./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.production_cell.2.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.production_cell.2.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 56b67933c9a8b6131147f0a49ee879f84fa21fba6d9bc12c9b4243bba4ef230f --- 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-e04fb08 [2022-11-16 11:38:46,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:38:46,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:38:46,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:38:46,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:38:46,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:38:46,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:38:46,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:38:46,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:38:46,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:38:46,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:38:46,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:38:46,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:38:46,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:38:46,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:38:46,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:38:46,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:38:46,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:38:46,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:38:46,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:38:46,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:38:46,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:38:46,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:38:46,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:38:46,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:38:46,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:38:46,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:38:46,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:38:46,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:38:46,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:38:46,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:38:46,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:38:46,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:38:46,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:38:46,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:38:46,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:38:46,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:38:46,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:38:46,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:38:46,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:38:46,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:38:46,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:38:46,884 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:38:46,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:38:46,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:38:46,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:38:46,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:38:46,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:38:46,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:38:46,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:38:46,888 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:38:46,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:38:46,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:38:46,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:38:46,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:38:46,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:38:46,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:38:46,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:38:46,890 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:38:46,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:38:46,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:38:46,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:38:46,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:38:46,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:38:46,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:38:46,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:38:46,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:38:46,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:38:46,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:38:46,892 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:38:46,893 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:38:46,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:38:46,893 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_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56b67933c9a8b6131147f0a49ee879f84fa21fba6d9bc12c9b4243bba4ef230f [2022-11-16 11:38:47,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:38:47,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:38:47,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:38:47,252 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:38:47,252 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:38:47,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.production_cell.2.prop1-back-serstep.c [2022-11-16 11:38:47,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/data/29dd128f0/906034c25bee4735aa4cd79447adcaed/FLAGd93a844b3 [2022-11-16 11:38:48,090 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:38:48,091 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.production_cell.2.prop1-back-serstep.c [2022-11-16 11:38:48,107 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/data/29dd128f0/906034c25bee4735aa4cd79447adcaed/FLAGd93a844b3 [2022-11-16 11:38:48,274 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/data/29dd128f0/906034c25bee4735aa4cd79447adcaed [2022-11-16 11:38:48,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:38:48,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:38:48,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:38:48,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:38:48,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:38:48,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:38:48" (1/1) ... [2022-11-16 11:38:48,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6967f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:48, skipping insertion in model container [2022-11-16 11:38:48,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:38:48" (1/1) ... [2022-11-16 11:38:48,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:38:48,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:38:48,614 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.production_cell.2.prop1-back-serstep.c[1014,1027] [2022-11-16 11:38:49,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:38:49,090 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:38:49,102 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.production_cell.2.prop1-back-serstep.c[1014,1027] [2022-11-16 11:38:49,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:38:49,336 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:38:49,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49 WrapperNode [2022-11-16 11:38:49,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:38:49,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:38:49,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:38:49,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:38:49,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49" (1/1) ... [2022-11-16 11:38:49,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49" (1/1) ... [2022-11-16 11:38:49,584 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3712 [2022-11-16 11:38:49,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:38:49,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:38:49,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:38:49,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:38:49,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49" (1/1) ... [2022-11-16 11:38:49,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49" (1/1) ... [2022-11-16 11:38:49,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49" (1/1) ... [2022-11-16 11:38:49,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49" (1/1) ... [2022-11-16 11:38:49,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49" (1/1) ... [2022-11-16 11:38:49,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49" (1/1) ... [2022-11-16 11:38:49,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49" (1/1) ... [2022-11-16 11:38:49,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49" (1/1) ... [2022-11-16 11:38:49,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:38:49,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:38:49,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:38:49,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:38:49,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49" (1/1) ... [2022-11-16 11:38:49,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:38:49,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:49,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:49,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:38:49,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:38:49,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:38:50,520 