./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 --- 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-4e7fbc6 [2022-11-23 15:45:01,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:45:01,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:45:01,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:45:01,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:45:01,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:45:01,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:45:01,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:45:01,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:45:01,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:45:01,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:45:01,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:45:01,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:45:01,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:45:01,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:45:01,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:45:01,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:45:01,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:45:01,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:45:01,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:45:01,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:45:01,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:45:01,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:45:01,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:45:01,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:45:01,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:45:01,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:45:01,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:45:01,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:45:01,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:45:01,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:45:01,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:45:01,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:45:01,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:45:01,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:45:01,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:45:01,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:45:01,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:45:01,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:45:01,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:45:01,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:45:01,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:45:01,772 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:45:01,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:45:01,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:45:01,773 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:45:01,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:45:01,774 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:45:01,774 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:45:01,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:45:01,775 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:45:01,775 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:45:01,775 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:45:01,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:45:01,776 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:45:01,776 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:45:01,776 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:45:01,777 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:45:01,777 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:45:01,777 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:45:01,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:45:01,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:45:01,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:45:01,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:45:01,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:45:01,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:45:01,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:45:01,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:45:01,780 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:45:01,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:45:01,781 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:45:01,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:45:01,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:45:01,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:45:01,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:45:01,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:45:01,783 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:45:01,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:45:01,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:45:01,783 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:45:01,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:45:01,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:45:01,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:45:01,785 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_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 [2022-11-23 15:45:02,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:45:02,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:45:02,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:45:02,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:45:02,160 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:45:02,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2022-11-23 15:45:05,839 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:45:06,144 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:45:06,145 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2022-11-23 15:45:06,153 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/data/7a35f160b/731e627f275940308f62a7b684b8846f/FLAGb8d2cb4e6 [2022-11-23 15:45:06,173 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/data/7a35f160b/731e627f275940308f62a7b684b8846f [2022-11-23 15:45:06,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:45:06,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:45:06,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:45:06,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:45:06,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:45:06,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fec4113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06, skipping insertion in model container [2022-11-23 15:45:06,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:45:06,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:45:06,432 WARN L237 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_3396b943-39e8-4999-8a31-5727541ea314/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2022-11-23 15:45:06,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:45:06,447 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:45:06,468 WARN L237 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_3396b943-39e8-4999-8a31-5727541ea314/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2022-11-23 15:45:06,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:45:06,483 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:45:06,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06 WrapperNode [2022-11-23 15:45:06,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:45:06,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:45:06,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:45:06,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:45:06,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,522 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2022-11-23 15:45:06,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:45:06,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:45:06,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:45:06,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:45:06,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,548 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:45:06,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:45:06,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:45:06,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:45:06,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06" (1/1) ... [2022-11-23 15:45:06,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:45:06,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:06,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:45:06,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:45:06,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:45:06,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:45:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:45:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-23 15:45:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-23 15:45:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-23 15:45:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:45:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:45:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:45:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:45:06,704 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:45:06,707 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:45:06,895 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:45:06,992 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:45:06,992 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:45:06,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:06 BoogieIcfgContainer [2022-11-23 15:45:06,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:45:06,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:45:06,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:45:07,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:45:07,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:45:06" (1/3) ... [2022-11-23 15:45:07,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24388fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:07, skipping insertion in model container [2022-11-23 15:45:07,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:06" (2/3) ... [2022-11-23 15:45:07,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24388fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:07, skipping insertion in model container [2022-11-23 15:45:07,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:06" (3/3) ... [2022-11-23 15:45:07,007 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2022-11-23 15:45:07,030 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:45:07,030 