./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7 --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 de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:14:37,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:14:37,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:14:37,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:14:37,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:14:37,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:14:37,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:14:37,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:14:37,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:14:37,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:14:37,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:14:37,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:14:37,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:14:37,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:14:37,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:14:37,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:14:37,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:14:37,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:14:37,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:14:37,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:14:37,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:14:37,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:14:37,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:14:37,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:14:37,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:14:37,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:14:37,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:14:37,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:14:37,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:14:37,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:14:37,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:14:37,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:14:37,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:14:37,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:14:37,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:14:37,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:14:37,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:14:37,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:14:37,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:14:37,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:14:37,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:14:37,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:14:37,604 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:14:37,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:14:37,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:14:37,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:14:37,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:14:37,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:14:37,607 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:14:37,607 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:14:37,607 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:14:37,607 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:14:37,607 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:14:37,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:14:37,608 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:14:37,608 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:14:37,608 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:14:37,608 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:14:37,609 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:14:37,609 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:14:37,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:14:37,610 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:14:37,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:14:37,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:14:37,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:14:37,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:14:37,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:14:37,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:14:37,611 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:14:37,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:14:37,612 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:14:37,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:14:37,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:14:37,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:14:37,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:14:37,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:14:37,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:14:37,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:14:37,614 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:14:37,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:14:37,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:14:37,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:14:37,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:14:37,615 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 [2021-11-25 19:14:37,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:14:37,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:14:37,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:14:37,869 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:14:37,870 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:14:37,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-11-25 19:14:37,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/data/670f85422/825cd9af2e4a44439611d176bd27a00a/FLAGef199c280 [2021-11-25 19:14:38,462 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:14:38,463 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-11-25 19:14:38,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/data/670f85422/825cd9af2e4a44439611d176bd27a00a/FLAGef199c280 [2021-11-25 19:14:38,832 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/data/670f85422/825cd9af2e4a44439611d176bd27a00a [2021-11-25 19:14:38,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:14:38,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:14:38,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:14:38,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:14:38,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:14:38,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:14:38" (1/1) ... [2021-11-25 19:14:38,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae3dc9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:38, skipping insertion in model container [2021-11-25 19:14:38,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:14:38" (1/1) ... [2021-11-25 19:14:38,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:14:38,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:14:39,054 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-11-25 19:14:39,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:14:39,088 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:14:39,098 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-11-25 19:14:39,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:14:39,116 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:14:39,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:39 WrapperNode [2021-11-25 19:14:39,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:14:39,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:14:39,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:14:39,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:14:39,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:39" (1/1) ... [2021-11-25 19:14:39,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:39" (1/1) ... [2021-11-25 19:14:39,150 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2021-11-25 19:14:39,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:14:39,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:14:39,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:14:39,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:14:39,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:39" (1/1) ... [2021-11-25 19:14:39,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:39" (1/1) ... [2021-11-25 19:14:39,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:39" (1/1) ... [2021-11-25 19:14:39,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:39" (1/1) ... [2021-11-25 19:14:39,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:39" (1/1) ... [2021-11-25 19:14:39,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:39" (1/1) ... [2021-11-25 19:14:39,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:39" (1/1) ... [2021-11-25 19:14:39,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:14:39,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:14:39,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:14:39,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:14:39,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:39" (1/1) ... [2021-11-25 19:14:39,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:14:39,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:39,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:14:39,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:14:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:14:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:14:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:14:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:14:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:14:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:14:39,337 