: -422.1MB). Peak memory consumption was 439.9MB. Max. memory is 16.1GB. [2022-11-19 07:19:51,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory was 84.3MB in the beginning and 84.3MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1352.71ms. Allocated memory is still 113.2MB. Free memory was 73.1MB in the beginning and 73.7MB in the end (delta: -607.1kB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 161.28ms. Allocated memory is still 113.2MB. Free memory was 73.7MB in the beginning and 66.9MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 160.71ms. Allocated memory is still 113.2MB. Free memory was 66.9MB in the beginning and 60.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 3486.98ms. Allocated memory was 113.2MB in the beginning and 184.5MB in the end (delta: 71.3MB). Free memory was 60.6MB in the beginning and 97.0MB in the end (delta: -36.4MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. * TraceAbstraction took 714783.88ms. Allocated memory was 184.5MB in the beginning and 704.6MB in the end (delta: 520.1MB). Free memory was 95.9MB in the beginning and 518.0MB in the end (delta: -422.1MB). Peak memory consumption was 439.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 07:19:51,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fe8c4b1a27642c802f8c97577aadb7892fddcd015ae43c580aa1247dba190651 --- 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-8393723 [2022-11-19 07:19:54,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:19:54,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:19:54,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:19:54,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:19:54,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:19:54,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:19:54,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:19:54,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:19:54,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:19:54,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:19:54,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:19:54,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:19:54,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:19:54,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:19:54,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:19:54,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:19:54,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:19:54,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:19:54,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:19:54,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:19:54,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:19:54,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:19:54,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:19:54,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:19:54,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:19:54,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:19:54,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:19:54,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:19:54,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:19:54,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:19:54,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:19:54,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:19:54,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:19:54,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:19:54,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:19:54,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:19:54,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:19:54,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:19:54,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:19:54,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:19:54,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:19:54,248 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:19:54,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:19:54,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:19:54,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:19:54,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:19:54,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:19:54,250 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:19:54,250 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:19:54,250 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:19:54,251 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:19:54,251 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:19:54,251 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:19:54,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:19:54,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:19:54,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:19:54,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:19:54,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:19:54,253 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:19:54,253 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:19:54,254 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:19:54,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:19:54,254 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:19:54,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:19:54,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:19:54,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:19:54,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:19:54,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:19:54,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:19:54,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:19:54,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:19:54,256 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:19:54,256 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:19:54,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:19:54,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:19:54,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:19:54,257 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe8c4b1a27642c802f8c97577aadb7892fddcd015ae43c580aa1247dba190651 [2022-11-19 07:19:54,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:19:54,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:19:54,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:19:54,683 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:19:54,684 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:19:54,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2022-11-19 07:19:54,775 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/data/44daa5263/b5f327f0cf794dd58c9d59c3397aba07/FLAG373e72c91 [2022-11-19 07:19:55,704 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:19:55,705 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2022-11-19 07:19:55,742 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/data/44daa5263/b5f327f0cf794dd58c9d59c3397aba07/FLAG373e72c91 [2022-11-19 07:19:56,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/data/44daa5263/b5f327f0cf794dd58c9d59c3397aba07 [2022-11-19 07:19:56,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:19:56,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:19:56,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:19:56,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:19:56,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:19:56,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:19:56" (1/1) ... [2022-11-19 07:19:56,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5b7c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:56, skipping insertion in model container [2022-11-19 07:19:56,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:19:56" (1/1) ... [2022-11-19 07:19:56,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:19:56,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:19:57,327 WARN L234 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_f6fe8a44-506d-4045-8cfe-ae7491a795f1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i[120162,120175] [2022-11-19 07:19:57,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:19:57,404 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:19:57,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:19:57,558 WARN L234 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_f6fe8a44-506d-4045-8cfe-ae7491a795f1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i[120162,120175] [2022-11-19 07:19:57,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:19:57,570 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:19:57,780 WARN L234 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_f6fe8a44-506d-4045-8cfe-ae7491a795f1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i[120162,120175] [2022-11-19 07:19:57,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:19:57,836 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:19:57,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57 WrapperNode [2022-11-19 07:19:57,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:19:57,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:19:57,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:19:57,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:19:57,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57" (1/1) ... [2022-11-19 07:19:57,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57" (1/1) ... [2022-11-19 07:19:57,994 INFO L138 Inliner]: procedures = 105, calls = 374, calls flagged for inlining = 31, calls inlined = 28, statements flattened = 1088 [2022-11-19 07:19:57,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:19:58,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:19:58,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:19:58,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:19:58,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57" (1/1) ... [2022-11-19 07:19:58,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57" (1/1) ... [2022-11-19 