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:45:07,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:45:07,091 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d67353, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:45:07,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:45:07,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:45:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:45:07,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:07,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:07,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:07,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:07,112 INFO L85 PathProgramCache]: Analyzing trace with hash -223655481, now seen corresponding path program 1 times [2022-11-23 15:45:07,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:07,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920389323] [2022-11-23 15:45:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:07,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:07,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:07,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920389323] [2022-11-23 15:45:07,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920389323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:07,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:07,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:45:07,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775311077] [2022-11-23 15:45:07,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:07,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:45:07,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:07,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:45:07,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:45:07,396 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:07,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:07,466 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2022-11-23 15:45:07,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:45:07,470 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-23 15:45:07,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:07,478 INFO L225 Difference]: With dead ends: 32 [2022-11-23 15:45:07,478 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 15:45:07,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:45:07,486 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:07,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:45:07,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 15:45:07,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-23 15:45:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:45:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-23 15:45:07,538 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2022-11-23 15:45:07,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:07,538 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-23 15:45:07,539 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:07,539 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-23 15:45:07,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 15:45:07,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:07,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:07,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:45:07,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:07,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1705296743, now seen corresponding path program 1 times [2022-11-23 15:45:07,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:07,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724092884] [2022-11-23 15:45:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:07,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:45:07,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:45:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:45:07,740 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:45:07,741 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:45:07,743 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:45:07,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:45:07,749 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 15:45:07,754 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:45:07,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:45:07 BoogieIcfgContainer [2022-11-23 15:45:07,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:45:07,821 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:45:07,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:45:07,821 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:45:07,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:06" (3/4) ... [2022-11-23 15:45:07,826 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:45:07,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:45:07,836 INFO L158 Benchmark]: Toolchain (without parser) took 1658.17ms. Allocated memory is still 146.8MB. Free memory was 116.6MB in the beginning and 56.8MB in the end (delta: 59.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-11-23 15:45:07,837 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 121.6MB. Free memory is still 73.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:45:07,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.00ms. Allocated memory is still 146.8MB. Free memory was 116.1MB in the beginning and 105.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:45:07,839 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.97ms. Allocated memory is still 146.8MB. Free memory was 105.6MB in the beginning and 104.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:45:07,839 INFO L158 Benchmark]: Boogie Preprocessor took 27.80ms. Allocated memory is still 146.8MB. Free memory was 104.0MB in the beginning and 102.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:45:07,840 INFO L158 Benchmark]: RCFGBuilder took 443.45ms. Allocated memory is still 146.8MB. Free memory was 102.9MB in the beginning and 85.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:45:07,841 INFO L158 Benchmark]: TraceAbstraction took 821.27ms. Allocated memory is still 146.8MB. Free memory was 85.2MB in the beginning and 57.3MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-23 15:45:07,842 INFO L158 Benchmark]: Witness Printer took 14.71ms. Allocated memory is still 146.8MB. Free memory was 57.3MB in the beginning and 56.8MB in the end (delta: 563.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:45:07,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 121.6MB. Free memory is still 73.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.00ms. Allocated memory is still 146.8MB. Free memory was 116.1MB in the beginning and 105.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.97ms. Allocated memory is still 146.8MB. Free memory was 105.6MB in the beginning and 104.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.80ms. Allocated memory is still 146.8MB. Free memory was 104.0MB in the beginning and 102.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 443.45ms. Allocated memory is still 146.8MB. Free memory was 102.9MB in the beginning and 85.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 821.27ms. Allocated memory is still 146.8MB. Free memory was 85.2MB in the beginning and 57.3MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 14.71ms. Allocated memory is still 146.8MB. Free memory was 57.3MB in the beginning and 56.8MB in the end (delta: 563.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 67]: 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 56, overapproximation of someBinaryArithmeticFLOAToperation at line 62. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L64] CALL, EXPR fmax_float(x, y) [L45] CALL, EXPR __fpclassify_float(x) VAL [unknown-#in~x-unknown=4286578697] [L22] __uint32_t w; VAL [unknown-#in~x-unknown=4286578697, x=4286578697] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] RET, EXPR __fpclassify_float(x) VAL [__fpclassify_float(x)=0, unknown-#in~x-unknown=4286578697, unknown-#in~y-unknown=4286578696, x=4286578697, y=4286578696] [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; VAL [\result=4286578696, unknown-#in~x-unknown=4286578697, unknown-#in~y-unknown=4286578696, x=4286578697, y=4286578696] [L64] RET, EXPR fmax_float(x, y) [L64] float res = fmax_float(x, y); [L66] CALL, EXPR isnan_float(res) [L56] return x != x; [L66] RET, EXPR isnan_float(res) [L66] COND TRUE !isnan_float(res) [L67] reach_error() VAL [res=4286578696, x=4286578697, y=4286578696] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-11-23 15:45:07,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 --- 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-4e7fbc6 [2022-11-23 15:45:10,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:45:10,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:45:10,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:45:11,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:45:11,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:45:11,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:45:11,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:45:11,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:45:11,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:45:11,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:45:11,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:45:11,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:45:11,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:45:11,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:45:11,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:45:11,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:45:11,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:45:11,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:45:11,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:45:11,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:45:11,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:45:11,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:45:11,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:45:11,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:45:11,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:45:11,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:45:11,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:45:11,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:45:11,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:45:11,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:45:11,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:45:11,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:45:11,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:45:11,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:45:11,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:45:11,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:45:11,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:45:11,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:45:11,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:45:11,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:45:11,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-23 