./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0270b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0270b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ --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 32bit --witnessprinter.graph.data.programhash 9cac107c363e3fd6d917de6ef8bceef6babf5688036a19c829686ca43ca0273d --- 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-dbf71c6-m [2022-10-17 11:06:43,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:06:43,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:06:43,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:06:43,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:06:43,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:06:43,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:06:43,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:06:43,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:06:43,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:06:43,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:06:43,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:06:43,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:06:43,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:06:43,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:06:43,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:06:43,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:06:43,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:06:43,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:06:43,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:06:43,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:06:43,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:06:43,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:06:43,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:06:43,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:06:43,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:06:43,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:06:43,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:06:43,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:06:43,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:06:43,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:06:43,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:06:43,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:06:43,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:06:43,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:06:43,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:06:43,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:06:43,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:06:43,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:06:43,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:06:43,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:06:43,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:06:43,767 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:06:43,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:06:43,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:06:43,768 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:06:43,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:06:43,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:06:43,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:06:43,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:06:43,770 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:06:43,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:06:43,772 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:06:43,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:06:43,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:06:43,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:06:43,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:06:43,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:06:43,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:06:43,773 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:06:43,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:06:43,774 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:06:43,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:06:43,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:06:43,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:06:43,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:06:43,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:06:43,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:06:43,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:06:43,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:06:43,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:06:43,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:06:43,776 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:06:43,777 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:06:43,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:06:43,777 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_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cac107c363e3fd6d917de6ef8bceef6babf5688036a19c829686ca43ca0273d [2022-10-17 11:06:44,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:06:44,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:06:44,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:06:44,098 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:06:44,098 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:06:44,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/float_req_bl_0270b.c [2022-10-17 11:06:44,175 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/data/28dc2ce4c/0466f4e3c6e84939ba77cbf6615cfe1d/FLAG34bab6ef5 [2022-10-17 11:06:44,740 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:06:44,740 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/sv-benchmarks/c/float-newlib/float_req_bl_0270b.c [2022-10-17 11:06:44,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/data/28dc2ce4c/0466f4e3c6e84939ba77cbf6615cfe1d/FLAG34bab6ef5 [2022-10-17 11:06:45,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/data/28dc2ce4c/0466f4e3c6e84939ba77cbf6615cfe1d [2022-10-17 11:06:45,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:06:45,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:06:45,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:06:45,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:06:45,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:06:45,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1905340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45, skipping insertion in model container [2022-10-17 11:06:45,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:06:45,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:06:45,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/sv-benchmarks/c/float-newlib/float_req_bl_0270b.c[4700,4713] [2022-10-17 11:06:45,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:06:45,434 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:06:45,487 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/sv-benchmarks/c/float-newlib/float_req_bl_0270b.c[4700,4713] [2022-10-17 11:06:45,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:06:45,506 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:06:45,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45 WrapperNode [2022-10-17 11:06:45,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:06:45,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:06:45,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:06:45,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:06:45,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,572 INFO L138 Inliner]: procedures = 19, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 292 [2022-10-17 11:06:45,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:06:45,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:06:45,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:06:45,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:06:45,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,620 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:06:45,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:06:45,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:06:45,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:06:45,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45" (1/1) ... [2022-10-17 11:06:45,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:06:45,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:45,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:06:45,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:06:45,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:06:45,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:06:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:06:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 11:06:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:06:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 11:06:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:06:45,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:06:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:06:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:06:45,822 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:06:45,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:06:46,434 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:06:46,441 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:06:46,441 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-10-17 11:06:46,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:06:46 BoogieIcfgContainer [2022-10-17 11:06:46,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:06:46,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:06:46,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:06:46,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:06:46,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:06:45" (1/3) ... [2022-10-17 11:06:46,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f4b1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:06:46, skipping insertion in model container [2022-10-17 11:06:46,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:45" (2/3) ... [2022-10-17 11:06:46,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f4b1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:06:46, skipping insertion in model container [2022-10-17 