07:19:58,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57" (1/1) ... [2022-11-19 07:19:58,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57" (1/1) ... [2022-11-19 07:19:58,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57" (1/1) ... [2022-11-19 07:19:58,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57" (1/1) ... [2022-11-19 07:19:58,133 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57" (1/1) ... [2022-11-19 07:19:58,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57" (1/1) ... [2022-11-19 07:19:58,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:19:58,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:19:58,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:19:58,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:19:58,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57" (1/1) ... [2022-11-19 07:19:58,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:19:58,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:19:58,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:19:58,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:19:58,276 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_stop [2022-11-19 07:19:58,277 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_stop [2022-11-19 07:19:58,277 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_write [2022-11-19 07:19:58,277 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_write [2022-11-19 07:19:58,277 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_update_timeout [2022-11-19 07:19:58,278 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_update_timeout [2022-11-19 07:19:58,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-19 07:19:58,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:19:58,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:19:58,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:19:58,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:19:58,279 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:19:58,279 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_round_time [2022-11-19 07:19:58,280 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_round_time [2022-11-19 07:19:58,280 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2022-11-19 07:19:58,280 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2022-11-19 07:19:58,280 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:19:58,280 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:19:58,281 INFO L130 BoogieDeclarations]: Found specification of procedure superio_exit [2022-11-19 07:19:58,281 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_exit [2022-11-19 07:19:58,281 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-19 07:19:58,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-19 07:19:58,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:19:58,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:19:58,282 INFO L130 BoogieDeclarations]: Found specification of procedure superio_select [2022-11-19 07:19:58,282 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_select [2022-11-19 07:19:58,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-19 07:19:58,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-19 07:19:58,283 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:19:58,284 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:19:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure superio_enter [2022-11-19 07:19:58,284 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_enter [2022-11-19 07:19:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:19:58,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:19:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:19:58,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:19:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_keepalive [2022-11-19 07:19:58,286 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_keepalive [2022-11-19 07:19:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure superio_inb [2022-11-19 07:19:58,286 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_inb [2022-11-19 07:19:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure superio_outb [2022-11-19 07:19:58,286 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_outb [2022-11-19 07:19:58,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:19:58,287 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 07:19:58,287 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 07:19:58,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:19:58,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:19:58,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:19:58,289 INFO L130 BoogieDeclarations]: Found specification of procedure superio_inw [2022-11-19 07:19:58,290 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_inw [2022-11-19 07:19:58,290 INFO L130 BoogieDeclarations]: Found specification of procedure superio_outw [2022-11-19 07:19:58,291 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_outw [2022-11-19 07:19:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:19:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:19:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:19:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-19 07:19:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:19:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:19:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:19:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-19 07:19:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:19:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-19 07:19:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-19 07:19:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-19 07:19:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-19 07:19:58,294 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_start [2022-11-19 07:19:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_start [2022-11-19 07:19:58,295 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 07:19:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 07:19:58,295 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-19 07:19:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-19 07:19:58,296 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:19:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:19:58,296 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-19 07:19:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-19 07:19:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-19 07:19:58,297 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-19 07:19:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:19:58,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:19:58,748 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:19:58,753 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:19:59,024 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:20:03,776 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:20:03,800 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:20:03,801 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:20:03,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:20:03 BoogieIcfgContainer [2022-11-19 07:20:03,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:20:03,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:20:03,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:20:03,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:20:03,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:19:56" (1/3) ... [2022-11-19 07:20:03,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d530a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:20:03, skipping insertion in model container [2022-11-19 07:20:03,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:57" (2/3) ... [2022-11-19 07:20:03,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d530a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:20:03, skipping insertion in model container [2022-11-19 07:20:03,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:20:03" (3/3) ... [2022-11-19 07:20:03,830 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2022-11-19 07:20:03,853 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:20:03,853 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:20:03,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:20:03,943 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=FINITE_AUTOMATA, 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;@7c17ac82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:20:03,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:20:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 566 states, 354 states have (on average 1.4067796610169492) internal successors, (498), 386 states have internal predecessors, (498), 181 states have call successors, (181), 30 states have call predecessors, (181), 29 states have return successors, (177), 172 states have call predecessors, (177), 177 states have call successors, (177) [2022-11-19 07:20:03,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-19 07:20:03,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:03,981 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:03,982 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:03,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:03,990 INFO L85 PathProgramCache]: Analyzing trace with hash 360713030, now seen corresponding path program 1 times [2022-11-19 07:20:04,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:04,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891251979] [2022-11-19 07:20:04,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:04,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:04,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:04,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:04,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:20:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:04,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:20:04,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-19 