15:45:11,124 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:45:11,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:45:11,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:45:11,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:45:11,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:45:11,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:45:11,131 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:45:11,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:45:11,132 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:45:11,132 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:45:11,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:45:11,134 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:45:11,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:45:11,135 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:45:11,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:45:11,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:45:11,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:45:11,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:45:11,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:45:11,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:45:11,137 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:45:11,137 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:45:11,138 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:45:11,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:45:11,138 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:45:11,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:45:11,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:45:11,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:45:11,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:45:11,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:45:11,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:45:11,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:45:11,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:45:11,142 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:45:11,142 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:45:11,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:45:11,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:45:11,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:45:11,143 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_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 [2022-11-23 15:45:11,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:45:11,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:45:11,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:45:11,611 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:45:11,612 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:45:11,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2022-11-23 15:45:15,272 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:45:15,568 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:45:15,569 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2022-11-23 15:45:15,580 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/data/261a3bc53/0ca79599d9754136b23881d28598f675/FLAG9894733e8 [2022-11-23 15:45:15,599 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/data/261a3bc53/0ca79599d9754136b23881d28598f675 [2022-11-23 15:45:15,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:45:15,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:45:15,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:45:15,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:45:15,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:45:15,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:15,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3ab7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15, skipping insertion in model container [2022-11-23 15:45:15,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:15,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:45:15,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:45:15,828 WARN L237 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_3396b943-39e8-4999-8a31-5727541ea314/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2022-11-23 15:45:15,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:45:15,854 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:45:15,881 WARN L237 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_3396b943-39e8-4999-8a31-5727541ea314/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2022-11-23 15:45:15,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:45:15,903 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:45:15,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15 WrapperNode [2022-11-23 15:45:15,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:45:15,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:45:15,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:45:15,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:45:15,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:15,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:15,969 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2022-11-23 15:45:15,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:45:15,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:45:15,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:45:15,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:45:15,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:15,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:16,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:16,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:16,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:16,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:16,050 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:16,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:16,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:45:16,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:45:16,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:45:16,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:45:16,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15" (1/1) ... [2022-11-23 15:45:16,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:45:16,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:16,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:45:16,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:45:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:45:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:45:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:45:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-23 15:45:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-23 15:45:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 15:45:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:45:16,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:45:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-23 15:45:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:45:16,326 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:45:16,328 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:45:16,679 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:45:16,686 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:45:16,686 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:45:16,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:16 BoogieIcfgContainer [2022-11-23 15:45:16,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:45:16,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:45:16,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:45:16,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:45:16,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:45:15" (1/3) ... [2022-11-23 15:45:16,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584926ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:16, skipping insertion in model container [2022-11-23 15:45:16,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:15" (2/3) ... [2022-11-23 15:45:16,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584926ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:16, skipping insertion in model container [2022-11-23 15:45:16,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:16" (3/3) ... [2022-11-23 15:45:16,705 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2022-11-23 15:45:16,733 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:45:16,734 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:45:16,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:45:16,803 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e36c17b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:45:16,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:45:16,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:45:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:45:16,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:16,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:16,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:16,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:16,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1452634366, now seen corresponding path program 1 times [2022-11-23 15:45:16,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:16,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481624689] [2022-11-23 15:45:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:16,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:16,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:16,848 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:45:16,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 15:45:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:16,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 15:45:16,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:16,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:16,990 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:45:16,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481624689] [2022-11-23 15:45:16,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481624689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:16,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:16,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:45:16,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180644599] [2022-11-23 