11:06:46,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:06:46" (3/3) ... [2022-10-17 11:06:46,454 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0270b.c [2022-10-17 11:06:46,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:06:46,475 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:06:46,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:06:46,568 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;@438991ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:06:46,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:06:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 68 states have (on average 1.75) internal successors, (119), 69 states have internal predecessors, (119), 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) [2022-10-17 11:06:46,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 11:06:46,581 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:46,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:06:46,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:46,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:46,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1822908428, now seen corresponding path program 1 times [2022-10-17 11:06:46,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:46,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824756183] [2022-10-17 11:06:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:46,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:06:46,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:46,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824756183] [2022-10-17 11:06:46,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824756183] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:46,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:06:46,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:06:46,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386125567] [2022-10-17 11:06:46,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:46,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:06:46,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:46,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:06:46,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:06:46,795 INFO L87 Difference]: Start difference. First operand has 70 states, 68 states have (on average 1.75) internal successors, (119), 69 states have internal predecessors, (119), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-10-17 11:06:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:46,821 INFO L93 Difference]: Finished difference Result 138 states and 236 transitions. [2022-10-17 11:06:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:06:46,823 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) Word has length 9 [2022-10-17 11:06:46,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:46,833 INFO L225 Difference]: With dead ends: 138 [2022-10-17 11:06:46,833 INFO L226 Difference]: Without dead ends: 67 [2022-10-17 11:06:46,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:06:46,840 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:46,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:06:46,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-10-17 11:06:46,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-10-17 11:06:46,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3636363636363635) internal successors, (90), 66 states have internal predecessors, (90), 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) [2022-10-17 11:06:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 90 transitions. [2022-10-17 11:06:46,889 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 90 transitions. Word has length 9 [2022-10-17 11:06:46,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:46,890 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 90 transitions. [2022-10-17 11:06:46,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-10-17 11:06:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 90 transitions. [2022-10-17 11:06:46,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 11:06:46,891 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:46,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:06:46,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:06:46,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:46,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:46,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1565442385, now seen corresponding path program 1 times [2022-10-17 11:06:46,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:46,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387351765] [2022-10-17 11:06:46,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:46,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:06:47,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:47,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387351765] [2022-10-17 11:06:47,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387351765] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:47,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:06:47,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:06:47,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800956084] [2022-10-17 11:06:47,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:47,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:06:47,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:47,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:06:47,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:06:47,039 INFO L87 Difference]: Start difference. First operand 67 states and 90 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-10-17 11:06:47,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:47,125 INFO L93 Difference]: Finished difference Result 180 states and 240 transitions. [2022-10-17 11:06:47,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:06:47,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-10-17 11:06:47,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:47,128 INFO L225 Difference]: With dead ends: 180 [2022-10-17 11:06:47,128 INFO L226 Difference]: Without dead ends: 126 [2022-10-17 11:06:47,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:06:47,131 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 75 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:47,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 172 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:06:47,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-10-17 11:06:47,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 111. [2022-10-17 11:06:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3545454545454545) internal successors, (149), 110 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) [2022-10-17 11:06:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 149 transitions. [2022-10-17 11:06:47,151 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 149 transitions. Word has length 10 [2022-10-17 11:06:47,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:47,151 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 149 transitions. [2022-10-17 11:06:47,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-10-17 11:06:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 149 transitions. [2022-10-17 11:06:47,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 11:06:47,152 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:47,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:06:47,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:06:47,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash -285909876, now seen corresponding path program 1 times [2022-10-17 11:06:47,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:47,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359577215] [2022-10-17 11:06:47,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:06:47,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:06:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:06:47,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:06:47,294 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 11:06:47,295 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 11:06:47,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:06:47,301 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-17 11:06:47,306 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 11:06:47,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 11:06:47 BoogieIcfgContainer [2022-10-17 11:06:47,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 11:06:47,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 11:06:47,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 11:06:47,367 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 11:06:47,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:06:46" (3/4) ... [2022-10-17 11:06:47,371 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 11:06:47,372 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 11:06:47,372 INFO L158 Benchmark]: Toolchain (without parser) took 2291.64ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 46.0MB in the beginning and 63.8MB in the end (delta: -17.8MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-10-17 11:06:47,373 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:06:47,374 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.77ms. Allocated memory is still 83.9MB. Free memory was 45.8MB in the beginning and 55.4MB in the end (delta: -9.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-10-17 11:06:47,378 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.80ms. Allocated memory is still 83.9MB. Free memory was 55.2MB in the beginning and 52.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:06:47,382 INFO L158 Benchmark]: Boogie Preprocessor took 54.06ms. Allocated memory is still 83.9MB. Free memory was 52.7MB in the beginning and 50.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:06:47,384 INFO L158 Benchmark]: RCFGBuilder took 815.54ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 50.3MB in the beginning and 73.9MB in the end (delta: -23.6MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2022-10-17 11:06:47,385 INFO L158 Benchmark]: TraceAbstraction took 919.25ms. Allocated memory is still 109.1MB. Free memory was 72.9MB in the beginning and 63.8MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2022-10-17 11:06:47,386 INFO L158 Benchmark]: Witness Printer took 4.89ms. Allocated memory is still 109.1MB. Free memory is still 63.