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:38:50,523 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:38:54,555 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:38:54,579 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:38:54,580 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:38:54,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:38:54 BoogieIcfgContainer [2022-11-16 11:38:54,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:38:54,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:38:54,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:38:54,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:38:54,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:38:48" (1/3) ... [2022-11-16 11:38:54,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3797d164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:38:54, skipping insertion in model container [2022-11-16 11:38:54,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:49" (2/3) ... [2022-11-16 11:38:54,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3797d164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:38:54, skipping insertion in model container [2022-11-16 11:38:54,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:38:54" (3/3) ... [2022-11-16 11:38:54,625 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.production_cell.2.prop1-back-serstep.c [2022-11-16 11:38:54,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:38:54,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:38:54,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:38:54,767 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7c27c3f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:38:54,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:38:54,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 629 states, 627 states have (on average 1.6634768740031898) internal successors, (1043), 628 states have internal predecessors, (1043), 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) [2022-11-16 11:38:54,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-16 11:38:54,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:54,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:54,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:38:54,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:54,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1162723567, now seen corresponding path program 1 times [2022-11-16 11:38:54,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:54,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735416132] [2022-11-16 11:38:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:54,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:56,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:56,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735416132] [2022-11-16 11:38:56,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735416132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:56,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:56,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:38:56,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336129066] [2022-11-16 11:38:56,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:56,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:38:56,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:56,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:38:56,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:38:56,362 INFO L87 Difference]: Start difference. First operand has 629 states, 627 states have (on average 1.6634768740031898) internal successors, (1043), 628 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2022-11-16 11:38:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:56,985 INFO L93 Difference]: Finished difference Result 2089 states and 3477 transitions. [2022-11-16 11:38:56,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:38:56,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 149 [2022-11-16 11:38:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:57,014 INFO L225 Difference]: With dead ends: 2089 [2022-11-16 11:38:57,014 INFO L226 Difference]: Without dead ends: 1462 [2022-11-16 11:38:57,022 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 [2022-11-16 11:38:57,025 INFO L413 NwaCegarLoop]: 1395 mSDtfsCounter, 3087 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:57,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3087 Valid, 3143 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:38:57,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-16 11:38:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 627. [2022-11-16 11:38:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.659744408945687) internal successors, (1039), 626 states have internal predecessors, (1039), 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) [2022-11-16 11:38:57,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1039 transitions. [2022-11-16 11:38:57,132 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1039 transitions. Word has length 149 [2022-11-16 11:38:57,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:57,134 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 1039 transitions. [2022-11-16 11:38:57,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2022-11-16 11:38:57,136 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1039 transitions. [2022-11-16 11:38:57,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-16 11:38:57,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:57,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:57,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:38:57,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:38:57,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:57,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1682966397, now seen corresponding path program 1 times [2022-11-16 11:38:57,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:57,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414810141] [2022-11-16 11:38:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:57,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:58,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:58,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414810141] [2022-11-16 11:38:58,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414810141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:58,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:58,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:38:58,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998754159] [2022-11-16 11:38:58,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:58,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:38:58,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:58,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:38:58,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:38:58,300 INFO L87 Difference]: Start difference. First operand 627 states and 1039 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2022-11-16 11:38:58,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:58,749 INFO L93 Difference]: Finished difference Result 2489 states and 4134 transitions. [2022-11-16 11:38:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:38:58,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 150 [2022-11-16 11:38:58,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:58,764 INFO L225 Difference]: With dead ends: 2489 [2022-11-16 11:38:58,764 INFO L226 Difference]: Without dead ends: 1864 [2022-11-16 11:38:58,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:38:58,773 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 2588 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2588 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:58,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2588 Valid, 3452 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:38:58,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-11-16 11:38:58,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 842. [2022-11-16 11:38:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 1.6599286563614744) internal successors, (1396), 841 states have internal predecessors, (1396), 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) [2022-11-16 11:38:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1396 transitions. [2022-11-16 11:38:58,806 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1396 transitions. Word has length 150 [2022-11-16 11:38:58,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:58,808 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1396 transitions. [2022-11-16 11:38:58,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2022-11-16 11:38:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1396 transitions. [2022-11-16 11:38:58,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-11-16 