15:45:16,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:17,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:45:17,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:45:17,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:45:17,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:45:17,040 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:17,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:17,064 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2022-11-23 15:45:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:45:17,067 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-23 15:45:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:17,077 INFO L225 Difference]: With dead ends: 43 [2022-11-23 15:45:17,077 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 15:45:17,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:45:17,085 INFO L413 NwaCegarLoop]: 29 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, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:17,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:45:17,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 15:45:17,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-23 15:45:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:45:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-23 15:45:17,133 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 13 [2022-11-23 15:45:17,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:17,134 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-23 15:45:17,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:17,134 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2022-11-23 15:45:17,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 15:45:17,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:17,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:17,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:17,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:17,338 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:17,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:17,339 INFO L85 PathProgramCache]: Analyzing trace with hash 62027172, now seen corresponding path program 1 times [2022-11-23 15:45:17,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:17,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866594790] [2022-11-23 15:45:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:17,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:17,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:17,342 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:45:17,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 15:45:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:17,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:45:17,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:17,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:17,567 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:45:17,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866594790] [2022-11-23 15:45:17,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866594790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:17,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:17,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:45:17,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094829037] [2022-11-23 15:45:17,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:17,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:45:17,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:45:17,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:45:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:17,572 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:17,651 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2022-11-23 15:45:17,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:45:17,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-23 15:45:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:17,655 INFO L225 Difference]: With dead ends: 28 [2022-11-23 15:45:17,655 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 15:45:17,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:17,657 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:17,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:45:17,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 15:45:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-23 15:45:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:45:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-11-23 15:45:17,682 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 14 [2022-11-23 15:45:17,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:17,683 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-11-23 15:45:17,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:17,684 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-11-23 15:45:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 15:45:17,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:17,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:17,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:17,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:17,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:17,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:17,887 INFO L85 PathProgramCache]: Analyzing trace with hash -371177189, now seen corresponding path program 1 times [2022-11-23 15:45:17,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:17,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48856752] [2022-11-23 15:45:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:17,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:17,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:17,890 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:45:17,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 15:45:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:17,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:45:17,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:18,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:18,016 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:45:18,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48856752] [2022-11-23 15:45:18,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48856752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:18,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:18,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:45:18,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046467588] [2022-11-23 15:45:18,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:18,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:45:18,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:45:18,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:45:18,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:18,021 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:18,075 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-11-23 15:45:18,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:45:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-23 15:45:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:18,077 INFO L225 Difference]: With dead ends: 31 [2022-11-23 15:45:18,077 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 15:45:18,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:18,080 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:18,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:45:18,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 15:45:18,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-11-23 15:45:18,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:45:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-11-23 15:45:18,088 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 15 [2022-11-23 15:45:18,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:18,089 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-11-23 15:45:18,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-11-23 15:45:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:45:18,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:18,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:18,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-23 15:45:18,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:18,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:18,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1760663552, now seen corresponding path program 1 times [2022-11-23 15:45:18,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:18,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348465651] [2022-11-23 15:45:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:18,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:18,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:18,316 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:45:18,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 15:45:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:18,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:45:18,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:18,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:18,507 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:45:18,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348465651] [2022-11-23 15:45:18,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348465651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:18,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:18,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:45:18,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986108203] [2022-11-23 15:45:18,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:18,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:45:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:45:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:45:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:18,511 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:18,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:18,615 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-11-23 15:45:18,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:45:18,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-23 15:45:18,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:18,617 INFO L225 Difference]: With dead ends: 31 [2022-11-23 15:45:18,617 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 15:45:18,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:18,619 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:18,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:45:18,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 