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:06:47,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.77ms. Allocated memory is still 83.9MB. Free memory was 45.8MB in the beginning and 55.4MB in the end (delta: -9.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.80ms. Allocated memory is still 83.9MB. Free memory was 55.2MB in the beginning and 52.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.06ms. Allocated memory is still 83.9MB. Free memory was 52.7MB in the beginning and 50.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 815.54ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 50.3MB in the beginning and 73.9MB in the end (delta: -23.6MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 919.25ms. Allocated memory is still 109.1MB. Free memory was 72.9MB in the beginning and 63.8MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Witness Printer took 4.89ms. Allocated memory is still 109.1MB. Free memory is still 63.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 200]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 199, overapproximation of someUnaryDOUBLEoperation at line 113, overapproximation of someUnaryFLOAToperation at line 111, overapproximation of someBinaryArithmeticFLOAToperation at line 130. Possible FailurePath: [L26] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L109-L117] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; VAL [huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L195] float x = 0.0f; [L196] CALL, EXPR __ieee754_asinf(x) [L120] float t, w, p, q, c, r, s; [L121] __int32_t hx, ix; VAL [\old(x)=0, huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=0] [L123] ieee_float_shape_type gf_u; [L124] gf_u.value = (x) [L125] EXPR gf_u.word [L125] (hx) = gf_u.word [L127] ix = hx & 0x7fffffff VAL [\old(x)=0, huge_asin=1000000000000000000000000000000, hx=2147483647, ix=1065353216, ix = hx & 0x7fffffff=2147483647, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=0] [L128] COND TRUE ix == 0x3f800000 [L130] return x * pio2_hi_asin + x * pio2_lo_asin; VAL [\old(x)=0, huge_asin=1000000000000000000000000000000, hx=2147483647, ix=1065353216, ix = hx & 0x7fffffff=2147483647, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=0] [L196] RET, EXPR __ieee754_asinf(x) [L196] float res = __ieee754_asinf(x); [L199] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [huge_asin=1000000000000000000000000000000, ix = hx & 0x7fffffff=2147483647, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, res=1000000000000000000000000000008, res == 0.0f && __signbit_float(res) == 0=0, tiny_sqrt=1/1000000000000000000000000000000, x=0] [L199] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L200] reach_error() VAL [huge_asin=1000000000000000000000000000000, ix = hx & 0x7fffffff=2147483647, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, res=1000000000000000000000000000008, tiny_sqrt=1/1000000000000000000000000000000, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 265 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 189 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=2, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-17 11:06:47,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0270b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ --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 32bit --witnessprinter.graph.data.programhash 9cac107c363e3fd6d917de6ef8bceef6babf5688036a19c829686ca43ca0273d --- 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-dbf71c6-m [2022-10-17 11:06:49,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:06:49,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:06:49,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:06:49,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:06:49,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:06:49,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:06:49,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:06:49,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:06:49,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:06:49,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:06:49,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:06:49,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:06:49,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:06:49,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:06:49,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:06:49,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:06:49,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:06:49,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:06:49,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:06:49,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:06:49,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:06:50,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:06:50,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:06:50,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:06:50,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:06:50,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:06:50,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:06:50,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:06:50,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:06:50,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:06:50,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:06:50,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:06:50,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:06:50,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:06:50,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:06:50,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:06:50,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:06:50,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:06:50,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:06:50,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:06:50,028 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-10-17 11:06:50,080 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:06:50,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:06:50,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:06:50,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:06:50,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:06:50,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:06:50,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:06:50,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:06:50,086 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:06:50,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:06:50,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:06:50,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:06:50,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:06:50,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:06:50,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:06:50,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:06:50,089 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 11:06:50,089 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 11:06:50,089 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 11:06:50,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:06:50,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:06:50,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:06:50,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:06:50,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:06:50,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:06:50,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:06:50,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:06:50,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:06:50,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:06:50,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:06:50,092 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 11:06:50,092 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 11:06:50,092 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:06:50,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:06:50,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:06:50,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 11:06:50,093 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_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cac107c363e3fd6d917de6ef8bceef6babf5688036a19c829686ca43ca0273d [2022-10-17 11:06:50,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:06:50,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:06:50,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:06:50,543 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:06:50,544 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:06:50,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/float_req_bl_0270b.c [2022-10-17 11:06:50,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/data/c135869b5/1ca5d3b25cad431f9a2e702124b31402/FLAG9037a68f0 [2022-10-17 11:06:51,235 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:06:51,236 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/sv-benchmarks/c/float-newlib/float_req_bl_0270b.c [2022-10-17 11:06:51,250 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/data/c135869b5/1ca5d3b25cad431f9a2e702124b31402/FLAG9037a68f0 [2022-10-17 11:06:51,557 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/data/c135869b5/1ca5d3b25cad431f9a2e702124b31402 [2022-10-17 11:06:51,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:06:51,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:06:51,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:06:51,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:06:51,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:06:51,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:51,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123ac934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51, skipping insertion in model container [2022-10-17 11:06:51,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:51,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:06:51,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:06:51,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/sv-benchmarks/c/float-newlib/float_req_bl_0270b.c[4700,4713] [2022-10-17 