07:20:05,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:05,030 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:05,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891251979] [2022-11-19 07:20:05,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891251979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:05,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:20:05,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:20:05,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614454444] [2022-11-19 07:20:05,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:05,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:20:05,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:05,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:20:05,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:20:05,077 INFO L87 Difference]: Start difference. First operand has 566 states, 354 states have (on average 1.4067796610169492) internal successors, (498), 386 states have internal predecessors, (498), 181 states have call successors, (181), 30 states have call predecessors, (181), 29 states have return successors, (177), 172 states have call predecessors, (177), 177 states have call successors, (177) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:20:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:05,227 INFO L93 Difference]: Finished difference Result 1127 states and 1737 transitions. [2022-11-19 07:20:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:20:05,229 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 137 [2022-11-19 07:20:05,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:05,260 INFO L225 Difference]: With dead ends: 1127 [2022-11-19 07:20:05,261 INFO L226 Difference]: Without dead ends: 555 [2022-11-19 07:20:05,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:20:05,279 INFO L413 NwaCegarLoop]: 852 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, 852 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 [2022-11-19 07:20:05,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:20:05,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-11-19 07:20:05,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2022-11-19 07:20:05,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 349 states have (on average 1.3925501432664757) internal successors, (486), 375 states have internal predecessors, (486), 177 states have call successors, (177), 29 states have call predecessors, (177), 28 states have return successors, (176), 171 states have call predecessors, (176), 176 states have call successors, (176) [2022-11-19 07:20:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 839 transitions. [2022-11-19 07:20:05,387 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 839 transitions. Word has length 137 [2022-11-19 07:20:05,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:05,388 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 839 transitions. [2022-11-19 07:20:05,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:20:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 839 transitions. [2022-11-19 07:20:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-19 07:20:05,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:05,395 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:05,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:05,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:05,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1314730046, now seen corresponding path program 1 times [2022-11-19 07:20:05,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:05,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405534997] [2022-11-19 07:20:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:05,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:05,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:05,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:05,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:20:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:06,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:20:06,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-19 07:20:06,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:06,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:06,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405534997] [2022-11-19 07:20:06,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405534997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:06,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:20:06,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:20:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156956352] [2022-11-19 07:20:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:06,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:20:06,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:20:06,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:20:06,755 INFO L87 Difference]: Start difference. First operand 555 states and 839 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:20:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:07,013 INFO L93 Difference]: Finished difference Result 1102 states and 1671 transitions. [2022-11-19 07:20:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:20:07,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2022-11-19 07:20:07,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:07,019 INFO L225 Difference]: With dead ends: 1102 [2022-11-19 07:20:07,020 INFO L226 Difference]: Without dead ends: 556 [2022-11-19 07:20:07,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:20:07,024 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 3 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:07,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2498 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:20:07,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-11-19 07:20:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2022-11-19 07:20:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 350 states have (on average 1.3914285714285715) internal successors, (487), 376 states have internal predecessors, (487), 177 states have call successors, (177), 29 states have call predecessors, (177), 28 states have return successors, (176), 171 states have call predecessors, (176), 176 states have call successors, (176) [2022-11-19 07:20:07,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 840 transitions. [2022-11-19 07:20:07,069 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 840 transitions. Word has length 137 [2022-11-19 07:20:07,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:07,071 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 840 transitions. [2022-11-19 07:20:07,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:20:07,072 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 840 transitions. [2022-11-19 07:20:07,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-19 07:20:07,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:07,078 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:07,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:07,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:07,302 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:07,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:07,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1589175608, now seen corresponding path program 1 times [2022-11-19 07:20:07,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:07,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409695684] [2022-11-19 07:20:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:07,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:07,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:07,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:07,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 07:20:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:08,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:20:08,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-19 07:20:08,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:20:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-19 07:20:08,878 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:08,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409695684] [2022-11-19 07:20:08,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409695684] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:20:08,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [245715812] [2022-11-19 07:20:08,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:08,880 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:08,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:20:08,882 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:20:08,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-19 07:20:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:09,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:20:09,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-19 07:20:09,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:09,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [245715812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:09,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:20:09,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 07:20:09,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852237919] [2022-11-19 07:20:09,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:09,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:20:09,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:09,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:20:09,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:09,666 INFO L87 Difference]: Start difference. First operand 556 states and 840 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-19 