15:45:18,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-11-23 15:45:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:45:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-11-23 15:45:18,628 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 16 [2022-11-23 15:45:18,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:18,629 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-11-23 15:45:18,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-11-23 15:45:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:45:18,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:18,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:18,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:18,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:18,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1804523831, now seen corresponding path program 1 times [2022-11-23 15:45:18,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:18,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911820382] [2022-11-23 15:45:18,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:18,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:18,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:18,860 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:45:18,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 15:45:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:18,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:45:18,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:18,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:18,995 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:45:18,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911820382] [2022-11-23 15:45:18,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911820382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:18,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:18,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:45:18,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955474890] [2022-11-23 15:45:18,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:18,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:45:18,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:45:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:45:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:18,998 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:19,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:19,088 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-11-23 15:45:19,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:45:19,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-23 15:45:19,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:19,090 INFO L225 Difference]: With dead ends: 31 [2022-11-23 15:45:19,091 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 15:45:19,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:19,092 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:19,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:45:19,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 15:45:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-11-23 15:45:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:45:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-11-23 15:45:19,102 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 17 [2022-11-23 15:45:19,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:19,102 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-11-23 15:45:19,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-11-23 15:45:19,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:45:19,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:19,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:19,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:19,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:19,320 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:19,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:19,321 INFO L85 PathProgramCache]: Analyzing trace with hash -747633130, now seen corresponding path program 1 times [2022-11-23 15:45:19,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:19,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660772812] [2022-11-23 15:45:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:19,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:19,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:19,323 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:45:19,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 15:45:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:19,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 15:45:19,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:19,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:19,588 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:45:19,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660772812] [2022-11-23 15:45:19,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660772812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:19,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:19,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:45:19,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772649755] [2022-11-23 15:45:19,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:19,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:45:19,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:45:19,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:45:19,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:19,591 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:19,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:19,884 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2022-11-23 15:45:19,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:45:19,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-23 15:45:19,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:19,889 INFO L225 Difference]: With dead ends: 28 [2022-11-23 15:45:19,889 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 15:45:19,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:45:19,891 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:19,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 96 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:45:19,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 15:45:19,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2022-11-23 15:45:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:45:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-23 15:45:19,898 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 17 [2022-11-23 15:45:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:19,898 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-23 15:45:19,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:45:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-23 15:45:19,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 15:45:19,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:19,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:19,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-23 15:45:20,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:20,123 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:20,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:20,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1982229734, now seen corresponding path program 1 times [2022-11-23 15:45:20,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:20,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398357795] [2022-11-23 15:45:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:20,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:20,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:20,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:45:20,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-23 15:45:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:20,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:45:20,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:45:20,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:20,278 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:45:20,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398357795] [2022-11-23 15:45:20,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398357795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:20,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:20,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:45:20,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793024163] [2022-11-23 15:45:20,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:20,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:45:20,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:45:20,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:45:20,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:20,287 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:45:20,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:20,412 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-11-23 15:45:20,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:45:20,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-23 15:45:20,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:20,416 INFO L225 Difference]: With dead ends: 28 [2022-11-23 15:45:20,416 INFO L226 Difference]: Without dead ends: 22 [2022-11-23 15:45:20,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:20,417 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:20,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:45:20,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-23 15:45:20,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-23 15:45:20,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 15:45:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-23 15:45:20,431 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 22 [2022-11-23 15:45:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:20,432 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-23 15:45:20,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:45:20,433 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-23 15:45:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 15:45:20,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:20,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:20,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-23 15:45:20,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:20,651 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:20,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1436544545, now seen corresponding path program 1 times [2022-11-23 