11:06:51,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:06:51,823 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:06:51,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/sv-benchmarks/c/float-newlib/float_req_bl_0270b.c[4700,4713] [2022-10-17 11:06:51,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:06:51,926 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:06:51,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51 WrapperNode [2022-10-17 11:06:51,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:06:51,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:06:51,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:06:51,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:06:51,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:51,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:51,986 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 257 [2022-10-17 11:06:51,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:06:51,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:06:51,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:06:51,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:06:52,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:52,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:52,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:52,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:52,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:52,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:52,070 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:52,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:52,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:06:52,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:06:52,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:06:52,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:06:52,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51" (1/1) ... [2022-10-17 11:06:52,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:06:52,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:52,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:06:52,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:06:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:06:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 11:06:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:06:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-10-17 11:06:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 11:06:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:06:52,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:06:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-10-17 11:06:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 11:06:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:06:52,286 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:06:52,288 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:07:04,119 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:07:04,128 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:07:04,128 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-10-17 11:07:04,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:07:04 BoogieIcfgContainer [2022-10-17 11:07:04,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:07:04,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:07:04,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:07:04,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:07:04,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:06:51" (1/3) ... [2022-10-17 11:07:04,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8015ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:07:04, skipping insertion in model container [2022-10-17 11:07:04,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:51" (2/3) ... [2022-10-17 11:07:04,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8015ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:07:04, skipping insertion in model container [2022-10-17 11:07:04,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:07:04" (3/3) ... [2022-10-17 11:07:04,143 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0270b.c [2022-10-17 11:07:04,164 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:07:04,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:07:04,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:07:04,227 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;@72d9d76a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:07:04,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:07:04,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 59 states have internal predecessors, (97), 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) [2022-10-17 11:07:04,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 11:07:04,241 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:04,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:04,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:04,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:04,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1900514974, now seen corresponding path program 1 times [2022-10-17 11:07:04,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:07:04,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224232648] [2022-10-17 11:07:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:04,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:07:04,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:07:04,272 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:07:04,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 11:07:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:05,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 11:07:05,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:07:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:05,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:07:05,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:07:05,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224232648] [2022-10-17 11:07:05,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224232648] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:05,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:05,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:07:05,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137801842] [2022-10-17 11:07:05,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:05,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:07:05,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:07:05,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:07:05,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:07:05,145 INFO L87 Difference]: Start difference. First operand has 60 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 59 states have internal predecessors, (97), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-10-17 11:07:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:05,169 INFO L93 Difference]: Finished difference Result 118 states and 192 transitions. [2022-10-17 11:07:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:07:05,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) Word has length 9 [2022-10-17 11:07:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:05,180 INFO L225 Difference]: With dead ends: 118 [2022-10-17 11:07:05,181 INFO L226 Difference]: Without dead ends: 57 [2022-10-17 11:07:05,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:07:05,187 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:05,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:05,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-17 11:07:05,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-10-17 11:07:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 56 states have internal predecessors, (75), 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) [2022-10-17 11:07:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2022-10-17 11:07:05,236 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 9 [2022-10-17 11:07:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:05,237 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2022-10-17 11:07:05,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-10-17 11:07:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2022-10-17 11:07:05,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 11:07:05,238 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:05,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:05,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 11:07:05,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:07:05,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:05,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:05,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1487835839, now seen corresponding path program 1 times [2022-10-17 11:07:05,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:07:05,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710759968] [2022-10-17 11:07:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:05,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:07:05,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:07:05,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:07:05,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 11:07:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:06,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 11:07:06,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:07:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:06,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:07:06,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:07:06,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710759968] [2022-10-17 11:07:06,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710759968] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:06,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:06,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:07:06,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478775790] [2022-10-17 11:07:06,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:06,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:07:06,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:07:06,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:07:06,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:07:06,481 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-10-17 