./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0235-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- 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 06:33:58,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:33:58,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:33:58,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:33:58,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:33:58,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:33:58,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:33:58,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:33:58,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:33:58,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:33:58,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:33:58,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:33:58,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:33:58,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:33:58,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:33:58,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:33:58,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:33:58,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:33:58,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:33:58,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:33:58,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:33:58,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:33:58,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:33:58,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:33:58,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:33:58,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:33:58,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:33:58,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:33:58,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:33:58,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:33:58,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:33:58,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:33:58,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:33:58,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:33:58,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:33:58,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:33:58,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:33:58,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:33:58,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:33:58,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:33:58,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:33:58,666 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 06:33:58,691 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:33:58,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:33:58,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:33:58,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:33:58,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:33:58,693 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:33:58,693 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:33:58,694 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:33:58,694 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:33:58,694 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:33:58,694 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:33:58,695 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:33:58,695 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:33:58,695 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:33:58,695 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:33:58,696 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:33:58,696 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:33:58,696 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:33:58,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:33:58,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:33:58,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:33:58,698 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:33:58,698 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:33:58,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:33:58,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:33:58,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:33:58,699 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:33:58,699 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:33:58,699 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:33:58,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:33:58,700 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:33:58,700 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:33:58,700 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:33:58,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:33:58,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:33:58,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:33:58,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:33:58,701 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:33:58,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:33:58,702 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:33:58,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:33:58,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:33:58,703 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_d0fa45fb-37f6-45fd-8d70-290d251a6226/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2022-11-19 06:33:59,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:33:59,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:33:59,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:33:59,042 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:33:59,043 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:33:59,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-19 06:33:59,145 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/data/5dd3f5f7f/4b883e0b3dde4f8abb87099e4ae53aaf/FLAG3d2b0a2ba [2022-11-19 06:33:59,856 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:33:59,856 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-19 06:33:59,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/data/5dd3f5f7f/4b883e0b3dde4f8abb87099e4ae53aaf/FLAG3d2b0a2ba [2022-11-19 06:34:00,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/data/5dd3f5f7f/4b883e0b3dde4f8abb87099e4ae53aaf [2022-11-19 06:34:00,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:34:00,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:34:00,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:34:00,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:34:00,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:34:00,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f85f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00, skipping insertion in model container [2022-11-19 06:34:00,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:34:00,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:34:00,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:34:00,737 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:34:00,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:34:00,851 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:34:00,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00 WrapperNode [2022-11-19 06:34:00,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:34:00,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:34:00,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:34:00,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:34:00,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,918 INFO L138 Inliner]: procedures = 188, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2022-11-19 06:34:00,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:34:00,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:34:00,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:34:00,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:34:00,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,978 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:34:00,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:34:00,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:34:00,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:34:00,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00" (1/1) ... [2022-11-19 06:34:00,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:34:01,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:01,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:34:01,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:34:01,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:34:01,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:34:01,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:34:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:34:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-19 06:34:01,066 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-19 06:34:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:34:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:34:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-11-19 06:34:01,066 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-11-19 06:34:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:34:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:34:01,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:34:01,225 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:34:01,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:34:02,174 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:34:02,271 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:34:02,271 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-19 06:34:02,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:34:02 BoogieIcfgContainer [2022-11-19 06:34:02,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:34:02,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:34:02,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:34:02,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:34:02,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:34:00" (1/3) ... [2022-11-19 06:34:02,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25957de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:34:02, skipping insertion in model container [2022-11-19 06:34:02,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:00" (2/3) ... [2022-11-19 06:34:02,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25957de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:34:02, skipping insertion in model container [2022-11-19 06:34:02,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:34:02" (3/3) ... [2022-11-19 06:34:02,292 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2022-11-19 06:34:02,318 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:34:02,319 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2022-11-19 06:34:02,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:34:02,383 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@42a76298, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:34:02,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2022-11-19 06:34:02,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 102 states have (on average 2.1372549019607843) internal successors, (218), 187 states have internal predecessors, (218), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:34:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:34:02,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:02,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:34:02,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash 450579, now seen corresponding path program 1 times [2022-11-19 06:34:02,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:02,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473696743] [2022-11-19 06:34:02,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:02,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:02,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:02,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473696743] [2022-11-19 06:34:02,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473696743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:02,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:02,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:34:02,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879349005] [2022-11-19 06:34:02,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:02,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:34:02,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:02,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:34:02,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:34:02,625 INFO L87 Difference]: Start difference. First operand has 201 states, 102 states have (on average 2.1372549019607843) internal successors, (218), 187 states have internal predecessors, (218), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:02,780 INFO L93 Difference]: Finished difference Result 201 states and 230 transitions. [2022-11-19 06:34:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:34:02,785 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 06:34:02,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:02,803 INFO L225 Difference]: With dead ends: 201 [2022-11-19 06:34:02,803 INFO L226 Difference]: Without dead ends: 200 [2022-11-19 06:34:02,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 06:34:02,809 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:02,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:34:02,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-19 06:34:02,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-11-19 06:34:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 102 states have (on average 2.0294117647058822) internal successors, (207), 186 states have internal predecessors, (207), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:34:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 229 transitions. [2022-11-19 06:34:02,862 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 229 transitions. Word has length 3 [2022-11-19 06:34:02,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:02,863 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 229 transitions. [2022-11-19 06:34:02,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:02,863 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 229 transitions. [2022-11-19 06:34:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:34:02,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:02,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:34:02,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:34:02,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:02,865 INFO L85 PathProgramCache]: Analyzing trace with hash 429096002, now seen corresponding path program 1 times [2022-11-19 06:34:02,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:02,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426312343] [2022-11-19 06:34:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:02,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:02,892 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:34:02,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492367015] [2022-11-19 06:34:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:02,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:02,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:02,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:02,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:34:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:03,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:34:03,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:03,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-19 06:34:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:03,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:03,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:03,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426312343] [2022-11-19 06:34:03,115 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:34:03,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492367015] [2022-11-19 06:34:03,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492367015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:03,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:03,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:34:03,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802945780] [2022-11-19 06:34:03,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:03,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:03,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:03,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:03,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:03,121 INFO L87 Difference]: Start difference. First operand 200 states and 229 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:03,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:03,334 INFO L93 Difference]: Finished difference Result 199 states and 228 transitions. [2022-11-19 06:34:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:03,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:34:03,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:03,337 INFO L225 Difference]: With dead ends: 199 [2022-11-19 06:34:03,337 INFO L226 Difference]: Without dead