07:20:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:09,793 INFO L93 Difference]: Finished difference Result 567 states and 850 transitions. [2022-11-19 07:20:09,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:20:09,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 143 [2022-11-19 07:20:09,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:09,799 INFO L225 Difference]: With dead ends: 567 [2022-11-19 07:20:09,799 INFO L226 Difference]: Without dead ends: 562 [2022-11-19 07:20:09,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:09,803 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 834 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:09,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 842 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:20:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-11-19 07:20:09,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 557. [2022-11-19 07:20:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 351 states have (on average 1.3903133903133904) internal successors, (488), 377 states have internal predecessors, (488), 177 states have call successors, (177), 29 states have call predecessors, (177), 28 states have return successors, (176), 171 states have call predecessors, (176), 176 states have call successors, (176) [2022-11-19 07:20:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 841 transitions. [2022-11-19 07:20:09,874 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 841 transitions. Word has length 143 [2022-11-19 07:20:09,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:09,875 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 841 transitions. [2022-11-19 07:20:09,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-19 07:20:09,875 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 841 transitions. [2022-11-19 07:20:09,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-19 07:20:09,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:09,886 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:09,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:10,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:10,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:10,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:10,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:10,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1646433910, now seen corresponding path program 1 times [2022-11-19 07:20:10,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:10,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731758557] [2022-11-19 07:20:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:10,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:10,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:10,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:10,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:20:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:11,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:20:11,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-19 07:20:11,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:20:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-19 07:20:11,800 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:11,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731758557] [2022-11-19 07:20:11,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731758557] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:20:11,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2003906615] [2022-11-19 07:20:11,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:11,801 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:11,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:20:11,803 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:20:11,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 07:20:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:12,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:20:12,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-19 07:20:13,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:13,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2003906615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:13,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:20:13,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 07:20:13,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21461597] [2022-11-19 07:20:13,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:13,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:20:13,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:13,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:20:13,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:13,460 INFO L87 Difference]: Start difference. First operand 557 states and 841 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-19 07:20:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:13,606 INFO L93 Difference]: Finished difference Result 1085 states and 1643 transitions. [2022-11-19 07:20:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:20:13,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 143 [2022-11-19 07:20:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:13,621 INFO L225 Difference]: With dead ends: 1085 [2022-11-19 07:20:13,622 INFO L226 Difference]: Without dead ends: 1046 [2022-11-19 07:20:13,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:13,626 INFO L413 NwaCegarLoop]: 1068 mSDtfsCounter, 759 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:13,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1867 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:20:13,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-11-19 07:20:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1045. [2022-11-19 07:20:13,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 664 states have (on average 1.3990963855421688) internal successors, (929), 710 states have internal predecessors, (929), 325 states have call successors, (325), 56 states have call predecessors, (325), 55 states have return successors, (324), 316 states have call predecessors, (324), 324 states have call successors, (324) [2022-11-19 07:20:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1578 transitions. [2022-11-19 07:20:13,752 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1578 transitions. Word has length 143 [2022-11-19 07:20:13,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:13,753 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1578 transitions. [2022-11-19 07:20:13,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-19 07:20:13,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1578 transitions. [2022-11-19 07:20:13,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-19 07:20:13,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:13,759 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:13,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:13,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:14,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:14,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash -319239711, now seen corresponding path program 1 times [2022-11-19 07:20:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:14,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600740697] [2022-11-19 07:20:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:14,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:14,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:14,178 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:14,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 07:20:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:14,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:20:14,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-19 07:20:15,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:20:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-19 07:20:15,660 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:15,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600740697] [2022-11-19 07:20:15,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600740697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:20:15,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1299529575] [2022-11-19 07:20:15,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:15,661 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:15,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:20:15,663 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:20:15,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-19 07:20:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:16,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:20:16,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-11-19 07:20:16,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:16,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1299529575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:16,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:20:16,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 07:20:16,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925256981] [2022-11-19 07:20:16,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:16,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:20:16,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:16,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:20:16,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:16,495 INFO L87 Difference]: Start difference. First operand 1045 states and 1578 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:20:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:16,834 INFO L93 Difference]: Finished difference Result 2514 states and 3777 transitions. [2022-11-19 07:20:16,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:20:16,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 194 [2022-11-19 07:20:16,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:16,845 INFO L225 Difference]: With dead ends: 