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:14:39,339 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:14:39,448 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:14:39,462 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:14:39,462 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:14:39,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:14:39 BoogieIcfgContainer [2021-11-25 19:14:39,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:14:39,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:14:39,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:14:39,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:14:39,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:14:38" (1/3) ... [2021-11-25 19:14:39,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c3ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:14:39, skipping insertion in model container [2021-11-25 19:14:39,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:39" (2/3) ... [2021-11-25 19:14:39,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c3ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:14:39, skipping insertion in model container [2021-11-25 19:14:39,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:14:39" (3/3) ... [2021-11-25 19:14:39,499 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound2.c [2021-11-25 19:14:39,504 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:14:39,504 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:14:39,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:14:39,590 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:14:39,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:14:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-11-25 19:14:39,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:14:39,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:39,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:14:39,613 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:39,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2109616992, now seen corresponding path program 1 times [2021-11-25 19:14:39,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:14:39,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598955415] [2021-11-25 19:14:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:39,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:14:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:14:39,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:14:39,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598955415] [2021-11-25 19:14:39,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598955415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:39,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:39,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:14:39,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136656614] [2021-11-25 19:14:39,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:39,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:14:39,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:14:39,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:14:39,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:14:39,817 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:14:39,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:39,866 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-11-25 19:14:39,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:14:39,871 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 19:14:39,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:39,897 INFO L225 Difference]: With dead ends: 27 [2021-11-25 19:14:39,901 INFO L226 Difference]: Without dead ends: 12 [2021-11-25 19:14:39,904 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:14:39,908 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:39,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:14:39,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-25 19:14:39,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-25 19:14:39,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:14:39,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-11-25 19:14:39,958 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2021-11-25 19:14:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:39,959 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-11-25 19:14:39,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:14:39,960 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-11-25 19:14:39,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:14:39,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:39,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:39,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:14:39,963 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:39,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:39,968 INFO L85 PathProgramCache]: Analyzing trace with hash 574117089, now seen corresponding path program 1 times [2021-11-25 19:14:39,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:14:39,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913971754] [2021-11-25 19:14:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:39,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:14:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:14:40,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:14:40,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913971754] [2021-11-25 19:14:40,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913971754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:40,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:40,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:14:40,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369663340] [2021-11-25 19:14:40,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:40,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:14:40,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:14:40,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:14:40,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:14:40,085 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:14:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:40,114 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-11-25 19:14:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:14:40,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 19:14:40,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:40,116 INFO L225 Difference]: With dead ends: 21 [2021-11-25 19:14:40,116 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 19:14:40,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:14:40,122 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:40,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:14:40,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 19:14:40,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 19:14:40,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:14:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-25 19:14:40,136 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2021-11-25 19:14:40,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:40,138 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-25 19:14:40,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:14:40,139 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-25 19:14:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:14:40,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:40,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:40,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:14:40,147 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:40,148 INFO L85 PathProgramCache]: Analyzing trace with hash 575904549, now seen corresponding path program 1 times [2021-11-25 19:14:40,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:14:40,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24674258] [2021-11-25 19:14:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:40,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:14:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:14:40,173 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:14:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:14:40,230 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:14:40,230 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:14:40,231 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:14:40,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:14:40,241 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-25 19:14:40,244 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:14:40,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:14:40 BoogieIcfgContainer [2021-11-25 19:14:40,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:14:40,275 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:14:40,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:14:40,275 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:14:40,276 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:14:39" (3/4) ... [2021-11-25 19:14:40,280 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:14:40,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:14:40,281 INFO L158 Benchmark]: Toolchain (without parser) took 1445.46ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 66.1MB in the beginning and 87.1MB in the end (delta: -21.