ends: 199 [2022-11-19 06:34:03,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 06:34:03,339 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 5 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:03,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 339 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:34:03,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-19 06:34:03,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-11-19 06:34:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 102 states have (on average 2.019607843137255) internal successors, (206), 185 states have internal predecessors, (206), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:34:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 228 transitions. [2022-11-19 06:34:03,356 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 228 transitions. Word has length 5 [2022-11-19 06:34:03,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:03,356 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 228 transitions. [2022-11-19 06:34:03,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 228 transitions. [2022-11-19 06:34:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:34:03,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:03,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:34:03,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 06:34:03,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:03,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:03,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:03,568 INFO L85 PathProgramCache]: Analyzing trace with hash 417074595, now seen corresponding path program 1 times [2022-11-19 06:34:03,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:03,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522345350] [2022-11-19 06:34:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:03,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:03,601 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:34:03,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478106256] [2022-11-19 06:34:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:03,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:03,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:03,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:03,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:34:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:03,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 06:34:03,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:03,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-19 06:34:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:03,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:03,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:03,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522345350] [2022-11-19 06:34:03,855 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:34:03,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478106256] [2022-11-19 06:34:03,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478106256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:03,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:03,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:34:03,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434897602] [2022-11-19 06:34:03,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:03,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:34:03,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:03,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:34:03,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:34:03,861 INFO L87 Difference]: Start difference. First operand 199 states and 228 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:04,123 INFO L93 Difference]: Finished difference Result 204 states and 233 transitions. [2022-11-19 06:34:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:34:04,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 06:34:04,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:04,126 INFO L225 Difference]: With dead ends: 204 [2022-11-19 06:34:04,126 INFO L226 Difference]: Without dead ends: 204 [2022-11-19 06:34:04,126 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 06:34:04,127 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 8 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:04,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 541 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:34:04,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-19 06:34:04,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-11-19 06:34:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 106 states have (on average 1.990566037735849) internal successors, (211), 189 states have internal predecessors, (211), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:34:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2022-11-19 06:34:04,143 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 6 [2022-11-19 06:34:04,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:04,143 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2022-11-19 06:34:04,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:04,143 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2022-11-19 06:34:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-19 06:34:04,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:04,145 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:04,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:04,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:04,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:04,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:04,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1974734944, now seen corresponding path program 1 times [2022-11-19 06:34:04,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:04,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911274291] [2022-11-19 06:34:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:04,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:04,411 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:34:04,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741825601] [2022-11-19 06:34:04,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:04,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:04,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:04,414 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:04,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:34:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:04,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 06:34:04,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:04,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-19 06:34:04,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-19 06:34:07,273 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 48 treesize of output 42 [2022-11-19 06:34:11,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:11,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911274291] [2022-11-19 06:34:11,876 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:34:11,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741825601] [2022-11-19 06:34:11,876 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. [2022-11-19 06:34:11,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1505220134] [2022-11-19 06:34:11,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2022-11-19 06:34:11,904 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-19 06:34:11,904 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:34:11,911 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:34:11,921 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:34:11,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:34:11,965 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:273) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:221) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 44 more [2022-11-19 06:34:11,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:11,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2022-11-19 06:34:11,972 ERROR L170 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2022-11-19 06:34:11,972 INFO L359 BasicCegarLoop]: Counterexample might be feasible [2022-11-19 06:34:11,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (84 of 85 remaining) [2022-11-19 06:34:11,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 85 remaining) [2022-11-19 06:34:11,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 85 remaining) [2022-11-19 06:34:11,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 85 remaining) [2022-11-19 06:34:11,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 85 remaining) [2022-11-19 06:34:11,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 85 remaining) [2022-11-19 06:34:11,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 85 remaining) [2022-11-19 06:34:11,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 85 remaining) [2022-11-19 06:34:11,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 85 remaining) [2022-11-19 06:34:11,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 85 remaining) [2022-11-19 06:34:11,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 85 remaining) [2022-11-19 06:34:11,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 85 remaining) [2022-11-19 06:34:11,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 85 remaining) [2022-11-19 06:34:11,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 85 remaining) [2022-11-19 06:34:11,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 85 remaining) [2022-11-19 06:34:11,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 85 remaining) [2022-11-19 06:34:11,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 85 remaining) [2022-11-19 06:34:11,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 85 remaining) [2022-11-19 06:34:11,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 85 remaining) [2022-11-19 06:34:11,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 85 remaining) [2022-11-19 06:34:11,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 85 remaining) [2022-11-19 06:34:11,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 85 remaining) [2022-11-19 06:34:11,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 85 remaining) [2022-11-19 06:34:11,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 85 remaining) [2022-11-19 06:34:11,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 85 remaining) [2022-11-19 06:34:11,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 85 remaining) [2022-11-19 06:34:11,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 85 remaining) [2022-11-19 06:34:11,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 85 remaining) [2022-11-19 06:34:11,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 85 remaining) [2022-11-19 06:34:11,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 85 remaining) [2022-11-19 06:34:11,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 85 remaining) [2022-11-19 06:34:11,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 85 remaining) [2022-11-19 06:34:11,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 85 remaining) [2022-11-19 06:34:11,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 85 remaining) [2022-11-19 06:34:11,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 85 remaining) [2022-11-19 06:34:11,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 85 remaining) [2022-11-19 06:34:11,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 85 remaining) [2022-11-19 06:34:11,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 85 remaining) [2022-11-19 06:34:11,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 85 remaining) [2022-11-19 06:34:11,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 85 remaining) [2022-11-19 06:34:11,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 85 remaining) [2022-11-19 06:34:11,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 85 remaining) [2022-11-19 06:34:11,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 85 remaining) [2022-11-19 06:34:11,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 85 remaining) [2022-11-19 06:34:11,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 85 remaining) [2022-11-19 06:34:11,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK (39 of 85 remaining) [2022-11-19 06:34:11,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 85 remaining) [2022-11-19 06:34:11,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 85 remaining) [2022-11-19 06:34:11,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 85 remaining) [2022-11-19 06:34:11,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 85 remaining) [2022-11-19 06:34:11,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 85 remaining) [2022-11-19 06:34:11,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 85 remaining) [2022-11-19 06:34:11,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 85 remaining) [2022-11-19 06:34:11,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 85 remaining) [2022-11-19 06:34:11,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 85 remaining) [2022-11-19 06:34:11,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 85 remaining) [2022-11-19 06:34:11,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr10ASSERT_VIOLATIONMEMORY_FREE (28 of 85 remaining) [2022-11-19 06:34:12,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr11ASSERT_VIOLATIONMEMORY_FREE (27 of 85 remaining) [2022-11-19 06:34:12,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr12ASSERT_VIOLATIONMEMORY_FREE (26 of 85 remaining) [2022-11-19 06:34:12,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 85 remaining) [2022-11-19 06:34:12,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 85 remaining) [2022-11-19 06:34:12,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr15ASSERT_VIOLATIONMEMORY_FREE (23 of 85 remaining) [2022-11-19 06:34:12,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr16ASSERT_VIOLATIONMEMORY_FREE (22 of 85 remaining) [2022-11-19 06:34:12,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr17ASSERT_VIOLATIONMEMORY_FREE (21 of 85 remaining) [2022-11-19 06:34:12,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 85 remaining) [2022-11-19 06:34:12,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 85 remaining) [2022-11-19 06:34:12,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr20ASSERT_VIOLATIONMEMORY_FREE (18 of 85 remaining) [2022-11-19 06:34:12,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr21ASSERT_VIOLATIONMEMORY_FREE (17 of 85 remaining) [2022-11-19 06:34:12,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr22ASSERT_VIOLATIONMEMORY_FREE (16 of 85 remaining) [2022-11-19 06:34:12,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 85 remaining) [2022-11-19 06:34:12,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 85 remaining) [2022-11-19 06:34:12,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr25ASSERT_VIOLATIONMEMORY_FREE (13 of 85 remaining) [2022-11-19 06:34:12,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr26ASSERT_VIOLATIONMEMORY_FREE (12 of 85 remaining) [2022-11-19 06:34:12,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr27ASSERT_VIOLATIONMEMORY_FREE (11 of 85 remaining) [2022-11-19 06:34:12,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 85 remaining) [2022-11-19 06:34:12,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 85 remaining) [2022-11-19 06:34:12,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr30ASSERT_VIOLATIONMEMORY_FREE (8 of 85 remaining) [2022-11-19 06:34:12,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr31ASSERT_VIOLATIONMEMORY_FREE (7 of 85 remaining) [2022-11-19 06:34:12,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr32ASSERT_VIOLATIONMEMORY_FREE (6 of 85 remaining) [2022-11-19 06:34:12,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 85 remaining) [2022-11-19 06:34:12,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 85 remaining) [2022-11-19 06:34:12,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr35ASSERT_VIOLATIONMEMORY_FREE (3 of 85 remaining) [2022-11-19 06:34:12,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr36ASSERT_VIOLATIONMEMORY_FREE (2 of 85 remaining) [2022-11-19 06:34:12,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr37ASSERT_VIOLATIONMEMORY_FREE (1 of 85 remaining) [2022-11-19 06:34:12,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (0 of 85 remaining) [2022-11-19 06:34:12,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:12,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:12,222 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 06:34:12,226 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:34:12,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:34:12 BoogieIcfgContainer [2022-11-19 06:34:12,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:34:12,249 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:34:12,249 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:34:12,249 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:34:12,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:34:02" (3/4) ... [2022-11-19 06:34:12,253 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:34:12,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:34:12,254 INFO L158 Benchmark]: Toolchain (without parser) took 12127.26ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 78.8MB in the beginning and 60.3MB in the end (delta: 18.4MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. [2022-11-19 06:34:12,254 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 79.7MB. Free memory was 50.0MB in the beginning and 50.0MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:34:12,254 INFO L158 Benchmark]: CACSL2BoogieTranslator took 720.88ms. Allocated memory is still 115.3MB. Free memory was 78.6MB in the beginning and 79.7MB in the end (delta: -1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:34:12,255 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.55ms. Allocated memory is still 115.3MB. Free memory was 79.7MB in the beginning and 77.