15:45:20,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:20,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910572591] [2022-11-23 15:45:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:20,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:20,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:20,655 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:45:20,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 15:45:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:20,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:45:20,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:45:20,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:20,796 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:45:20,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910572591] [2022-11-23 15:45:20,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910572591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:20,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:20,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:45:20,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779640341] [2022-11-23 15:45:20,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:20,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:45:20,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:45:20,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:45:20,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:20,799 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:45:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:20,955 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-11-23 15:45:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:45:20,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-23 15:45:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:20,958 INFO L225 Difference]: With dead ends: 30 [2022-11-23 15:45:20,958 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 15:45:20,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:20,960 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:20,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:45:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 15:45:20,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-23 15:45:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 15:45:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-23 15:45:20,966 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 23 [2022-11-23 15:45:20,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:20,967 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-23 15:45:20,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:45:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-23 15:45:20,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 15:45:20,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:20,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:20,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:21,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:21,184 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:21,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash 81479618, now seen corresponding path program 1 times [2022-11-23 15:45:21,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:21,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819447712] [2022-11-23 15:45:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:21,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:21,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:21,198 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:45:21,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-23 15:45:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:21,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:45:21,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:45:21,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:21,344 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:45:21,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819447712] [2022-11-23 15:45:21,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819447712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:21,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:21,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:45:21,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945785905] [2022-11-23 15:45:21,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:21,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:45:21,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:45:21,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:45:21,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:21,348 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:45:21,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:21,415 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-11-23 15:45:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:45:21,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-23 15:45:21,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:21,418 INFO L225 Difference]: With dead ends: 30 [2022-11-23 15:45:21,418 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 15:45:21,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:21,419 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:21,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:45:21,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 15:45:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-23 15:45:21,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 15:45:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-23 15:45:21,430 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 24 [2022-11-23 15:45:21,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:21,431 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-23 15:45:21,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:45:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-23 15:45:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 15:45:21,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:21,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:21,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:21,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:21,648 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:21,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:21,648 INFO L85 PathProgramCache]: Analyzing trace with hash -594553411, now seen corresponding path program 1 times [2022-11-23 15:45:21,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:21,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643193527] [2022-11-23 15:45:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:21,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:21,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:21,650 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:45:21,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-23 15:45:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:21,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:45:21,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:45:21,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:21,759 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:45:21,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643193527] [2022-11-23 15:45:21,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643193527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:21,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:21,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:45:21,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076987781] [2022-11-23 15:45:21,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:21,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:45:21,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:45:21,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:45:21,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:21,761 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:45:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:21,870 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-11-23 15:45:21,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:45:21,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-23 15:45:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:21,872 INFO L225 Difference]: With dead ends: 30 [2022-11-23 15:45:21,872 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 15:45:21,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:45:21,873 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:21,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:45:21,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 15:45:21,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-23 15:45:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 15:45:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-23 15:45:21,879 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 25 [2022-11-23 15:45:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:21,879 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-23 15:45:21,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:45:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-23 15:45:21,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 15:45:21,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:21,881 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:21,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:22,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:22,100 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:45:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:22,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1148256924, now seen corresponding path program 1 times [2022-11-23 15:45:22,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:22,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489893406] [2022-11-23 15:45:22,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:22,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:22,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:22,102 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:45:22,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-23 15:45:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:22,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 15:45:22,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:45:22,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:22,367 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:45:22,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489893406] [2022-11-23 15:45:22,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489893406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:22,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:22,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:45:22,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206533939] [2022-11-23 15:45:22,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:22,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:45:22,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:45:22,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:45:22,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:45:22,370 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:45:22,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:22,527 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-11-23 15:45:22,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:45:22,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-23 15:45:22,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:22,528 INFO L225 Difference]: With dead ends: 22 [2022-11-23 15:45:22,528 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:45:22,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:45:22,529 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:22,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 85 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:45:22,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:45:22,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:45:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:45:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:45:22,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2022-11-23 15:45:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:22,531 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:45:22,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:45:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:45:22,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:45:22,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:45:22,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:22,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:45:22,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:45:22,973 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:45:22,973 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_~y#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2022-11-23 15:45:22,973 INFO L895 garLoopResultBuilder]: At program point L52(lines 44 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_~y#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2022-11-23 15:45:22,974 INFO L902 garLoopResultBuilder]: At program point L71(lines 58 72) the Hoare annotation is: true [2022-11-23 15:45:22,974 INFO L899 garLoopResultBuilder]: For program point L67(line 67) no Hoare annotation was computed. [2022-11-23 15:45:22,974 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-23 15:45:22,974 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 15:45:22,974 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-23 15:45:22,974 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 67) no Hoare annotation was computed. [2022-11-23 15:45:22,976 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_~y#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2022-11-23 15:45:22,976 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 49 51) no Hoare annotation was computed. [2022-11-23 15:45:22,976 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_~y#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2022-11-23 15:45:22,976 INFO L899 garLoopResultBuilder]: For program point L45-1(lines 45 47) no Hoare annotation was computed. [2022-11-23 15:45:22,976 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 69) no Hoare annotation was computed. [2022-11-23 15:45:22,977 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 21 42) no Hoare annotation was computed. [2022-11-23 15:45:22,977 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 41) no Hoare annotation was computed. [2022-11-23 15:45:22,977 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 41) no Hoare annotation was computed. [2022-11-23 15:45:22,977 INFO L899 garLoopResultBuilder]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2022-11-23 15:45:22,977 INFO L902 garLoopResultBuilder]: At program point L24-2(lines 24 28) the Hoare annotation is: true [2022-11-23 15:45:22,977 INFO L899 garLoopResultBuilder]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2022-11-23 15:45:22,978 INFO L902 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 21 42) the Hoare annotation is: true [2022-11-23 15:45:22,978 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 21 42) no Hoare annotation was computed. [2022-11-23 15:45:22,978 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 41) no Hoare annotation was computed. [2022-11-23 15:45:22,982 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:22,985 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:45:22,994 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:22,995 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,005 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,005 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,006 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,007 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,007 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,007 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:45:23 BoogieIcfgContainer [2022-11-23 15:45:23,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:45:23,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:45:23,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:45:23,013 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:45:23,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:16" (3/4) ... [2022-11-23 15:45:23,021 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:45:23,030 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2022-11-23 15:45:23,038 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-23 15:45:23,039 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-23 15:45:23,039 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 15:45:23,039 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:45:23,072 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2022-11-23 15:45:23,073 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2022-11-23 15:45:23,089 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:45:23,089 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:45:23,090 INFO L158 Benchmark]: Toolchain (without parser) took 7486.39ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 73.0MB in the beginning and 61.9MB in the end (delta: 11.1MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2022-11-23 15:45:23,091 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 65.0MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:45:23,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.29ms. Allocated memory is still 94.4MB. Free memory was 72.8MB in the beginning and 61.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 15:45:23,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.75ms. Allocated memory is still 94.4MB. Free memory was 61.5MB in the beginning and 60.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:45:23,093 INFO L158 Benchmark]: Boogie Preprocessor took 94.48ms. Allocated memory is still 94.4MB. Free memory was 60.0MB in the beginning and 58.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:45:23,094 INFO L158 Benchmark]: RCFGBuilder took 619.70ms. Allocated memory is still 94.4MB. Free memory was 58.5MB in the beginning and 69.6MB in the end (delta: -11.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2022-11-23 15:45:23,094 INFO L158 Benchmark]: TraceAbstraction took 6312.99ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 68.9MB in the beginning and 64.7MB in the end (delta: 4.1MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-11-23 15:45:23,095 INFO L158 Benchmark]: Witness Printer took 77.26ms. Allocated memory is still 113.2MB. Free memory was 64.7MB in the beginning and 61.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:45:23,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 65.0MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.29ms. Allocated memory is still 94.4MB. Free memory was 72.8MB in the beginning and 61.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.75ms. Allocated memory is still 94.4MB. Free memory was 61.5MB in the beginning and 60.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 94.48ms. Allocated memory is still 94.4MB. Free memory was 60.0MB in the beginning and 58.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 619.70ms. Allocated memory is still 94.4MB. Free memory was 58.5MB in the beginning and 69.6MB in the end (delta: -11.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * TraceAbstraction took 6312.99ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 68.9MB in the beginning and 64.7MB in the end (delta: 4.1MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * Witness Printer took 77.26ms. Allocated memory is still 113.2MB. Free memory was 64.7MB in the beginning and 61.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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 - PositiveResult [Line: 67]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.2s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 768 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 484 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 284 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 18 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 19 NumberOfFragments, 66 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 49 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 211 NumberOfCodeBlocks, 211 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 200 ConstructedInterpolants, 8 QuantifiedInterpolants, 304 SizeOfPredicates, 18 NumberOfNonLiveVariables, 761 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 30/30 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 56]: Loop Invariant [2022-11-23 15:45:23,124 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,124 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,125 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,125 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant [2022-11-23 15:45:23,128 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,128 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,128 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-23 15:45:23,129 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-23 15:45:23,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3396b943-39e8-4999-8a31-5727541ea314/bin/utaipan-Q6hlc19bkW/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 Writing output log to file Ultimate.log Result: TRUE