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:14:40,282 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory was 55.4MB in the beginning and 55.4MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:14:40,282 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.86ms. Allocated memory is still 100.7MB. Free memory was 65.9MB in the beginning and 74.5MB in the end (delta: -8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:14:40,282 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.44ms. Allocated memory is still 100.7MB. Free memory was 74.5MB in the beginning and 73.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:14:40,288 INFO L158 Benchmark]: Boogie Preprocessor took 38.25ms. Allocated memory is still 100.7MB. Free memory was 73.2MB in the beginning and 72.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:14:40,288 INFO L158 Benchmark]: RCFGBuilder took 285.84ms. Allocated memory is still 100.7MB. Free memory was 72.1MB in the beginning and 63.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:14:40,289 INFO L158 Benchmark]: TraceAbstraction took 795.32ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 62.8MB in the beginning and 87.5MB in the end (delta: -24.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:14:40,289 INFO L158 Benchmark]: Witness Printer took 5.58ms. Allocated memory is still 121.6MB. Free memory was 87.5MB in the beginning and 87.1MB in the end (delta: 306.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:14:40,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory was 55.4MB in the beginning and 55.4MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.86ms. Allocated memory is still 100.7MB. Free memory was 65.9MB in the beginning and 74.5MB in the end (delta: -8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.44ms. Allocated memory is still 100.7MB. Free memory was 74.5MB in the beginning and 73.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.25ms. Allocated memory is still 100.7MB. Free memory was 73.2MB in the beginning and 72.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 285.84ms. Allocated memory is still 100.7MB. Free memory was 72.1MB in the beginning and 63.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 795.32ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 62.8MB in the beginning and 87.5MB in the end (delta: -24.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.58ms. Allocated memory is still 121.6MB. Free memory was 87.5MB in the beginning and 87.1MB in the end (delta: 306.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0, r=0] [L32] EXPR counter++ VAL [counter=1, counter++=0, r=0] [L32] COND TRUE counter++<2 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 25 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 19:14:40,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7 --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 de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:14:42,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:14:42,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:14:42,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:14:42,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:14:42,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:14:42,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:14:42,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:14:42,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:14:42,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:14:42,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:14:42,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:14:42,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:14:42,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:14:42,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:14:42,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:14:42,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:14:42,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:14:42,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:14:42,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:14:42,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:14:42,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:14:42,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:14:42,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:14:42,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:14:42,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:14:42,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:14:42,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:14:42,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:14:42,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:14:42,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:14:42,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:14:42,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:14:42,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:14:42,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:14:42,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:14:42,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:14:42,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:14:42,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:14:42,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:14:42,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:14:42,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:14:42,931 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:14:42,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:14:42,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:14:42,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:14:42,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:14:42,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:14:42,934 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:14:42,934 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:14:42,934 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:14:42,934 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:14:42,935 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:14:42,935 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:14:42,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:14:42,936 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:14:42,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:14:42,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:14:42,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:14:42,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:14:42,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:14:42,937 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:14:42,937 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:14:42,938 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:14:42,938 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:14:42,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:14:42,938 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:14:42,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:14:42,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:14:42,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:14:42,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:14:42,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:14:42,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:14:42,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:14:42,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:14:42,940 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:14:42,941 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:42,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:14:42,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:14:42,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:14:42,942 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_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 [2021-11-25 19:14:43,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:14:43,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:14:43,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:14:43,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:14:43,413 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:14:43,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-11-25 19:14:43,480 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/data/9b3bf8e60/704c5e5ebdef43869543209695e41d2d/FLAG7357ef02f [2021-11-25 19:14:43,939 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:14:43,940 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-11-25 19:14:43,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/data/9b3bf8e60/704c5e5ebdef43869543209695e41d2d/FLAG7357ef02f [2021-11-25 19:14:44,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/data/9b3bf8e60/704c5e5ebdef43869543209695e41d2d [2021-11-25 19:14:44,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:14:44,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:14:44,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:14:44,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:14:44,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:14:44,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57255d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44, skipping insertion in model container [2021-11-25 19:14:44,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:14:44,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:14:44,577 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-11-25 19:14:44,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:14:44,610 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:14:44,633 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-11-25 19:14:44,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:14:44,687 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:14:44,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44 WrapperNode [2021-11-25 19:14:44,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:14:44,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:14:44,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:14:44,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:14:44,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,741 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2021-11-25 19:14:44,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:14:44,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:14:44,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:14:44,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:14:44,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:14:44,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:14:44,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:14:44,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:14:44,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:14:44,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:44,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:14:44,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:14:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:14:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:14:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:14:44,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:14:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:14:44,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:14:44,932 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:14:44,933 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:14:46,117 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:14:46,124 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:14:46,124 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:14:46,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:14:46 BoogieIcfgContainer [2021-11-25 19:14:46,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:14:46,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:14:46,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:14:46,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:14:46,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:14:44" (1/3) ... [2021-11-25 19:14:46,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c50b43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:14:46, skipping insertion in model container [2021-11-25 19:14:46,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (2/3) ... [2021-11-25 19:14:46,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c50b43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:14:46, skipping insertion in model container [2021-11-25 19:14:46,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:14:46" (3/3) ... [2021-11-25 19:14:46,136 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound2.c [2021-11-25 19:14:46,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:14:46,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:14:46,203 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:14:46,209 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:14:46,210 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:14:46,225 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) [2021-11-25 19:14:46,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:14:46,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:46,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:46,231 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:46,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:46,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2021-11-25 19:14:46,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:46,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657553341] [2021-11-25 19:14:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:46,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:46,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:46,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:46,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:14:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:46,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:14:46,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:14:46,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:46,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:46,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657553341] [2021-11-25 19:14:46,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657553341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:46,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:46,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:14:46,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685935099] [2021-11-25 19:14:46,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:46,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:14:46,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:46,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:14:46,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:14:46,933 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:14:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:46,952 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2021-11-25 19:14:46,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:14:46,954 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 19:14:46,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:46,967 INFO L225 Difference]: With dead ends: 32 [2021-11-25 19:14:46,968 INFO L226 Difference]: Without dead ends: 13 [2021-11-25 19:14:46,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:14:46,978 INFO L933 BasicCegarLoop]: 19 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, 19 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 [2021-11-25 19:14:46,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:14:46,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-25 19:14:47,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-25 19:14:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:14:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-25 19:14:47,022 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2021-11-25 19:14:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:47,023 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-25 19:14:47,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:14:47,024 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-25 19:14:47,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:14:47,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:47,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:47,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-25 19:14:47,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:47,239 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:47,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:47,240 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2021-11-25 19:14:47,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:47,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347991057] [2021-11-25 19:14:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:47,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:47,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:47,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:47,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:14:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:47,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:14:47,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:14:47,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:47,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:47,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347991057] [2021-11-25 19:14:47,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347991057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:47,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:47,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:14:47,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114811955] [2021-11-25 19:14:47,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:47,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:14:47,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:47,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:14:47,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:14:47,696 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:14:48,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:48,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:48,924 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-25 19:14:48,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:14:48,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 19:14:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:48,926 INFO L225 Difference]: With dead ends: 22 [2021-11-25 19:14:48,926 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 