2514 [2022-11-19 07:20:16,845 INFO L226 Difference]: Without dead ends: 1498 [2022-11-19 07:20:16,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:16,850 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 406 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:16,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1686 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:20:16,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2022-11-19 07:20:16,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1489. [2022-11-19 07:20:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 926 states have (on average 1.3876889848812095) internal successors, (1285), 992 states have internal predecessors, (1285), 472 states have call successors, (472), 91 states have call predecessors, (472), 90 states have return successors, (471), 459 states have call predecessors, (471), 471 states have call successors, (471) [2022-11-19 07:20:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2228 transitions. [2022-11-19 07:20:16,969 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2228 transitions. Word has length 194 [2022-11-19 07:20:16,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:16,970 INFO L495 AbstractCegarLoop]: Abstraction has 1489 states and 2228 transitions. [2022-11-19 07:20:16,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:20:16,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2228 transitions. [2022-11-19 07:20:16,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-11-19 07:20:16,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:16,982 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:16,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:17,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:17,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:17,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:17,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:17,389 INFO L85 PathProgramCache]: Analyzing trace with hash -490450727, now seen corresponding path program 1 times [2022-11-19 07:20:17,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:17,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710279412] [2022-11-19 07:20:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:17,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:17,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:17,391 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:17,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-19 07:20:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:18,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:20:18,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 152 proven. 1 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2022-11-19 07:20:18,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:20:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:20:19,406 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:19,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710279412] [2022-11-19 07:20:19,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710279412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:20:19,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1697369357] [2022-11-19 07:20:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:19,407 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:19,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:20:19,408 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:20:19,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-19 07:20:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:20,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:20:20,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-11-19 07:20:21,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:21,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1697369357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:21,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:20:21,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 07:20:21,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477630928] [2022-11-19 07:20:21,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:21,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:20:21,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:21,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:20:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:21,977 INFO L87 Difference]: Start difference. First operand 1489 states and 2228 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-19 07:20:22,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:22,128 INFO L93 Difference]: Finished difference Result 2939 states and 4407 transitions. [2022-11-19 07:20:22,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:20:22,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 397 [2022-11-19 07:20:22,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:22,139 INFO L225 Difference]: With dead ends: 2939 [2022-11-19 07:20:22,139 INFO L226 Difference]: Without dead ends: 1489 [2022-11-19 07:20:22,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1181 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:22,146 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 701 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:22,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 837 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:20:22,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2022-11-19 07:20:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1489. [2022-11-19 07:20:22,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 926 states have (on average 1.3833693304535637) internal successors, (1281), 992 states have internal predecessors, (1281), 472 states have call successors, (472), 91 states have call predecessors, (472), 90 states have return successors, (471), 459 states have call predecessors, (471), 471 states have call successors, (471) [2022-11-19 07:20:22,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2224 transitions. [2022-11-19 07:20:22,299 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2224 transitions. Word has length 397 [2022-11-19 07:20:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:22,300 INFO L495 AbstractCegarLoop]: Abstraction has 1489 states and 2224 transitions. [2022-11-19 07:20:22,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-19 07:20:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2224 transitions. [2022-11-19 07:20:22,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-11-19 07:20:22,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:22,313 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:22,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:22,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:22,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:22,727 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:22,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:22,727 INFO L85 PathProgramCache]: Analyzing trace with hash -745222524, now seen corresponding path program 1 times [2022-11-19 07:20:22,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:22,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042958717] [2022-11-19 07:20:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:22,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:22,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:22,729 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:22,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 07:20:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:23,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:20:23,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 152 proven. 1 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2022-11-19 07:20:23,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:20:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2022-11-19 07:20:24,672 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:24,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042958717] [2022-11-19 07:20:24,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042958717] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:20:24,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [440993888] [2022-11-19 07:20:24,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:24,672 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:24,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:20:24,673 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:20:24,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-19 07:20:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:25,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:20:25,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2022-11-19 07:20:27,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:27,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [440993888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:27,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:20:27,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 07:20:27,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942674986] [2022-11-19 07:20:27,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:27,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:20:27,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:27,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:20:27,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:27,774 INFO L87 Difference]: Start difference. First operand 1489 states and 2224 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-19 07:20:27,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:27,965 INFO L93 Difference]: Finished difference Result 2939 states and 4399 transitions. [2022-11-19 07:20:27,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:20:27,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 394 [2022-11-19 07:20:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:27,979 INFO L225 Difference]: With dead ends: 2939 [2022-11-19 07:20:27,979 INFO L226 Difference]: Without dead ends: 1489 [2022-11-19 07:20:27,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1179 GetRequests, 1172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:27,987 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 659 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:27,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 836 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:20:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2022-11-19 07:20:28,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1489. [2022-11-19 07:20:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 926 states have (on average 1.381209503239741) internal successors, (1279), 992 states have internal predecessors, (1279), 472 states have call successors, (472), 91 states have call predecessors, (472), 90 states have return successors, (471), 459 states have call predecessors, (471), 471 states have call successors, (471) [2022-11-19 07:20:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2222 transitions. [2022-11-19 07:20:28,154 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2222 transitions. Word has length 394 [2022-11-19 07:20:28,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:28,159 INFO L495 AbstractCegarLoop]: Abstraction has 1489 states and 2222 transitions. [2022-11-19 07:20:28,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-19 07:20:28,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2222 transitions. [2022-11-19 07:20:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-11-19 07:20:28,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:28,171 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:28,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:28,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:28,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:28,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2063062432, now seen corresponding path program 1 times [2022-11-19 07:20:28,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:28,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778976611] [2022-11-19 07:20:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:28,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:28,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:28,604 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:28,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-19 07:20:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:29,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:20:29,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 152 proven. 1 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2022-11-19 07:20:29,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:20:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 653 trivial. 0 not checked. [2022-11-19 07:20:30,497 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:30,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778976611] [2022-11-19 07:20:30,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778976611] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:20:30,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1176812467] [2022-11-19 07:20:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:30,497 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:30,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:20:30,498 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:20:30,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-19 07:20:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:31,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:20:31,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2022-11-19 07:20:31,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:31,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1176812467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:31,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:20:31,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-11-19 07:20:31,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66653477] [2022-11-19 07:20:31,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:31,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:20:31,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:31,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:20:31,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:20:31,699 INFO L87 Difference]: Start difference. First operand 1489 states and 2222 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-19 07:20:32,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:32,193 INFO L93 Difference]: Finished difference Result 3468 states and 5269 transitions. [2022-11-19 07:20:32,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:20:32,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) Word has length 400 [2022-11-19 07:20:32,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:32,211 INFO L225 Difference]: With dead ends: 3468 [2022-11-19 07:20:32,212 INFO L226 Difference]: Without dead ends: 2018 [2022-11-19 07:20:32,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1188 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:20:32,218 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 259 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 4378 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:32,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 4378 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:20:32,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-11-19 07:20:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1505. [2022-11-19 07:20:32,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 938 states have (on average 1.3763326226012793) internal successors, (1291), 1004 states have internal predecessors, (1291), 472 states have call successors, (472), 91 states have call predecessors, (472), 94 states have return successors, (493), 463 states have call predecessors, (493), 471 states have call successors, (493) [2022-11-19 07:20:32,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2256 transitions. [2022-11-19 07:20:32,419 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2256 transitions. Word has length 400 [2022-11-19 07:20:32,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:32,420 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2256 transitions. [2022-11-19 07:20:32,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-19 07:20:32,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2256 transitions. [2022-11-19 07:20:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-11-19 07:20:32,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:32,427 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:32,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:32,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:32,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:32,842 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:32,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:32,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1069442813, now seen corresponding path program 1 times [2022-11-19 07:20:32,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:32,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419689421] [2022-11-19 07:20:32,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:32,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:32,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:32,844 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:32,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-19 07:20:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:33,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:20:33,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 152 proven. 1 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2022-11-19 07:20:34,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:20:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 827 trivial. 0 not checked. [2022-11-19 07:20:34,708 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:34,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419689421] [2022-11-19 07:20:34,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419689421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:20:34,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [416217980] [2022-11-19 07:20:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:34,709 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:34,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:20:34,711 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:20:34,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-19 07:20:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:35,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:20:35,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-11-19 07:20:36,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:36,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [416217980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:36,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:20:36,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-11-19 07:20:36,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754935806] [2022-11-19 07:20:36,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:36,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:20:36,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:36,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:20:36,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:20:36,013 INFO L87 Difference]: Start difference. First operand 1505 states and 2256 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-19 07:20:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:36,519 INFO L93 Difference]: Finished difference Result 3492 states and 5311 transitions. [2022-11-19 07:20:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:20:36,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) Word has length 417 [2022-11-19 07:20:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:36,533 INFO L225 Difference]: With dead ends: 3492 [2022-11-19 07:20:36,533 INFO L226 Difference]: Without dead ends: 2026 [2022-11-19 07:20:36,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1239 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:20:36,542 INFO L413 NwaCegarLoop]: 1221 mSDtfsCounter, 259 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 4534 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:36,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 4534 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:20:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2022-11-19 07:20:36,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1513. [2022-11-19 07:20:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 946 states have (on average 1.3731501057082451) internal successors, (1299), 1008 states have internal predecessors, (1299), 472 states have call successors, (472), 91 states have call predecessors, (472), 94 states have return successors, (493), 467 states have call predecessors, (493), 471 states have call successors, (493) [2022-11-19 07:20:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2264 transitions. [2022-11-19 07:20:36,732 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2264 transitions. Word has length 417 [2022-11-19 07:20:36,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:36,733 INFO L495 AbstractCegarLoop]: Abstraction has 1513 states and 2264 transitions. [2022-11-19 07:20:36,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-19 07:20:36,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2264 transitions. [2022-11-19 07:20:36,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-11-19 07:20:36,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:36,741 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:36,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:36,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:37,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:37,164 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:37,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:37,164 INFO L85 PathProgramCache]: Analyzing trace with hash -280055110, now seen corresponding path program 2 times [2022-11-19 07:20:37,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:37,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244669761] [2022-11-19 07:20:37,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:20:37,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:37,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:37,168 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:37,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-19 07:20:39,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:20:39,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:20:39,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:20:39,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 152 proven. 1 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2022-11-19 07:20:40,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:20:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1054 trivial. 0 not checked. [2022-11-19 07:20:40,747 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:40,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244669761] [2022-11-19 07:20:40,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244669761] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:20:40,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1029575341] [2022-11-19 07:20:40,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:20:40,748 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:40,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:20:40,752 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:20:40,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-19 07:20:46,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:20:46,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:20:46,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:20:46,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2022-11-19 07:20:47,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:47,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1029575341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:47,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:20:47,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-19 07:20:47,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14202743] [2022-11-19 07:20:47,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:47,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:20:47,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:47,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:20:47,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:20:47,292 INFO L87 Difference]: Start difference. First operand 1513 states and 2264 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 4 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2022-11-19 07:20:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:48,539 INFO L93 Difference]: Finished difference Result 3794 states and 5821 transitions. [2022-11-19 07:20:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:20:48,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 4 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) Word has length 434 [2022-11-19 07:20:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:48,559 INFO L225 Difference]: With dead ends: 3794 [2022-11-19 07:20:48,559 INFO L226 Difference]: Without dead ends: 2320 [2022-11-19 07:20:48,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1300 GetRequests, 1291 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:20:48,566 INFO L413 NwaCegarLoop]: 1194 mSDtfsCounter, 1260 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:48,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 2077 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:20:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2022-11-19 07:20:48,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1757. [2022-11-19 07:20:48,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1072 states have (on average 1.3759328358208955) internal successors, (1475), 1158 states have internal predecessors, (1475), 590 states have call successors, (590), 91 states have call predecessors, (590), 94 states have return successors, (615), 581 states have call predecessors, (615), 589 states have call successors, (615) [2022-11-19 07:20:48,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2680 transitions. [2022-11-19 07:20:48,894 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2680 transitions. Word has length 434 [2022-11-19 07:20:48,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:48,896 INFO L495 AbstractCegarLoop]: Abstraction has 1757 states and 2680 transitions. [2022-11-19 07:20:48,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 4 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2022-11-19 07:20:48,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2680 transitions. [2022-11-19 07:20:48,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-19 07:20:48,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:48,905 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:48,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:49,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:49,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:49,327 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:49,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:49,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1202562819, now seen corresponding path program 1 times [2022-11-19 07:20:49,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:49,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059917012] [2022-11-19 07:20:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:49,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:49,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:49,330 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:49,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-19 07:20:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:50,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:20:50,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 152 proven. 1 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2022-11-19 07:20:50,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:20:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1054 trivial. 