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:34:12,255 INFO L158 Benchmark]: Boogie Preprocessor took 64.86ms. Allocated memory is still 115.3MB. Free memory was 77.1MB in the beginning and 74.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:34:12,255 INFO L158 Benchmark]: RCFGBuilder took 1290.14ms. Allocated memory is still 115.3MB. Free memory was 74.5MB in the beginning and 80.8MB in the end (delta: -6.3MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2022-11-19 06:34:12,256 INFO L158 Benchmark]: TraceAbstraction took 9970.72ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 80.2MB in the beginning and 61.3MB in the end (delta: 18.9MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2022-11-19 06:34:12,256 INFO L158 Benchmark]: Witness Printer took 4.55ms. Allocated memory is still 157.3MB. Free memory was 61.3MB in the beginning and 60.3MB in the end (delta: 941.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:34:12,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 79.7MB. Free memory was 50.0MB in the beginning and 50.0MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 720.88ms. Allocated memory is still 115.3MB. Free memory was 78.6MB in the beginning and 79.7MB in the end (delta: -1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.55ms. Allocated memory is still 115.3MB. Free memory was 79.7MB in the beginning and 77.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.86ms. Allocated memory is still 115.3MB. Free memory was 77.1MB in the beginning and 74.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1290.14ms. Allocated memory is still 115.3MB. Free memory was 74.5MB in the beginning and 80.8MB in the end (delta: -6.3MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. * TraceAbstraction took 9970.72ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 80.2MB in the beginning and 61.3MB in the end (delta: 18.9MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. * Witness Printer took 4.55ms. Allocated memory is still 157.3MB. Free memory was 61.3MB in the beginning and 60.3MB in the end (delta: 941.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L777] static struct L0 *list; [L779] CALL l0_insert(&list) [L708] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND FALSE !(\read(*ptr)) [L708] RET, EXPR zalloc_or_die(sizeof *item) [L708] struct L0 *item = zalloc_or_die(sizeof *item); [L710] CALL l1_insert(&item->down) [L699] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND FALSE !(\read(*ptr)) [L699] RET, EXPR zalloc_or_die(sizeof *item) [L699] struct L1 *item = zalloc_or_die(sizeof *item); [L701] CALL l2_insert(&item->down) [L690] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND FALSE !(\read(*ptr)) [L690] RET, EXPR zalloc_or_die(sizeof *item) [L690] struct L2 *item = zalloc_or_die(sizeof *item); [L692] CALL l3_insert(&item->down) [L681] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND FALSE !(\read(*ptr)) [L681] RET, EXPR zalloc_or_die(sizeof *item) [L681] struct L3 *item = zalloc_or_die(sizeof *item); [L683] CALL l4_insert(&item->down) [L674] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND FALSE !(\read(*ptr)) [L674] RET, EXPR zalloc_or_die(sizeof *item) [L674] struct L4 *item = zalloc_or_die(sizeof *item); [L675] CALL zalloc_or_die(119U) [L667] CALL calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] CALL memset(ptr, 0, nmemb * size) - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 201 locations, 85 error locations. Started 1 CEGAR loops. OverallTime: 9.9s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 1086 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 483 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273 IncrementalHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 603 mSDtfsCounter, 273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 9 NumberOfNonLiveVariables, 671 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- 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 06:34:14,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:34:14,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:34:14,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:34:14,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:34:14,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:34:14,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:34:14,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:34:14,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:34:14,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:34:14,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:34:14,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:34:14,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:34:14,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:34:14,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:34:14,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:34:14,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:34:14,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:34:14,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:34:14,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:34:14,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:34:14,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:34:14,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:34:14,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:34:14,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:34:14,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:34:14,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:34:14,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:34:14,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:34:14,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:34:14,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:34:14,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:34:14,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:34:14,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:34:14,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:34:14,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:34:14,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:34:14,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:34:14,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:34:14,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:34:14,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:34:14,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-19 06:34:14,754 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:34:14,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:34:14,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:34:14,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:34:14,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:34:14,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:34:14,757 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:34:14,758 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:34:14,758 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:34:14,758 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:34:14,758 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:34:14,759 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:34:14,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:34:14,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:34:14,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:34:14,761 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:34:14,761 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:34:14,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:34:14,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:34:14,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:34:14,762 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:34:14,762 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:34:14,762 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:34:14,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:34:14,763 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:34:14,763 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:34:14,763 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:34:14,764 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:34:14,764 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:34:14,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:34:14,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:34:14,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:34:14,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:34:14,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:34:14,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:34:14,766 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:34:14,766 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:14,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:34:14,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:34:14,767 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_d0fa45fb-37f6-45fd-8d70-290d251a6226/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2022-11-19 06:34:15,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:34:15,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:34:15,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:34:15,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:34:15,230 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:34:15,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-19 06:34:15,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/data/e47826978/5d9fe12b80714fe0825ab2bf34f60786/FLAG83d1c9f5b [2022-11-19 06:34:16,197 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:34:16,200 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-19 06:34:16,216 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/data/e47826978/5d9fe12b80714fe0825ab2bf34f60786/FLAG83d1c9f5b [2022-11-19 06:34:16,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/data/e47826978/5d9fe12b80714fe0825ab2bf34f60786 [2022-11-19 06:34:16,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:34:16,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:34:16,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:34:16,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:34:16,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:34:16,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:34:16" (1/1) ... [2022-11-19 06:34:16,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f71e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:16, skipping insertion in model container [2022-11-19 06:34:16,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:34:16" (1/1) ... [2022-11-19 06:34:16,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:34:16,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:34:16,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:34:16,915 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:34:17,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:34:17,081 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:34:17,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17 WrapperNode [2022-11-19 06:34:17,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:34:17,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:34:17,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:34:17,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:34:17,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17" (1/1) ... [2022-11-19 06:34:17,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17" (1/1) ... [2022-11-19 06:34:17,187 INFO L138 Inliner]: procedures = 189, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 230 [2022-11-19 06:34:17,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:34:17,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:34:17,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:34:17,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:34:17,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17" (1/1) ... [2022-11-19 06:34:17,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17" (1/1) ... [2022-11-19 06:34:17,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17" (1/1) ... [2022-11-19 06:34:17,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17" (1/1) ... [2022-11-19 06:34:17,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17" (1/1) ... [2022-11-19 06:34:17,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17" (1/1) ... [2022-11-19 06:34:17,281 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17" (1/1) ... [2022-11-19 06:34:17,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17" (1/1) ... [2022-11-19 06:34:17,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:34:17,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:34:17,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:34:17,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:34:17,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17" (1/1) ... [2022-11-19 06:34:17,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:34:17,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:17,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:34:17,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:34:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:34:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:34:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:34:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:34:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-19 06:34:17,388 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-19 06:34:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:34:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:34:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:34:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-11-19 06:34:17,389 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-11-19 06:34:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:34:17,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:34:17,554 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:34:17,557 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:34:18,626 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:34:18,635 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:34:18,636 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-19 06:34:18,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:34:18 BoogieIcfgContainer [2022-11-19 06:34:18,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:34:18,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:34:18,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:34:18,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:34:18,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:34:16" (1/3) ... [2022-11-19 06:34:18,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee77268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:34:18, skipping insertion in model container [2022-11-19 06:34:18,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:17" (2/3) ... [2022-11-19 06:34:18,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee77268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:34:18, skipping insertion in model container [2022-11-19 06:34:18,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:34:18" (3/3) ... [2022-11-19 06:34:18,648 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2022-11-19 06:34:18,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:34:18,671 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2022-11-19 06:34:18,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:34:18,751 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@731c8279, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:34:18,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2022-11-19 06:34:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 129 states have (on average 1.9069767441860466) internal successors, (246), 214 states have internal predecessors, (246), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:34:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:34:18,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:18,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:34:18,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:18,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:18,771 INFO L85 PathProgramCache]: Analyzing trace with hash 929958, now seen corresponding path program 1 times [2022-11-19 06:34:18,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:18,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36263053] [2022-11-19 06:34:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:18,788 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 06:34:18,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:18,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:18,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:18,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 06:34:18,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:18,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:18,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:18,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36263053] [2022-11-19 06:34:18,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36263053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:18,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:18,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:34:18,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485248912] [2022-11-19 06:34:18,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:18,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:34:18,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:19,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:34:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:34:19,042 INFO L87 Difference]: Start difference. First operand has 228 states, 129 states have (on average 1.9069767441860466) internal successors, (246), 214 states have internal predecessors, (246), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:19,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:19,109 INFO L93 Difference]: Finished difference Result 228 states and 257 transitions. [2022-11-19 06:34:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:34:19,115 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 06:34:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:19,130 INFO L225 Difference]: With dead ends: 228 [2022-11-19 06:34:19,130 INFO L226 Difference]: Without dead ends: 226 [2022-11-19 06:34:19,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 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 06:34:19,136 INFO L413 NwaCegarLoop]: 257 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, 257 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 06:34:19,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:34:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-19 06:34:19,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-11-19 06:34:19,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 128 states have (on average 1.8203125) internal successors, (233), 212 states have internal predecessors, (233), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:34:19,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2022-11-19 06:34:19,202 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 4 [2022-11-19 06:34:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:19,202 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2022-11-19 06:34:19,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2022-11-19 06:34:19,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:34:19,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:19,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:34:19,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:19,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:19,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:19,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:19,415 INFO L85 PathProgramCache]: Analyzing trace with hash 889928016, now seen corresponding path program 1 times [2022-11-19 06:34:19,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:19,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552542955] [2022-11-19 06:34:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:19,417 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 06:34:19,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:19,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:19,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:19,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:34:19,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:19,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2022-11-19 06:34:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:19,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:19,680 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:19,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552542955] [2022-11-19 06:34:19,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552542955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:19,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:19,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:34:19,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229564548] [2022-11-19 06:34:19,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:19,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:19,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:19,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:19,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:19,685 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:20,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:20,100 INFO L93 Difference]: Finished difference Result 225 states and 254 transitions. [2022-11-19 06:34:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:20,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 06:34:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:20,105 INFO L225 Difference]: With dead ends: 225 [2022-11-19 06:34:20,105 INFO L226 Difference]: Without dead ends: 225 [2022-11-19 06:34:20,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 06:34:20,107 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 9 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:20,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 408 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:34:20,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-19 06:34:20,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-11-19 06:34:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 128 states have (on average 1.8125) internal successors, (232), 211 states have internal predecessors, (232), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:34:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 254 transitions. [2022-11-19 06:34:20,151 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 254 transitions. Word has length 6 [2022-11-19 06:34:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:20,152 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 254 transitions. [2022-11-19 06:34:20,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:20,152 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 254 transitions. [2022-11-19 06:34:20,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:34:20,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:20,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:20,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:20,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:20,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:20,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:20,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1817965136, now seen corresponding path program 1 times [2022-11-19 06:34:20,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:20,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915393602] [2022-11-19 06:34:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:20,371 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 06:34:20,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:20,376 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:20,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:20,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 06:34:20,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:20,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-19 06:34:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:20,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:20,598 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:20,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915393602] [2022-11-19 06:34:20,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915393602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:20,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:20,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:34:20,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614746116] [2022-11-19 06:34:20,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:20,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:34:20,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:20,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:34:20,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:34:20,607 INFO L87 Difference]: Start difference. First operand 225 states and 254 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:21,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:21,176 INFO L93 Difference]: Finished difference Result 234 states and 263 transitions. [2022-11-19 06:34:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:34:21,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 06:34:21,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:21,179 INFO L225 Difference]: With dead ends: 234 [2022-11-19 06:34:21,180 INFO L226 Difference]: Without dead ends: 234 [2022-11-19 06:34:21,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 06:34:21,182 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 16 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:21,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 662 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:34:21,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-19 06:34:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-11-19 06:34:21,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 136 states have (on average 1.7720588235294117) internal successors, (241), 219 states have internal predecessors, (241), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:34:21,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 263 transitions. [2022-11-19 06:34:21,214 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 263 transitions. Word has length 7 [2022-11-19 06:34:21,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:21,216 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 263 transitions. [2022-11-19 06:34:21,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:21,217 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 263 transitions. [2022-11-19 06:34:21,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 06:34:21,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:21,219 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:21,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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)] Ended with exit code 0 [2022-11-19 06:34:21,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:21,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:21,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1126435929, now seen corresponding path program 1 times [2022-11-19 06:34:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:21,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392529867] [2022-11-19 06:34:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:21,435 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 06:34:21,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:21,437 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:21,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 (5)] Waiting until timeout for monitored process [2022-11-19 06:34:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:21,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:34:21,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-19 06:34:21,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:21,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:21,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392529867] [2022-11-19 06:34:21,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392529867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:21,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:21,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:34:21,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020489147] [2022-11-19 06:34:21,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:21,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:34:21,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:34:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:34:21,880 INFO L87 Difference]: Start difference. First operand 234 states and 263 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 06:34:22,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:22,022 INFO L93 Difference]: Finished difference Result 246 states and 275 transitions. [2022-11-19 06:34:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:34:22,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2022-11-19 06:34:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:22,026 INFO L225 Difference]: With dead ends: 246 [2022-11-19 06:34:22,026 INFO L226 Difference]: Without dead ends: 236 [2022-11-19 06:34:22,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:34:22,030 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 14 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:22,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 950 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:34:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-19 06:34:22,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-19 06:34:22,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 138 states have (on average 1.7608695652173914) internal successors, (243), 221 states have internal predecessors, (243), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:34:22,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 265 transitions. [2022-11-19 06:34:22,068 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 265 transitions. Word has length 66 [2022-11-19 06:34:22,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:22,068 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 265 transitions. [2022-11-19 06:34:22,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 06:34:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 265 transitions. [2022-11-19 06:34:22,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 06:34:22,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:22,073 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:22,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:22,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:22,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:22,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:22,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1056190273, now seen corresponding path program 1 times [2022-11-19 06:34:22,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:22,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331740041] [2022-11-19 06:34:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:22,297 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 06:34:22,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:22,301 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:22,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:22,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 06:34:22,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-19 06:34:22,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-19 06:34:23,128 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:23,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331740041] [2022-11-19 06:34:23,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331740041] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:23,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2013552552] [2022-11-19 06:34:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:23,130 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:23,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:34:23,135 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:34:23,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 06:34:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:23,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 06:34:23,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-19 06:34:23,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-19 06:34:23,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2013552552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:23,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399256490] [2022-11-19 06:34:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:23,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:23,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:23,975 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:23,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:34:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:24,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:34:24,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-19 06:34:27,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-19 06:34:28,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399256490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:28,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:34:28,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 16 [2022-11-19 06:34:28,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857705912] [2022-11-19 06:34:28,604 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:28,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 06:34:28,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:28,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 06:34:28,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=163, Unknown=1, NotChecked=0, Total=240 [2022-11-19 06:34:28,607 INFO L87 Difference]: Start difference. First operand 236 states and 265 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:34:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:29,465 INFO L93 Difference]: Finished difference Result 260 states and 299 transitions. [2022-11-19 06:34:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 06:34:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2022-11-19 06:34:29,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:29,472 INFO L225 Difference]: With dead ends: 260 [2022-11-19 06:34:29,472 INFO L226 Difference]: Without dead ends: 260 [2022-11-19 06:34:29,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=137, Invalid=282, Unknown=1, NotChecked=0, Total=420 [2022-11-19 06:34:29,474 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 89 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:29,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1435 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 20 Unchecked, 0.2s Time] [2022-11-19 06:34:29,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-19 06:34:29,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 243. [2022-11-19 06:34:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 144 states have (on average 1.7430555555555556) internal successors, (251), 228 states have internal predecessors, (251), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-19 06:34:29,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 277 transitions. [2022-11-19 06:34:29,500 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 277 transitions. Word has length 71 [2022-11-19 06:34:29,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:29,501 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 277 transitions. [2022-11-19 06:34:29,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:34:29,501 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 277 transitions. [2022-11-19 06:34:29,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 06:34:29,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:29,513 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:29,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:29,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:29,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:30,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:30,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:30,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:30,127 INFO L85 PathProgramCache]: Analyzing trace with hash 580170047, now seen corresponding path program 2 times [2022-11-19 06:34:30,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:30,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695661364] [2022-11-19 06:34:30,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:34:30,128 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 06:34:30,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:30,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:30,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 (9)] Waiting until timeout for monitored process [2022-11-19 06:34:30,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-19 06:34:30,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:30,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 06:34:30,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:30,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-19 06:34:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-19 06:34:30,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:30,632 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:30,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695661364] [2022-11-19 06:34:30,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695661364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:30,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:30,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:34:30,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126878871] [2022-11-19 06:34:30,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:30,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:30,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:30,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:30,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:30,634 INFO L87 Difference]: Start difference. First operand 243 states and 277 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 06:34:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:30,644 INFO L93 Difference]: Finished difference Result 242 states and 276 transitions. [2022-11-19 06:34:30,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:30,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 73 [2022-11-19 06:34:30,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:30,650 INFO L225 Difference]: With dead ends: 242 [2022-11-19 06:34:30,650 INFO L226 Difference]: Without dead ends: 242 [2022-11-19 06:34:30,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:30,654 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:30,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 433 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 70 Unchecked, 0.0s Time] [2022-11-19 06:34:30,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-19 06:34:30,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2022-11-19 06:34:30,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 227 states have internal predecessors, (250), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-19 06:34:30,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 276 transitions. [2022-11-19 06:34:30,667 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 276 transitions. Word has length 73 [2022-11-19 06:34:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:30,670 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 276 transitions. [2022-11-19 06:34:30,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 06:34:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 276 transitions. [2022-11-19 06:34:30,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-19 06:34:30,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:30,676 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 06:34:30,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 (9)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:30,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:30,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:30,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:30,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1461601204, now seen corresponding path program 1 times [2022-11-19 06:34:30,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:30,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633930777] [2022-11-19 06:34:30,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:30,893 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 06:34:30,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:30,898 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:30,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:31,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:34:31,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 80 proven. 6 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-19 06:34:31,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-19 06:34:32,337 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:32,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633930777] [2022-11-19 06:34:32,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633930777] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:32,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [502496995] [2022-11-19 06:34:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:32,337 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:32,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:34:32,339 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:34:32,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-19 06:34:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:32,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:34:32,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 80 proven. 6 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-19 06:34:33,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-19 06:34:33,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [502496995] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:33,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437330314] [2022-11-19 06:34:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:33,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:33,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:33,475 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:33,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 06:34:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:33,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:34:33,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 127 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-19 06:34:37,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-19 06:34:38,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437330314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:38,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:34:38,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2022-11-19 06:34:38,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443926240] [2022-11-19 06:34:38,099 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:38,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 06:34:38,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:38,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 06:34:38,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=265, Unknown=1, NotChecked=0, Total=380 [2022-11-19 06:34:38,102 INFO L87 Difference]: Start difference. First operand 242 states and 276 transitions. Second operand has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:34:40,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:40,296 INFO L93 Difference]: Finished difference Result 287 states and 325 transitions. [2022-11-19 06:34:40,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 06:34:40,297 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-11-19 06:34:40,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:40,299 INFO L225 Difference]: With dead ends: 287 [2022-11-19 06:34:40,299 INFO L226 Difference]: Without dead ends: 262 [2022-11-19 06:34:40,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=282, Invalid=587, Unknown=1, NotChecked=0, Total=870 [2022-11-19 06:34:40,300 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 125 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:40,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1952 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 130 Invalid, 0 Unknown, 50 Unchecked, 0.7s Time] [2022-11-19 06:34:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-19 06:34:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 249. [2022-11-19 06:34:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 151 states have (on average 1.7019867549668874) internal successors, (257), 234 states have internal predecessors, (257), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-19 06:34:40,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 282 transitions. [2022-11-19 06:34:40,310 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 282 transitions. Word has length 81 [2022-11-19 06:34:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:40,310 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 282 transitions. [2022-11-19 06:34:40,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:34:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 282 transitions. [2022-11-19 06:34:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-19 06:34:40,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:40,312 INFO L195 NwaCegarLoop]: trace histogram [18, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 06:34:40,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:40,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:40,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:40,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:40,918 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:40,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1848488972, now seen corresponding path program 2 times [2022-11-19 06:34:40,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:40,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489554461] [2022-11-19 06:34:40,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:34:40,920 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 06:34:40,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:40,922 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:40,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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)] Waiting until timeout for monitored process [2022-11-19 06:34:41,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:34:41,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:41,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 06:34:41,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 168 proven. 28 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-11-19 06:34:41,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 191 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-19 06:34:43,330 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:43,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489554461] [2022-11-19 06:34:43,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489554461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:43,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1595457959] [2022-11-19 06:34:43,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:34:43,331 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:43,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:34:43,335 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:34:43,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-19 06:34:44,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:34:44,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:44,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 06:34:44,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 168 proven. 28 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-11-19 06:34:44,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 191 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-19 06:34:44,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1595457959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:44,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171750198] [2022-11-19 06:34:44,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:34:44,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:44,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:44,836 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:44,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 06:34:45,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:34:45,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:45,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:34:45,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 226 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-19 06:34:48,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 46 proven. 34 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-11-19 06:34:49,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171750198] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:49,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:34:49,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 6, 6] total 28 [2022-11-19 06:34:49,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503414880] [2022-11-19 06:34:49,841 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:49,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-19 06:34:49,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:49,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-19 06:34:49,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=571, Unknown=1, NotChecked=0, Total=756 [2022-11-19 06:34:49,844 INFO L87 Difference]: Start difference. First operand 249 states and 282 transitions. Second operand has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 06:34:55,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:55,132 INFO L93 Difference]: Finished difference Result 298 states and 337 transitions. [2022-11-19 06:34:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-19 06:34:55,133 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 91 [2022-11-19 06:34:55,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:55,135 INFO L225 Difference]: With dead ends: 298 [2022-11-19 06:34:55,136 INFO L226 Difference]: Without dead ends: 278 [2022-11-19 06:34:55,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=373, Invalid=1031, Unknown=2, NotChecked=0, Total=1406 [2022-11-19 06:34:55,137 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 192 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:55,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 2824 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 251 Invalid, 0 Unknown, 23 Unchecked, 1.2s Time] [2022-11-19 06:34:55,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-19 06:34:55,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 261. [2022-11-19 06:34:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 162 states have (on average 1.6728395061728396) internal successors, (271), 246 states have internal predecessors, (271), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2022-11-19 06:34:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 298 transitions. [2022-11-19 06:34:55,149 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 298 transitions. Word has length 91 [2022-11-19 06:34:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:55,150 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 298 transitions. [2022-11-19 06:34:55,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 06:34:55,150 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 298 transitions. [2022-11-19 06:34:55,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 06:34:55,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:55,152 INFO L195 NwaCegarLoop]: trace histogram [27, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 06:34:55,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:55,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:55,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:55,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:55,768 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:55,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:55,769 INFO L85 PathProgramCache]: Analyzing trace with hash -742971774, now seen corresponding path program 3 times [2022-11-19 06:34:55,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:55,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685082357] [2022-11-19 06:34:55,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:34:55,769 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 06:34:55,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:55,771 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:55,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:56,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:34:56,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:56,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 06:34:56,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-19 06:34:56,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-19 06:34:56,675 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:56,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685082357] [2022-11-19 06:34:56,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685082357] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:56,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1704010748] [2022-11-19 06:34:56,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:34:56,676 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:56,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:34:56,679 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:34:56,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-19 06:34:57,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:34:57,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:57,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 06:34:57,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-19 06:34:57,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-19 06:34:57,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1704010748] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:57,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955803456] [2022-11-19 06:34:57,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:34:57,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:57,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:57,575 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:57,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-19 06:34:57,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:34:57,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:57,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 06:34:57,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-19 06:34:57,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-19 06:34:58,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955803456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:58,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:34:58,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2022-11-19 06:34:58,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663014241] [2022-11-19 06:34:58,211 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:58,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 06:34:58,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:58,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 06:34:58,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:34:58,213 INFO L87 Difference]: Start difference. First operand 261 states and 298 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 06:34:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:58,805 INFO L93 Difference]: Finished difference Result 266 states and 300 transitions. [2022-11-19 06:34:58,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 06:34:58,806 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 100 [2022-11-19 06:34:58,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:58,809 INFO L225 Difference]: With dead ends: 266 [2022-11-19 06:34:58,809 INFO L226 Difference]: Without dead ends: 256 [2022-11-19 06:34:58,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-11-19 06:34:58,833 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 86 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:58,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 964 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:34:58,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-19 06:34:58,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2022-11-19 06:34:58,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 158 states have (on average 1.6772151898734178) internal successors, (265), 241 states have internal predecessors, (265), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-19 06:34:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 290 transitions. [2022-11-19 06:34:58,844 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 290 transitions. Word has length 100 [2022-11-19 06:34:58,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:58,845 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 290 transitions. [2022-11-19 06:34:58,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 06:34:58,845 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 290 transitions. [2022-11-19 06:34:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-19 06:34:58,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:58,847 INFO L195 NwaCegarLoop]: trace histogram [44, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 06:34:58,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:59,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:59,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:59,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:59,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:34:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:59,464 INFO L85 PathProgramCache]: Analyzing trace with hash -769440470, now seen corresponding path program 4 times [2022-11-19 06:34:59,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:59,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397160967] [2022-11-19 06:34:59,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:34:59,464 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 06:34:59,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:59,465 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:34:59,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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)] Waiting until timeout for monitored process [2022-11-19 06:35:00,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:35:00,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:35:00,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 06:35:00,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 260 proven. 10 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:00,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:35:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 260 proven. 10 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:01,816 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:35:01,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397160967] [2022-11-19 06:35:01,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397160967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:35:01,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [497828311] [2022-11-19 06:35:01,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:35:01,817 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:35:01,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:35:01,819 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:35:01,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-19 06:35:03,126 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:35:03,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:35:03,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 06:35:03,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 260 proven. 10 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:03,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:35:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 260 proven. 10 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:03,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [497828311] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:35:03,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080578252] [2022-11-19 06:35:03,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:35:03,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:35:03,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:35:03,763 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:35:03,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-19 06:35:04,311 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:35:04,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:35:04,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:35:04,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:04,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2022-11-19 06:35:04,981 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_2091 (_ BitVec 1))) (= (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_2091) |c_#valid|)))) is different from true [2022-11-19 06:35:05,208 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-19 06:35:05,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-19 06:35:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 52 not checked. [2022-11-19 06:35:05,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:35:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 565 proven. 52 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2022-11-19 06:35:06,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080578252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:35:06,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:35:06,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 8] total 25 [2022-11-19 06:35:06,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826712666] [2022-11-19 06:35:06,129 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:35:06,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 06:35:06,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:35:06,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 06:35:06,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=458, Unknown=1, NotChecked=44, Total=600 [2022-11-19 06:35:06,131 INFO L87 Difference]: Start difference. First operand 256 states and 290 transitions. Second operand has 25 states, 25 states have (on average 3.0) internal successors, (75), 23 states have internal predecessors, (75), 2 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 06:35:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:14,418 INFO L93 Difference]: Finished difference Result 274 states and 313 transitions. [2022-11-19 06:35:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-19 06:35:14,419 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 23 states have internal predecessors, (75), 2 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2022-11-19 06:35:14,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:14,421 INFO L225 Difference]: With dead ends: 274 [2022-11-19 06:35:14,421 INFO L226 Difference]: Without dead ends: 264 [2022-11-19 06:35:14,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 673 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=479, Invalid=2494, Unknown=1, NotChecked=106, Total=3080 [2022-11-19 06:35:14,422 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 146 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 2900 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 381 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:14,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 2900 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1153 Invalid, 0 Unknown, 381 Unchecked, 4.2s Time] [2022-11-19 06:35:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-19 06:35:14,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2022-11-19 06:35:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 159 states have (on average 1.6540880503144655) internal successors, (263), 240 states have internal predecessors, (263), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-19 06:35:14,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 288 transitions. [2022-11-19 06:35:14,434 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 288 transitions. Word has length 117 [2022-11-19 06:35:14,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:14,436 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 288 transitions. [2022-11-19 06:35:14,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 23 states have internal predecessors, (75), 2 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 06:35:14,436 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 288 transitions. [2022-11-19 06:35:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-19 06:35:14,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:14,440 INFO L195 NwaCegarLoop]: trace histogram [49, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 06:35:14,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2022-11-19 06:35:14,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:35:14,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-19 06:35:15,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:35:15,049 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:35:15,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:15,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1816694197, now seen corresponding path program 1 times [2022-11-19 06:35:15,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:35:15,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749288521] [2022-11-19 06:35:15,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:15,051 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 06:35:15,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:35:15,052 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:35:15,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:35:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:16,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 06:35:16,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 485 proven. 45 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:17,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:35:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 485 proven. 45 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:18,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:35:18,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749288521] [2022-11-19 06:35:18,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749288521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:35:18,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1167114436] [2022-11-19 06:35:18,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:18,777 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:35:18,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:35:18,778 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:35:18,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-19 06:35:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:20,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 06:35:20,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 485 proven. 45 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:20,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:35:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 485 proven. 45 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:21,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1167114436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:35:21,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591399838] [2022-11-19 06:35:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:21,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:35:21,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:35:21,127 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:35:21,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-19 06:35:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:21,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 06:35:21,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 485 proven. 45 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:22,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:35:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 485 proven. 45 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:24,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591399838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:35:24,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:35:24,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2022-11-19 06:35:24,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364695713] [2022-11-19 06:35:24,917 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:35:24,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-19 06:35:24,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:35:24,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-19 06:35:24,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1012, Unknown=0, NotChecked=0, Total=1406 [2022-11-19 06:35:24,920 INFO L87 Difference]: Start difference. First operand 255 states and 288 transitions. Second operand has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 06:35:30,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:30,733 INFO L93 Difference]: Finished difference Result 275 states and 312 transitions. [2022-11-19 06:35:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-19 06:35:30,734 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 122 [2022-11-19 06:35:30,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:30,735 INFO L225 Difference]: With dead ends: 275 [2022-11-19 06:35:30,735 INFO L226 Difference]: Without dead ends: 259 [2022-11-19 06:35:30,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1201, Invalid=2459, Unknown=0, NotChecked=0, Total=3660 [2022-11-19 06:35:30,737 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 443 mSDsluCounter, 4054 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:30,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 4299 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 06:35:30,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-19 06:35:30,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2022-11-19 06:35:30,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 164 states have (on average 1.6158536585365855) internal successors, (265), 244 states have internal predecessors, (265), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:35:30,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 287 transitions. [2022-11-19 06:35:30,745 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 287 transitions. Word has length 122 [2022-11-19 06:35:30,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:30,746 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 287 transitions. [2022-11-19 06:35:30,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 06:35:30,746 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 287 transitions. [2022-11-19 06:35:30,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 06:35:30,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:30,748 INFO L195 NwaCegarLoop]: trace histogram [60, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 06:35:30,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:35:30,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-19 06:35:31,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-19 06:35:31,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:35:31,364 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:35:31,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:31,364 INFO L85 PathProgramCache]: Analyzing trace with hash -137261269, now seen corresponding path program 2 times [2022-11-19 06:35:31,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:35:31,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555009324] [2022-11-19 06:35:31,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:35:31,365 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 06:35:31,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:35:31,366 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:35:31,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 (25)] Waiting until timeout for monitored process [2022-11-19 06:35:32,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:35:32,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:35:32,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-19 06:35:32,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 980 proven. 210 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:34,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:35:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 980 proven. 210 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:38,803 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:35:38,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555009324] [2022-11-19 06:35:38,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555009324] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:35:38,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1923595692] [2022-11-19 06:35:38,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:35:38,804 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:35:38,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:35:38,805 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:35:38,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-19 06:35:40,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:35:40,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:35:40,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-19 06:35:40,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 980 proven. 210 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:41,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:35:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 980 proven. 210 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:42,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1923595692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:35:42,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766716612] [2022-11-19 06:35:42,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:35:42,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:35:42,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:35:42,127 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:35:42,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-19 06:35:42,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:35:42,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:35:42,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-19 06:35:42,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 980 proven. 210 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:43,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:35:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 980 proven. 210 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:35:53,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766716612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:35:53,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:35:53,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 25, 25, 25] total 71 [2022-11-19 06:35:53,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886300768] [2022-11-19 06:35:53,348 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:35:53,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-11-19 06:35:53,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:35:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-11-19 06:35:53,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1263, Invalid=3707, Unknown=0, NotChecked=0, Total=4970 [2022-11-19 06:35:53,352 INFO L87 Difference]: Start difference. First operand 259 states and 287 transitions. Second operand has 71 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 71 states have internal predecessors, (107), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 06:36:13,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:36:13,511 INFO L93 Difference]: Finished difference Result 291 states and 339 transitions. [2022-11-19 06:36:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-19 06:36:13,517 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 71 states have internal predecessors, (107), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 133 [2022-11-19 06:36:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:36:13,519 INFO L225 Difference]: With dead ends: 291 [2022-11-19 06:36:13,519 INFO L226 Difference]: Without dead ends: 281 [2022-11-19 06:36:13,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2290 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=3401, Invalid=7519, Unknown=0, NotChecked=0, Total=10920 [2022-11-19 06:36:13,523 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1048 mSDsluCounter, 8126 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 8371 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:36:13,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 8371 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-19 06:36:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-11-19 06:36:13,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2022-11-19 06:36:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 186 states have (on average 1.543010752688172) internal successors, (287), 266 states have internal predecessors, (287), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:36:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 309 transitions. [2022-11-19 06:36:13,532 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 309 transitions. Word has length 133 [2022-11-19 06:36:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:36:13,532 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 309 transitions. [2022-11-19 06:36:13,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 71 states have internal predecessors, (107), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 06:36:13,533 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 309 transitions. [2022-11-19 06:36:13,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-19 06:36:13,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:36:13,535 INFO L195 NwaCegarLoop]: trace histogram [82, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 06:36:13,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-19 06:36:13,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-19 06:36:13,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 (25)] Forceful destruction successful, exit code 0 [2022-11-19 06:36:14,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:36:14,155 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:36:14,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:36:14,156 INFO L85 PathProgramCache]: Analyzing trace with hash -43053845, now seen corresponding path program 3 times [2022-11-19 06:36:14,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:36:14,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096697690] [2022-11-19 06:36:14,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:36:14,157 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 06:36:14,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:36:14,158 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:36:14,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 (28)] Waiting until timeout for monitored process [2022-11-19 06:36:14,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 06:36:14,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:36:14,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-19 06:36:14,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:36:14,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-19 06:36:15,429 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_4635 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_4635))))) is different from true [2022-11-19 06:36:16,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:36:16,108 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 14 [2022-11-19 06:36:16,135 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 06:36:16,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-19 06:36:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1933 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 394 not checked. [2022-11-19 06:36:16,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:36:20,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:36:20,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096697690] [2022-11-19 06:36:20,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096697690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:36:20,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1830415225] [2022-11-19 06:36:20,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:36:20,868 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:36:20,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:36:20,869 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:36:20,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-19 06:36:21,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 06:36:21,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:36:21,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-19 06:36:21,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:36:21,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-19 06:36:22,322 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_5144 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_5144))))) is different from true [2022-11-19 06:36:23,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:36:23,071 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 14 [2022-11-19 06:36:23,097 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 06:36:23,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-19 06:36:23,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1933 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 394 not checked. [2022-11-19 06:36:23,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:36:23,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1830415225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:36:23,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226545701] [2022-11-19 06:36:23,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:36:23,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:36:23,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:36:23,493 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:36:23,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-19 06:36:24,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 06:36:24,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:36:24,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-19 06:36:24,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:36:24,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-19 06:36:24,685 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_5653 (_ BitVec 32))) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_5653) |c_#length|)))) is different from true [2022-11-19 06:36:25,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:36:25,455 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 14 [2022-11-19 06:36:25,481 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 06:36:25,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-19 06:36:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1933 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 394 not checked. [2022-11-19 06:36:25,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:36:27,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226545701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:36:27,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:36:27,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2022-11-19 06:36:27,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513270028] [2022-11-19 06:36:27,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:36:27,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:36:27,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:36:27,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:36:27,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=132, Unknown=3, NotChecked=72, Total=240 [2022-11-19 06:36:27,954 INFO L87 Difference]: Start difference. First operand 281 states and 309 transitions. Second operand has 14 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 06:36:34,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:36:34,724 INFO L93 Difference]: Finished difference Result 416 states and 474 transitions. [2022-11-19 06:36:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 06:36:34,725 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 155 [2022-11-19 06:36:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:36:34,727 INFO L225 Difference]: With dead ends: 416 [2022-11-19 06:36:34,728 INFO L226 Difference]: Without dead ends: 416 [2022-11-19 06:36:34,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 452 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=50, Invalid=265, Unknown=3, NotChecked=102, Total=420 [2022-11-19 06:36:34,729 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 225 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 817 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:36:34,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 428 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1931 Invalid, 0 Unknown, 817 Unchecked, 5.9s Time] [2022-11-19 06:36:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-11-19 06:36:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 279. [2022-11-19 06:36:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 186 states have (on average 1.532258064516129) internal successors, (285), 264 states have internal predecessors, (285), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:36:34,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 307 transitions. [2022-11-19 06:36:34,740 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 307 transitions. Word has length 155 [2022-11-19 06:36:34,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:36:34,741 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 307 transitions. [2022-11-19 06:36:34,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 06:36:34,741 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 307 transitions. [2022-11-19 06:36:34,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-19 06:36:34,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:36:34,743 INFO L195 NwaCegarLoop]: trace histogram [82, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 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 06:36:34,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-19 06:36:34,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-19 06:36:35,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 (28)] Forceful destruction successful, exit code 0 [2022-11-19 06:36:35,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:36:35,354 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:36:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:36:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1574927179, now seen corresponding path program 1 times [2022-11-19 06:36:35,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:36:35,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421754467] [2022-11-19 06:36:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:36:35,356 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 06:36:35,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:36:35,357 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:36:35,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 (31)] Waiting until timeout for monitored process [2022-11-19 06:36:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:36:37,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-19 06:36:37,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:36:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1970 proven. 903 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:36:42,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:36:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1970 proven. 903 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:36:54,536 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:36:54,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421754467] [2022-11-19 06:36:54,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421754467] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:36:54,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1821403840] [2022-11-19 06:36:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:36:54,537 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:36:54,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:36:54,538 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:36:54,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-19 06:36:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:36:57,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-19 06:36:57,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:36:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1970 proven. 903 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:36:57,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:36:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1970 proven. 903 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:36:59,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1821403840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:36:59,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583243331] [2022-11-19 06:36:59,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:36:59,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:36:59,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:36:59,786 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:36:59,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-19 06:37:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:00,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-19 06:37:00,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:37:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1970 proven. 903 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:37:01,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:37:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1970 proven. 903 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:37:33,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583243331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:37:33,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:37:33,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47, 47, 47, 47] total 137 [2022-11-19 06:37:33,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297368482] [2022-11-19 06:37:33,611 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:37:33,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-11-19 06:37:33,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:37:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-11-19 06:37:33,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4453, Invalid=14179, Unknown=0, NotChecked=0, Total=18632 [2022-11-19 06:37:33,619 INFO L87 Difference]: Start difference. First operand 279 states and 307 transitions. Second operand has 137 states, 137 states have (on average 1.2773722627737227) internal successors, (175), 137 states have internal predecessors, (175), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 06:39:01,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:01,063 INFO L93 Difference]: Finished difference Result 333 states and 403 transitions. [2022-11-19 06:39:01,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-19 06:39:01,069 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 1.2773722627737227) internal successors, (175), 137 states have internal predecessors, (175), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 157 [2022-11-19 06:39:01,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:01,070 INFO L225 Difference]: With dead ends: 333 [2022-11-19 06:39:01,071 INFO L226 Difference]: Without dead ends: 323 [2022-11-19 06:39:01,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 801 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7416 ImplicationChecksByTransitivity, 112.1s TimeCoverageRelationStatistics Valid=11068, Invalid=25988, Unknown=0, NotChecked=0, Total=37056 [2022-11-19 06:39:01,079 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 2562 mSDsluCounter, 15447 mSDsCounter, 0 mSdLazyCounter, 2831 mSolverCounterSat, 1580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2562 SdHoareTripleChecker+Valid, 15690 SdHoareTripleChecker+Invalid, 4411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1580 IncrementalHoareTripleChecker+Valid, 2831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:01,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2562 Valid, 15690 Invalid, 4411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1580 Valid, 2831 Invalid, 0 Unknown, 0 Unchecked, 19.1s Time] [2022-11-19 06:39:01,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-19 06:39:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-11-19 06:39:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 230 states have (on average 1.4304347826086956) internal successors, (329), 308 states have internal predecessors, (329), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 06:39:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 351 transitions. [2022-11-19 06:39:01,087 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 351 transitions. Word has length 157 [2022-11-19 06:39:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:01,088 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 351 transitions. [2022-11-19 06:39:01,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 1.2773722627737227) internal successors, (175), 137 states have internal predecessors, (175), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 06:39:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 351 transitions. [2022-11-19 06:39:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-19 06:39:01,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:01,091 INFO L195 NwaCegarLoop]: trace histogram [126, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 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 06:39:01,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:01,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:01,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 (31)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:01,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:39:01,707 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-19 06:39:01,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:01,708 INFO L85 PathProgramCache]: Analyzing trace with hash -780720437, now seen corresponding path program 2 times [2022-11-19 06:39:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:39:01,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135619420] [2022-11-19 06:39:01,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:39:01,709 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 06:39:01,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:39:01,711 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 06:39:01,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/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 (34)] Waiting until timeout for monitored process [2022-11-19 06:39:03,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:39:03,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:39:03,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-19 06:39:03,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8766 backedges. 3950 proven. 3741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:39:20,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:39:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 8766 backedges. 3950 proven. 3741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:39:48,297 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:39:48,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135619420] [2022-11-19 06:39:48,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135619420] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:39:48,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1286785667] [2022-11-19 06:39:48,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:39:48,297 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:39:48,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:39:48,298 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:39:48,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-19 06:39:51,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:39:51,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:39:52,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-19 06:39:52,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8766 backedges. 3950 proven. 3741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:39:52,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:39:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 8766 backedges. 3950 proven. 3741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:39:58,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1286785667] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:39:58,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430142370] [2022-11-19 06:39:58,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:39:58,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:58,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:39:58,279 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:39:58,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fa45fb-37f6-45fd-8d70-290d251a6226/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-19 06:39:59,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:39:59,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:39:59,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-19 06:39:59,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:40:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8766 backedges. 3950 proven. 3741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:40:00,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8766 backedges. 3950 proven. 3741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-19 06:41:41,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430142370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:41:41,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:41:41,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91, 91, 91, 91] total 269 [2022-11-19 06:41:41,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672266613] [2022-11-19 06:41:41,853 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:41:41,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 269 states [2022-11-19 06:41:41,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:41,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 269 interpolants. [2022-11-19 06:41:41,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15047, Invalid=57045, Unknown=0, NotChecked=0, Total=72092 [2022-11-19 06:41:41,870 INFO L87 Difference]: Start difference. First operand 323 states and 351 transitions. Second operand has 269 states, 269 states have (on average 1.141263940520446) internal successors, (307), 269 states have internal predecessors, (307), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 06:42:49,608 WARN L233 SmtUtils]: Spent 15.39s on a formula simplification. DAG size of input: 407 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:43:14,060 WARN L233 SmtUtils]: Spent 15.84s on a formula simplification. DAG size of input: 403 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:43:38,146 WARN L233 SmtUtils]: Spent 16.27s on a formula simplification. DAG size of input: 399 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:44:01,067 WARN L233 SmtUtils]: Spent 15.15s on a formula simplification. DAG size of input: 395 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:44:23,939 WARN L233 SmtUtils]: Spent 14.21s on a formula simplification. DAG size of input: 391 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:44:45,086 WARN L233 SmtUtils]: Spent 13.98s on a formula simplification. DAG size of input: 387 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:45:05,899 WARN L233 SmtUtils]: Spent 13.61s on a formula simplification. DAG size of input: 383 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:45:26,275 WARN L233 SmtUtils]: Spent 13.16s on a formula simplification. DAG size of input: 379 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:45:47,492 WARN L233 SmtUtils]: Spent 13.96s on a formula simplification. DAG size of input: 375 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:46:08,108 WARN L233 SmtUtils]: Spent 13.29s on a formula simplification. DAG size of input: 371 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:46:28,957 WARN L233 SmtUtils]: Spent 13.46s on a formula simplification. DAG size of input: 367 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:46:49,653 WARN L233 SmtUtils]: Spent 13.64s on a formula simplification. DAG size of input: 363 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:47:11,736 WARN L233 SmtUtils]: Spent 14.34s on a formula simplification. DAG size of input: 359 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:47:34,779 WARN L233 SmtUtils]: Spent 15.09s on a formula simplification. DAG size of input: 355 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:47:57,434 WARN L233 SmtUtils]: Spent 14.57s on a formula simplification. DAG size of input: 351 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:48:20,632 WARN L233 SmtUtils]: Spent 14.70s on a formula simplification. DAG size of input: 347 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:48:43,010 WARN L233 SmtUtils]: Spent 14.71s on a formula simplification. DAG size of input: 343 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)