19:14:48,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:14:48,928 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:48,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 19:14:48,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 19:14:48,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-25 19:14:48,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:14:48,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-25 19:14:48,934 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2021-11-25 19:14:48,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:48,935 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-25 19:14:48,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:14:48,935 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-25 19:14:48,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:14:48,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:48,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:48,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-25 19:14:49,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:49,147 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:49,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:49,147 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2021-11-25 19:14:49,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:49,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135109017] [2021-11-25 19:14:49,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:49,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:49,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:49,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:49,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:14:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:51,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:14:51,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:18,437 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|))) is different from false [2021-11-25 19:15:31,192 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= c___VERIFIER_assert_~cond (_ bv1 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= c___VERIFIER_assert_~cond (_ bv0 32)))) is different from false [2021-11-25 19:15:39,390 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2021-11-25 19:15:41,422 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from true [2021-11-25 19:15:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:15:41,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:15:41,423 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:41,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135109017] [2021-11-25 19:15:41,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135109017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:41,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:15:41,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:15:41,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973413345] [2021-11-25 19:15:41,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:41,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:15:41,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:41,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:15:41,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=8, Unknown=4, NotChecked=18, Total=42 [2021-11-25 19:15:41,426 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:15:43,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:46,090 WARN L838 $PredicateComparison]: unable to prove that (and (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-25 19:15:49,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:51,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:53,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:56,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:58,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:58,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:58,247 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-11-25 19:15:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:15:58,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 19:15:58,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:58,349 INFO L225 Difference]: With dead ends: 24 [2021-11-25 19:15:58,350 INFO L226 Difference]: Without dead ends: 22 [2021-11-25 19:15:58,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=14, Invalid=9, Unknown=5, NotChecked=28, Total=56 [2021-11-25 19:15:58,352 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:58,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 34 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 6 Unknown, 59 Unchecked, 14.7s Time] [2021-11-25 19:15:58,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-25 19:15:58,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-11-25 19:15:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:15:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-25 19:15:58,362 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2021-11-25 19:15:58,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:58,363 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-25 19:15:58,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:15:58,363 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-25 19:15:58,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 19:15:58,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:58,365 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:58,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:58,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:15:58,579 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:58,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:58,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1780785341, now seen corresponding path program 1 times [2021-11-25 19:15:58,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:58,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541025291] [2021-11-25 19:15:58,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:58,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:58,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:58,582 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:58,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:15:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:58,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:15:58,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:05,290 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2021-11-25 19:16:07,352 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2021-11-25 19:16:19,747 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) is different from false [2021-11-25 19:16:28,049 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (= c___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-11-25 19:16:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:16:28,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:16:53,083 WARN L227 SmtUtils]: Spent 16.61s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 19:17:09,673 WARN L227 SmtUtils]: Spent 16.59s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 271] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 19:17:17,921 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2021-11-25 19:17:32,386 WARN L860 $PredicateComparison]: unable to prove that (or (= c___VERIFIER_assert_~cond (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2021-11-25 19:17:32,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:17:32,396 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:17:32,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541025291] [2021-11-25 19:17:32,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541025291] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:17:32,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [491965319] [2021-11-25 19:17:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:17:32,397 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:17:32,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:17:32,414 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:17:32,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-25 19:17:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:17:32,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:17:32,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:17:49,042 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) is different from false [2021-11-25 19:17:57,293 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (= c___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-11-25 19:17:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:17:57,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:18:22,202 WARN L227 SmtUtils]: Spent 16.60s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 19:18:38,840 WARN L227 SmtUtils]: Spent 16.64s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 271] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 19:18:47,111 WARN L860 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|)))))) is different from true [2021-11-25 19:19:01,576 WARN L860 $PredicateComparison]: unable to prove that (or (= c___VERIFIER_assert_~cond (_ bv0 32)) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|)))))) is different from true [2021-11-25 19:19:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:19:01,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [491965319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:19:01,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522693018] [2021-11-25 