11:38:58,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:58,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:58,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:38:58,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:38:58,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash -660316249, now seen corresponding path program 1 times [2022-11-16 11:38:58,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:58,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617472898] [2022-11-16 11:38:58,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:58,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 22 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:34,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:34,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617472898] [2022-11-16 11:39:34,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617472898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:34,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380099742] [2022-11-16 11:39:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:34,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:34,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:34,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:34,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:39:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:36,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 4696 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-16 11:39:36,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 2 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:40,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-16 11:39:43,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380099742] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:43,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:39:43,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 8] total 16 [2022-11-16 11:39:43,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285825765] [2022-11-16 11:39:43,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:43,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:39:43,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:43,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:39:43,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:39:43,298 INFO L87 Difference]: Start difference. First operand 842 states and 1396 transitions. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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) [2022-11-16 11:39:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:39:48,757 INFO L93 Difference]: Finished difference Result 4200 states and 6859 transitions. [2022-11-16 11:39:48,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:39:48,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 565 [2022-11-16 11:39:48,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:39:48,774 INFO L225 Difference]: With dead ends: 4200 [2022-11-16 11:39:48,775 INFO L226 Difference]: Without dead ends: 3575 [2022-11-16 11:39:48,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1139 GetRequests, 1123 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:39:48,781 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 5798 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 3499 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5798 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 3852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 3499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:39:48,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5798 Valid, 2519 Invalid, 3852 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [353 Valid, 3499 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-16 11:39:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2022-11-16 11:39:48,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 845. [2022-11-16 11:39:48,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 1.6587677725118484) internal successors, (1400), 844 states have internal predecessors, (1400), 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) [2022-11-16 11:39:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1400 transitions. [2022-11-16 11:39:48,827 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1400 transitions. Word has length 565 [2022-11-16 11:39:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:39:48,830 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1400 transitions. [2022-11-16 11:39:48,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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) [2022-11-16 11:39:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1400 transitions. [2022-11-16 11:39:48,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-11-16 11:39:48,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:39:48,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:48,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:39:49,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:49,063 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:39:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:49,064 INFO L85 PathProgramCache]: Analyzing trace with hash -660256667, now seen corresponding path program 1 times [2022-11-16 11:39:49,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:49,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193023082] [2022-11-16 11:39:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:49,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 22 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:05,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193023082] [2022-11-16 11:40:05,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193023082] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530448877] [2022-11-16 11:40:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:05,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:05,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:05,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:05,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:40:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:07,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 4696 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-16 11:40:07,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 2 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:09,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-16 11:40:11,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530448877] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:11,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:40:11,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 7] total 12 [2022-11-16 11:40:11,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121646215] [2022-11-16 11:40:11,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:11,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:11,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:11,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:40:11,445 INFO L87 Difference]: Start difference. First operand 845 states and 1400 transitions. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-11-16 11:40:11,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:11,909 INFO L93 Difference]: Finished difference Result 2708 states and 4494 transitions. [2022-11-16 11:40:11,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:11,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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 565 [2022-11-16 11:40:11,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:11,919 INFO L225 Difference]: With dead ends: 2708 [2022-11-16 11:40:11,919 INFO L226 Difference]: Without dead ends: 2080 [2022-11-16 11:40:11,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1137 GetRequests, 1126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:40:11,923 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 3077 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3077 SdHoareTripleChecker+Valid, 3798 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:11,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3077 Valid, 3798 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:40:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2022-11-16 11:40:11,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 842. [2022-11-16 11:40:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 1.6599286563614744) internal successors, (1396), 841 states have internal predecessors, (1396), 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) [2022-11-16 11:40:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1396 transitions. [2022-11-16 11:40:11,952 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1396 transitions. Word has length 565 [2022-11-16 11:40:11,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:11,953 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1396 transitions. [2022-11-16 11:40:11,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-11-16 11:40:11,954 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1396 transitions. [2022-11-16 11:40:11,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2022-11-16 