11:07:09,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 11:07:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:09,807 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2022-10-17 11:07:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:07:09,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2022-10-17 11:07:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:09,811 INFO L225 Difference]: With dead ends: 66 [2022-10-17 11:07:09,811 INFO L226 Difference]: Without dead ends: 57 [2022-10-17 11:07:09,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:07:09,814 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 4 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:09,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 264 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 1 Unknown, 11 Unchecked, 3.1s Time] [2022-10-17 11:07:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-17 11:07:09,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-10-17 11:07:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 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) [2022-10-17 11:07:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2022-10-17 11:07:09,829 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 10 [2022-10-17 11:07:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:09,830 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2022-10-17 11:07:09,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-10-17 11:07:09,831 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2022-10-17 11:07:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 11:07:09,831 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:09,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:09,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-10-17 11:07:10,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:07:10,032 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:10,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:10,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1242386432, now seen corresponding path program 1 times [2022-10-17 11:07:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:07:10,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742401666] [2022-10-17 11:07:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:10,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:07:10,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:07:10,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:07:10,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 11:07:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:10,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 11:07:10,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:07:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:11,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:07:11,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:07:11,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742401666] [2022-10-17 11:07:11,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742401666] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:11,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:11,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:07:11,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034314195] [2022-10-17 11:07:11,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:11,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:07:11,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:07:11,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:07:11,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:07:11,069 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-10-17 11:07:13,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 11:07:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:14,057 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2022-10-17 11:07:14,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:07:14,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 [2022-10-17 11:07:14,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:14,059 INFO L225 Difference]: With dead ends: 66 [2022-10-17 11:07:14,059 INFO L226 Difference]: Without dead ends: 57 [2022-10-17 11:07:14,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:07:14,061 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 4 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:14,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 259 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 1 Unknown, 10 Unchecked, 2.8s Time] [2022-10-17 11:07:14,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-17 11:07:14,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-10-17 11:07:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 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) [2022-10-17 11:07:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2022-10-17 11:07:14,079 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 11 [2022-10-17 11:07:14,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:14,080 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2022-10-17 11:07:14,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-10-17 11:07:14,080 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2022-10-17 11:07:14,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 11:07:14,084 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:14,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:14,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 11:07:14,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:07:14,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:14,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash 601224780, now seen corresponding path program 1 times [2022-10-17 11:07:14,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:07:14,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177541792] [2022-10-17 11:07:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:14,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:07:14,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:07:14,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:07:14,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 11:07:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:15,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 11:07:15,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:07:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:16,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:07:16,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:07:16,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177541792] [2022-10-17 11:07:16,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177541792] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:16,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:16,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:07:16,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938985770] [2022-10-17 11:07:16,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:16,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:07:16,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:07:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:07:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:07:16,244 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2022-10-17 11:07:16,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:16,716 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2022-10-17 11:07:16,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:07:16,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) Word has length 13 [2022-10-17 11:07:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:16,719 INFO L225 Difference]: With dead ends: 66 [2022-10-17 11:07:16,719 INFO L226 Difference]: Without dead ends: 57 [2022-10-17 11:07:16,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:07:16,720 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 4 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:16,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 248 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 9 Unchecked, 0.3s Time] [2022-10-17 11:07:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-17 11:07:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-10-17 11:07:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 56 states have internal predecessors, (72), 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) [2022-10-17 11:07:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2022-10-17 11:07:16,727 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 13 [2022-10-17 11:07:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:16,728 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2022-10-17 11:07:16,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2022-10-17 11:07:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2022-10-17 11:07:16,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 11:07:16,729 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:16,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:16,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 11:07:16,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:07:16,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:16,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:16,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1089938183, now seen corresponding path program 1 times [2022-10-17 11:07:16,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:07:16,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293429854] [2022-10-17 11:07:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:16,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:07:16,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:07:16,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:07:16,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 11:07:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:17,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 11:07:17,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:07:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:17,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:07:17,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:07:17,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293429854] [2022-10-17 11:07:17,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293429854] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:17,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:17,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:07:17,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891533076] [2022-10-17 11:07:17,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:17,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:07:17,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:07:17,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:07:17,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:07:17,833 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-10-17 11:07:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:18,298 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2022-10-17 11:07:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:07:18,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2022-10-17 11:07:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:18,304 INFO L225 Difference]: With dead ends: 69 [2022-10-17 11:07:18,306 INFO L226 Difference]: Without dead ends: 66 [2022-10-17 11:07:18,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:07:18,312 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 86 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:18,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 190 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 11:07:18,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-10-17 11:07:18,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2022-10-17 11:07:18,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 58 states have internal predecessors, (74), 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) [2022-10-17 11:07:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2022-10-17 11:07:18,331 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 14 [2022-10-17 11:07:18,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:18,332 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2022-10-17 11:07:18,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-10-17 11:07:18,332 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2022-10-17 11:07:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 11:07:18,332 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:18,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:18,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 11:07:18,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:07:18,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash 980104924, now seen corresponding path program 1 times [2022-10-17 11:07:18,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:07:18,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464251755] [2022-10-17 11:07:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:18,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:07:18,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:07:18,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:07:18,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 11:07:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:19,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 11:07:19,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:07:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:19,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:07:19,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:07:19,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464251755] [2022-10-17 11:07:19,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464251755] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:19,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:19,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 11:07:19,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656647686] [2022-10-17 11:07:19,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:19,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 11:07:19,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:07:19,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 11:07:19,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 11:07:19,818 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2022-10-17 11:07:21,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:21,237 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2022-10-17 11:07:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 11:07:21,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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 18 [2022-10-17 11:07:21,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:21,239 INFO L225 Difference]: With dead ends: 66 [2022-10-17 11:07:21,239 INFO L226 Difference]: Without dead ends: 57 [2022-10-17 11:07:21,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-10-17 11:07:21,241 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 88 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:21,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 444 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 11:07:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-17 11:07:21,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-10-17 11:07:21,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 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) [2022-10-17 11:07:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2022-10-17 11:07:21,248 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 18 [2022-10-17 11:07:21,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:21,248 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2022-10-17 11:07:21,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2022-10-17 11:07:21,249 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2022-10-17 11:07:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 11:07:21,250 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:21,250 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] [2022-10-17 11:07:21,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 11:07:21,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:07:21,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:21,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1026077179, now seen corresponding path program 1 times [2022-10-17 11:07:21,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:07:21,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048860272] [2022-10-17 11:07:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:21,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:07:21,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:07:21,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:07:21,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 11:07:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:23,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 11:07:23,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:07:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:23,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:07:23,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:07:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048860272] [2022-10-17 11:07:23,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048860272] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:23,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:23,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:07:23,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626193451] [2022-10-17 11:07:23,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:23,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:07:23,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:07:23,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:07:23,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:07:23,562 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-10-17 11:07:23,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:23,835 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2022-10-17 11:07:23,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:07:23,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2022-10-17 11:07:23,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:23,837 INFO L225 Difference]: With dead ends: 104 [2022-10-17 11:07:23,837 INFO L226 Difference]: Without dead ends: 57 [2022-10-17 11:07:23,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:07:23,839 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 4 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:23,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 248 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 8 Unchecked, 0.1s Time] [2022-10-17 11:07:23,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-17 11:07:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-10-17 11:07:23,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.25) internal successors, (70), 56 states have internal predecessors, (70), 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) [2022-10-17 11:07:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2022-10-17 11:07:23,846 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 26 [2022-10-17 11:07:23,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:23,846 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2022-10-17 11:07:23,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-10-17 11:07:23,847 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2022-10-17 11:07:23,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-17 11:07:23,848 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:23,848 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] [2022-10-17 11:07:23,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-10-17 11:07:24,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:07:24,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:24,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:24,071 INFO L85 PathProgramCache]: Analyzing trace with hash 596161565, now seen corresponding path program 1 times [2022-10-17 11:07:24,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:07:24,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315767324] [2022-10-17 11:07:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:24,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:07:24,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:07:24,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:07:24,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9925-c9b8-4c68-96ad-d7a823192fe9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process