19:19:01,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:01,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:01,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:01,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:01,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:19:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:01,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:19:01,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:18,393 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) is different from false [2021-11-25 19:19:26,658 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))) (= c___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-11-25 19:19:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:19:26,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:19:51,449 WARN L227 SmtUtils]: Spent 16.44s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 19:20:07,924 WARN L227 SmtUtils]: Spent 16.47s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 271] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 19:20:16,187 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2021-11-25 19:20:30,626 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) (= c___VERIFIER_assert_~cond (_ bv0 32)) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2021-11-25 19:20:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:20:30,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522693018] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:20:30,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:20:30,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 18 [2021-11-25 19:20:30,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986031768] [2021-11-25 19:20:30,636 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:20:30,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 19:20:30,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:20:30,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 19:20:30,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=25, Unknown=14, NotChecked=234, Total=306 [2021-11-25 19:20:30,639 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 15 states have internal predecessors, (26), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:20:32,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:34,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:36,991 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= c___VERIFIER_assert_~cond (_ bv0 32))) (.cse1 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (= c___VERIFIER_assert_~cond |c___VERIFIER_assert_#in~cond|) (or .cse0 .cse1 (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|)))))) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) .cse0 .cse1) (or .cse0 (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse1))) is different from true [2021-11-25 19:20:39,141 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) .cse0) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse0) (or .cse0 (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|)))))) .cse0)) is different from true [2021-11-25 19:20:41,298 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) is different from false [2021-11-25 19:20:43,466 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c___VERIFIER_assert_~cond (_ bv0 32))) (.cse1 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (= c___VERIFIER_assert_~cond |c___VERIFIER_assert_#in~cond|) (not .cse0) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (or .cse0 .cse1 (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|)))))) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) .cse0 .cse1) (or .cse0 (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse1) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))) (= c___VERIFIER_assert_~cond (_ bv1 32)))) is different from false [2021-11-25 19:20:45,608 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= c___VERIFIER_assert_~cond (_ bv0 32))) (.cse1 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (= c___VERIFIER_assert_~cond |c___VERIFIER_assert_#in~cond|) (not .cse0) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (or .cse0 .cse1 (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|)))))) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) .cse0 .cse1) (or .cse0 (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse1) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))) (= c___VERIFIER_assert_~cond (_ bv1 32)))) is different from true [2021-11-25 19:20:45,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:20:45,611 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-11-25 19:20:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:20:45,611 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 15 states have internal predecessors, (26), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 14 [2021-11-25 19:20:45,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:20:45,613 INFO L225 Difference]: With dead ends: 25 [2021-11-25 19:20:45,613 INFO L226 Difference]: Without dead ends: 20 [2021-11-25 19:20:45,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.7s TimeCoverageRelationStatistics Valid=41, Invalid=28, Unknown=19, NotChecked=374, Total=462 [2021-11-25 19:20:45,615 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:20:45,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 2 Unknown, 88 Unchecked, 4.2s Time] [2021-11-25 19:20:45,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-25 19:20:45,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-25 19:20:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:20:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-25 19:20:45,621 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2021-11-25 19:20:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:20:45,621 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-25 19:20:45,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 15 states have internal predecessors, (26), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:20:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-25 19:20:45,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:20:45,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:20:45,623 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:20:45,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:20:45,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:20:46,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 19:20:46,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:20:46,230 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:20:46,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:20:46,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1542398814, now seen corresponding path program 1 times [2021-11-25 19:20:46,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:20:46,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246040] [2021-11-25 19:20:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:46,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:20:46,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:20:46,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:20:46,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 19:20:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:46,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:20:46,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:20:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:20:47,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:20:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:20:47,632 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:20:47,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246040] [2021-11-25 19:20:47,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246040] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:20:47,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [374821136] [2021-11-25 19:20:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:47,633 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:20:47,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:20:47,635 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:20:47,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-25 19:20:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:48,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:20:48,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:20:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:20:48,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:20:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:20:48,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [374821136] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:20:48,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303891502] [2021-11-25 19:20:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:48,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:20:48,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:20:48,554 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:20:48,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:20:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:49,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:20:49,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:20:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:20:49,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:20:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:20:49,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303891502] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:20:49,449 