0 not checked. [2022-11-19 07:20:51,443 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:51,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059917012] [2022-11-19 07:20:51,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059917012] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:20:51,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1186562894] [2022-11-19 07:20:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:51,444 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:51,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:20:51,449 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:20:51,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-19 07:20:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:52,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:20:52,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2022-11-19 07:20:52,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:52,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1186562894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:52,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:20:52,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 07:20:52,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375457836] [2022-11-19 07:20:52,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:52,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:20:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:52,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:20:52,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:52,682 INFO L87 Difference]: Start difference. First operand 1757 states and 2680 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-19 07:20:53,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:53,198 INFO L93 Difference]: Finished difference Result 4024 states and 6203 transitions. [2022-11-19 07:20:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:20:53,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 447 [2022-11-19 07:20:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:53,219 INFO L225 Difference]: With dead ends: 4024 [2022-11-19 07:20:53,219 INFO L226 Difference]: Without dead ends: 2306 [2022-11-19 07:20:53,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1338 GetRequests, 1331 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:53,229 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 320 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:53,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1674 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:20:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2022-11-19 07:20:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1793. [2022-11-19 07:20:53,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1108 states have (on average 1.3601083032490975) internal successors, (1507), 1194 states have internal predecessors, (1507), 590 states have call successors, (590), 91 states have call predecessors, (590), 94 states have return successors, (615), 581 states have call predecessors, (615), 589 states have call successors, (615) [2022-11-19 07:20:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2712 transitions. [2022-11-19 07:20:53,541 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2712 transitions. Word has length 447 [2022-11-19 07:20:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:53,542 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2712 transitions. [2022-11-19 07:20:53,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-19 07:20:53,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2712 transitions. [2022-11-19 07:20:53,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2022-11-19 07:20:53,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:53,552 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:53,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2022-11-19 07:20:53,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:53,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:53,963 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:53,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:53,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1935864659, now seen corresponding path program 1 times [2022-11-19 07:20:53,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:53,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724553214] [2022-11-19 07:20:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:53,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:53,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:53,966 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:53,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-19 07:20:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:55,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:20:55,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 152 proven. 1 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2022-11-19 07:20:55,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:20:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2022-11-19 07:20:56,027 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:56,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724553214] [2022-11-19 07:20:56,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724553214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:20:56,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [795452791] [2022-11-19 07:20:56,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:56,027 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:56,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:20:56,028 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:20:56,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-19 07:20:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:57,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:20:57,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2022-11-19 07:20:57,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:57,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [795452791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:57,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:20:57,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-11-19 07:20:57,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133451654] [2022-11-19 07:20:57,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:57,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:20:57,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:57,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:20:57,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:20:57,545 INFO L87 Difference]: Start difference. First operand 1793 states and 2712 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-19 07:20:59,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:21:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:21:00,219 INFO L93 Difference]: Finished difference Result 3576 states and 5412 transitions. [2022-11-19 07:21:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:21:00,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 456 [2022-11-19 07:21:00,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:21:00,231 INFO L225 Difference]: With dead ends: 3576 [2022-11-19 07:21:00,232 INFO L226 Difference]: Without dead ends: 1728 [2022-11-19 07:21:00,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1368 GetRequests, 1356 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:21:00,242 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 34 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3294 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:21:00,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3294 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:21:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2022-11-19 07:21:00,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1611. [2022-11-19 07:21:00,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 997 states have (on average 1.345035105315948) internal successors, (1341), 1073 states have internal predecessors, (1341), 520 states have call successors, (520), 90 states have call predecessors, (520), 93 states have return successors, (539), 507 states have call predecessors, (539), 519 states have call successors, (539) [2022-11-19 07:21:00,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2400 transitions. [2022-11-19 07:21:00,524 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2400 transitions. Word has length 456 [2022-11-19 07:21:00,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:21:00,525 INFO L495 AbstractCegarLoop]: Abstraction has 1611 states and 2400 transitions. [2022-11-19 07:21:00,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-19 07:21:00,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2400 transitions. [2022-11-19 07:21:00,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-19 07:21:00,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:21:00,533 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:21:00,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-19 07:21:00,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-19 07:21:00,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:21:00,947 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:21:00,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:21:00,947 INFO L85 PathProgramCache]: Analyzing trace with hash -348444345, now seen corresponding path program 1 times [2022-11-19 07:21:00,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:21:00,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177442369] [2022-11-19 07:21:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:21:00,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:21:00,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:21:00,950 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:21:00,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-19 07:21:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:21:02,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:21:02,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:21:02,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 152 proven. 1 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2022-11-19 07:21:02,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:21:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1054 trivial. 0 not checked. [2022-11-19 07:21:02,929 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:21:02,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177442369] [2022-11-19 07:21:02,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177442369] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:21:02,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1030180857] [2022-11-19 07:21:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:21:02,930 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:21:02,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:21:02,931 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:21:02,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6fe8a44-506d-4045-8cfe-ae7491a795f1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-19 07:21:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:21:04,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:21:04,178 INFO L286 TraceCheckSpWp]: Computing forward predicates...