11:40:11,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:11,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:11,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:12,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:12,175 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:12,175 INFO L85 PathProgramCache]: Analyzing trace with hash 794601159, now seen corresponding path program 1 times [2022-11-16 11:40:12,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:12,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435376493] [2022-11-16 11:40:12,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:12,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 22 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:38,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:38,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435376493] [2022-11-16 11:40:38,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435376493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:38,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060656306] [2022-11-16 11:40:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:38,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:38,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:38,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:38,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:40:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:39,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 4699 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-16 11:40:39,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 2 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:43,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:46,693 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-16 11:40:46,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:40:46,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:46,899 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-16 11:40:46,901 INFO L158 Benchmark]: Toolchain (without parser) took 118623.34ms. Allocated memory was 117.4MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 77.1MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-11-16 11:40:46,902 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory was 87.8MB in the beginning and 87.8MB in the end (delta: 27.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:40:46,902 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1059.17ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 77.1MB in the beginning and 127.9MB in the end (delta: -50.9MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2022-11-16 11:40:46,902 INFO L158 Benchmark]: Boogie Procedure Inliner took 244.61ms. Allocated memory is still 176.2MB. Free memory was 127.9MB in the beginning and 96.5MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-16 11:40:46,903 INFO L158 Benchmark]: Boogie Preprocessor took 303.21ms. Allocated memory is still 176.2MB. Free memory was 96.5MB in the beginning and 114.0MB in the end (delta: -17.5MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2022-11-16 11:40:46,903 INFO L158 Benchmark]: RCFGBuilder took 4694.86ms. Allocated memory was 176.2MB in the beginning and 352.3MB in the end (delta: 176.2MB). Free memory was 114.0MB in the beginning and 83.8MB in the end (delta: 30.2MB). Peak memory consumption was 208.3MB. Max. memory is 16.1GB. [2022-11-16 11:40:46,903 INFO L158 Benchmark]: TraceAbstraction took 112314.03ms. Allocated memory was 352.3MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 83.8MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-16 11:40:46,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory was 87.8MB in the beginning and 87.8MB in the end (delta: 27.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1059.17ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 77.1MB in the beginning and 127.9MB in the end (delta: -50.9MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 244.61ms. Allocated memory is still 176.2MB. Free memory was 127.9MB in the beginning and 96.5MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 303.21ms. Allocated memory is still 176.2MB. Free memory was 96.5MB in the beginning and 114.0MB in the end (delta: -17.5MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * RCFGBuilder took 4694.86ms. Allocated memory was 176.2MB in the beginning and 352.3MB in the end (delta: 176.2MB). Free memory was 114.0MB in the beginning and 83.8MB in the end (delta: 30.2MB). Peak memory consumption was 208.3MB. Max. memory is 16.1GB. * TraceAbstraction took 112314.03ms. Allocated memory was 352.3MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 83.8MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-16 11:40:46,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.production_cell.2.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 56b67933c9a8b6131147f0a49ee879f84fa21fba6d9bc12c9b4243bba4ef230f --- 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-e04fb08 [2022-11-16 11:40:49,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:40:49,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:40:49,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:40:49,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:40:49,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:40:49,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:40:49,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:40:49,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:40:49,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:40:49,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:40:49,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:40:49,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:40:49,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:40:49,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:40:49,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:40:49,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:40:49,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:40:49,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:40:49,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:40:49,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:40:49,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:40:49,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:40:49,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:40:49,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:40:49,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:40:49,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:40:49,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:40:49,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:40:49,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:40:49,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:40:49,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:40:49,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:40:49,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:40:49,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:40:49,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:40:49,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:40:49,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:40:49,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:40:49,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:40:49,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:40:49,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-16 11:40:49,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:40:49,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:40:49,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:40:49,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:40:49,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:40:49,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:40:49,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:40:49,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:40:49,505 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:40:49,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:40:49,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:40:49,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:40:49,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:40:49,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:40:49,508 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:40:49,508 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:40:49,508 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:40:49,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:40:49,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:40:49,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:40:49,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:40:49,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:40:49,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:40:49,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:49,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:40:49,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:40:49,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:40:49,511 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:40:49,511 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:40:49,512 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:40:49,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:40:49,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:40:49,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:40:49,513 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_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56b67933c9a8b6131147f0a49ee879f84fa21fba6d9bc12c9b4243bba4ef230f [2022-11-16 11:40:49,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:40:49,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:40:49,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:40:49,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:40:49,980 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:40:49,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.production_cell.2.prop1-back-serstep.c [2022-11-16 11:40:50,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/data/b49d08734/a08893da33bb408a97262798dc16bce2/FLAG80fbf4c0e [2022-11-16 11:40:50,809 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:40:50,809 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.production_cell.2.prop1-back-serstep.c [2022-11-16 11:40:50,833 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/data/b49d08734/a08893da33bb408a97262798dc16bce2/FLAG80fbf4c0e [2022-11-16 11:40:50,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/data/b49d08734/a08893da33bb408a97262798dc16bce2 [2022-11-16 11:40:50,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:40:50,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:40:50,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:50,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:40:50,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:40:50,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:50" (1/1) ... [2022-11-16 11:40:50,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9d88e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:50, skipping insertion in model container [2022-11-16 11:40:50,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:50" (1/1) ... [2022-11-16 11:40:51,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:40:51,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:40:51,331 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.production_cell.2.prop1-back-serstep.c[1014,1027] [2022-11-16 11:40:51,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:51,790 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:40:51,801 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.production_cell.2.prop1-back-serstep.c[1014,1027] [2022-11-16 11:40:51,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:51,951 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:40:51,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51 WrapperNode [2022-11-16 11:40:51,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:51,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:51,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:40:51,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:40:51,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:52,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:52,132 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2270 [2022-11-16 11:40:52,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:52,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:40:52,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:40:52,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:40:52,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:52,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:52,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:52,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:52,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:52,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:52,272 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:52,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:52,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:40:52,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:40:52,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:40:52,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:40:52,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:52,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:52,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:52,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:40:52,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:40:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:40:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:40:53,032 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:40:53,035 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:40:56,647 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:40:56,655 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:40:56,655 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:40:56,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:56 BoogieIcfgContainer [2022-11-16 11:40:56,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:40:56,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:40:56,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:40:56,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:40:56,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:40:50" (1/3) ... [2022-11-16 11:40:56,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3813d759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:40:56, skipping insertion in model container [2022-11-16 11:40:56,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (2/3) ... [2022-11-16 11:40:56,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3813d759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:40:56, skipping insertion in model container [2022-11-16 11:40:56,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:56" (3/3) ... [2022-11-16 11:40:56,672 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.production_cell.2.prop1-back-serstep.c [2022-11-16 11:40:56,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:40:56,691 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:40:56,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:40:56,750 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@22d80ac0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:40:56,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:40:56,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-11-16 11:40:56,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:40:56,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:56,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:40:56,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:56,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:56,769 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-16 11:40:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:40:56,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136914649] [2022-11-16 11:40:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:56,785 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 [2022-11-16 11:40:56,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:40:56,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:40:56,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:40:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:57,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:40:57,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:57,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:40:57,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:40:57,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136914649] [2022-11-16 11:40:57,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136914649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:57,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:57,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:40:57,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648720438] [2022-11-16 11:40:57,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:57,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:57,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:40:57,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:57,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:57,581 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-16 11:40:57,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:57,918 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-16 11:40:57,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:57,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-16 11:40:57,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:57,928 INFO L225 Difference]: With dead ends: 20 [2022-11-16 11:40:57,929 INFO L226 Difference]: Without dead ends: 11 [2022-11-16 11:40:57,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:40:57,935 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:57,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:40:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-16 11:40:57,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-16 11:40:57,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-11-16 11:40:57,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-16 11:40:57,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-16 11:40:57,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:57,968 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-16 11:40:57,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-16 11:40:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-16 11:40:57,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:40:57,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:57,970 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:57,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:40:58,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:40:58,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:58,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-16 11:40:58,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:40:58,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553148228] [2022-11-16 11:40:58,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:58,188 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 [2022-11-16 11:40:58,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:40:58,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:40:58,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:40:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:59,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2061 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 11:40:59,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:59,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:27,277 WARN L233 SmtUtils]: Spent 26.72s on a formula simplification. DAG size of input: 95 DAG size of output: 84 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:41:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:27,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:27,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553148228] [2022-11-16 11:41:27,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553148228] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:41:27,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:41:27,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:41:27,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831961584] [2022-11-16 11:41:27,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:41:27,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:41:27,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:41:27,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:41:27,461 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-11-16 11:41:28,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:28,150 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-16 11:41:28,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:41:28,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 8 [2022-11-16 11:41:28,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:28,155 INFO L225 Difference]: With dead ends: 16 [2022-11-16 11:41:28,155 INFO L226 Difference]: Without dead ends: 14 [2022-11-16 11:41:28,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:41:28,157 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:28,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 23 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 12 Unchecked, 0.6s Time] [2022-11-16 11:41:28,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-16 11:41:28,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-16 11:41:28,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-16 11:41:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-16 11:41:28,163 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-16 11:41:28,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:28,163 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-16 11:41:28,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-11-16 11:41:28,164 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-16 11:41:28,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:41:28,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:28,165 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 11:41:28,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:41:28,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:41:28,365 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:28,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:28,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-16 11:41:28,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:28,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693456648] [2022-11-16 11:41:28,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:41:28,373 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 [2022-11-16 11:41:28,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:28,376 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:41:28,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:41:30,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:41:30,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:41:30,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 3801 conjuncts, 161 conjunts are in the unsatisfiable core [2022-11-16 11:41:30,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:33,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:44:57,474 WARN L233 SmtUtils]: Spent 3.32m on a formula simplification. DAG size of input: 375 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:51:13,375 WARN L233 SmtUtils]: Spent 6.16m on a formula simplification. DAG size of input: 460 DAG size of output: 443 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:51:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:14,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:51:14,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693456648] [2022-11-16 11:51:14,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693456648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:14,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:51:14,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 11:51:14,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421848710] [2022-11-16 11:51:14,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:14,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:51:14,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:51:14,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:51:14,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=65, Unknown=2, NotChecked=0, Total=90 [2022-11-16 11:51:14,948 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2022-11-16 11:51:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:16,320 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-16 11:51:16,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:51:16,323 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 11 [2022-11-16 11:51:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:16,324 INFO L225 Difference]: With dead ends: 19 [2022-11-16 11:51:16,324 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 11:51:16,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 578.3s TimeCoverageRelationStatistics Valid=51, Invalid=129, Unknown=2, NotChecked=0, Total=182 [2022-11-16 11:51:16,326 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:16,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 17 Unchecked, 0.4s Time] [2022-11-16 11:51:16,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 11:51:16,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-16 11:51:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-11-16 11:51:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-16 11:51:16,332 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-16 11:51:16,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:16,332 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-16 11:51:16,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2022-11-16 11:51:16,333 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-16 11:51:16,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 11:51:16,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:16,334 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-16 11:51:16,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:16,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:51:16,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:16,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:16,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-16 11:51:16,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:51:16,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950031427] [2022-11-16 11:51:16,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:51:16,553 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 [2022-11-16 11:51:16,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:51:16,554 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:51:16,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_688ea861-4e7c-41c0-b714-12d145271e28/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:51:18,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 11:51:18,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:51:18,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 5541 conjuncts, 336 conjunts are in the unsatisfiable core [2022-11-16 11:51:18,905 INFO L286 TraceCheckSpWp]: Computing forward predicates...