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:20:49,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5, 4, 5] total 8 [2021-11-25 19:20:49,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869293722] [2021-11-25 19:20:49,449 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:20:49,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:20:49,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:20:49,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:20:49,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:20:49,451 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:20:52,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:54,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:56,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:58,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:58,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:20:58,534 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-11-25 19:20:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:20:58,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-11-25 19:20:58,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:20:58,536 INFO L225 Difference]: With dead ends: 30 [2021-11-25 19:20:58,536 INFO L226 Difference]: Without dead ends: 23 [2021-11-25 19:20:58,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:20:58,538 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:20:58,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 64 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 9.0s Time] [2021-11-25 19:20:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-25 19:20:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-25 19:20:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:20:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-11-25 19:20:58,546 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2021-11-25 19:20:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:20:58,547 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-11-25 19:20:58,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:20:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-11-25 19:20:58,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:20:58,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:20:58,548 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:20:58,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-25 19:20:58,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-25 19:20:59,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:20:59,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:20:59,163 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:20:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:20:59,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1540611354, now seen corresponding path program 1 times [2021-11-25 19:20:59,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:20:59,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976475887] [2021-11-25 19:20:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:59,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:20:59,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:20:59,165 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:20:59,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 19:21:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:21:04,306 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:21:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:21:13,751 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 19:21:13,752 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:21:13,753 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:21:13,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:21:13,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:21:13,958 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-25 19:21:13,960 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:21:13,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:21:13 BoogieIcfgContainer [2021-11-25 19:21:13,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:21:13,981 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:21:13,981 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:21:13,981 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:21:13,982 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:14:46" (3/4) ... [2021-11-25 19:21:13,984 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 19:21:14,019 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:21:14,020 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:21:14,020 INFO L158 Benchmark]: Toolchain (without parser) took 389679.97ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 36.5MB in the beginning and 42.0MB in the end (delta: -5.5MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-11-25 19:21:14,021 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 58.7MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:21:14,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.42ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 40.9MB in the end (delta: -4.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 19:21:14,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.86ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 39.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:21:14,022 INFO L158 Benchmark]: Boogie Preprocessor took 47.51ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 38.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:21:14,022 INFO L158 Benchmark]: RCFGBuilder took 1335.26ms. Allocated memory is still 58.7MB. Free memory was 38.2MB in the beginning and 29.6MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:21:14,023 INFO L158 Benchmark]: TraceAbstraction took 387851.91ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 29.0MB in the beginning and 44.1MB in the end (delta: -15.1MB). Peak memory consumption was 227.7kB. Max. memory is 16.1GB. [2021-11-25 19:21:14,023 INFO L158 Benchmark]: Witness Printer took 38.77ms. Allocated memory is still 71.3MB. Free memory was 44.1MB in the beginning and 42.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:21:14,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 58.7MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.42ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 40.9MB in the end (delta: -4.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.86ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 39.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.51ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 38.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1335.26ms. Allocated memory is still 58.7MB. Free memory was 38.2MB in the beginning and 29.6MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 387851.91ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 29.0MB in the beginning and 44.1MB in the end (delta: -15.1MB). Peak memory consumption was 227.7kB. Max. memory is 16.1GB. * Witness Printer took 38.77ms. Allocated memory is still 71.3MB. Free memory was 44.1MB in the beginning and 42.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [a=15727414336364550, counter=0, r=0, x=7863707168182275] [L32] EXPR counter++ VAL [a=15727414336364550, counter=1, counter++=0, r=0, x=7863707168182275] [L32] COND TRUE counter++<2 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=1, counter=1] [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L33] RET __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [a=15727414336364550, counter=1, r=0, x=7863707168182275] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [a=15727414336364550, counter=1, r=1, x=7863707168182275] [L32] EXPR counter++ VAL [a=15727414336364550, counter=2, counter++=1, r=1, x=7863707168182275] [L32] COND TRUE counter++<2 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0, counter=2] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=2] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 387.8s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 42.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 29.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 219 SdHoareTripleChecker+Invalid, 28.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 147 IncrementalHoareTripleChecker+Unchecked, 151 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 68 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 194 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 21 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 55.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=5, InterpolantAutomatonStates: 26, 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, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 10.7s SatisfiabilityAnalysisTime, 322.8s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 188 ConstructedInterpolants, 18 QuantifiedInterpolants, 1304 SizeOfPredicates, 18 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 18/36 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 proved your program to be incorrect! [2021-11-25 19:21:14,242 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-25 19:21:14,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db13fe02-700b-489b-a3f1-c9ab84204c7b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE