./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 ee159be1ed42c29b70080447b490f7a1aeb72331afc90e5794e0e8d61cb20d74 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:27:43,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:27:43,642 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:27:43,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:27:43,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:27:43,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:27:43,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:27:43,671 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:27:43,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:27:43,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:27:43,673 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:27:43,673 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:27:43,674 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:27:43,674 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:27:43,675 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:27:43,675 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:27:43,676 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:27:43,676 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:27:43,677 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:27:43,677 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:27:43,678 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:27:43,678 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:27:43,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:27:43,679 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:27:43,680 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:27:43,680 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:27:43,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:27:43,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:27:43,681 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:27:43,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:27:43,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:27:43,683 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:27:43,683 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:27:43,683 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:27:43,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:27:43,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:27:43,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:27:43,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:27:43,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:27:43,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:27:43,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:27:43,685 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:27:43,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:27:43,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:27:43,686 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:27:43,686 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:27:43,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:27:43,686 INFO L153 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_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee159be1ed42c29b70080447b490f7a1aeb72331afc90e5794e0e8d61cb20d74 [2023-12-02 16:27:43,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:27:43,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:27:43,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:27:43,941 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:27:43,941 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:27:43,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c [2023-12-02 16:27:46,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:27:46,848 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:27:46,849 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c [2023-12-02 16:27:46,856 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/data/489de591d/4f6363ed28ef4008b68f394a9b988cd2/FLAG5da30d583 [2023-12-02 16:27:46,871 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/data/489de591d/4f6363ed28ef4008b68f394a9b988cd2 [2023-12-02 16:27:46,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:27:46,875 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:27:46,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:27:46,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:27:46,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:27:46,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:27:46" (1/1) ... [2023-12-02 16:27:46,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36cd7865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:46, skipping insertion in model container [2023-12-02 16:27:46,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:27:46" (1/1) ... [2023-12-02 16:27:46,904 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:27:47,050 WARN L240 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_a9250139-eca2-4943-9637-48967fab204d/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2023-12-02 16:27:47,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:27:47,066 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:27:47,080 WARN L240 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_a9250139-eca2-4943-9637-48967fab204d/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2023-12-02 16:27:47,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:27:47,095 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:27:47,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47 WrapperNode [2023-12-02 16:27:47,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:27:47,096 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:27:47,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:27:47,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:27:47,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,111 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,127 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-12-02 16:27:47,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:27:47,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:27:47,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:27:47,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:27:47,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,142 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:27:47,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:27:47,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:27:47,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:27:47,148 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:27:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:47,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:27:47,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:27:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:27:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:27:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:27:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:27:47,263 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:27:47,265 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:27:47,349 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:27:47,368 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:27:47,369 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 16:27:47,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:27:47 BoogieIcfgContainer [2023-12-02 16:27:47,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:27:47,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:27:47,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:27:47,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:27:47,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:27:46" (1/3) ... [2023-12-02 16:27:47,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6874baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:27:47, skipping insertion in model container [2023-12-02 16:27:47,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (2/3) ... [2023-12-02 16:27:47,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6874baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:27:47, skipping insertion in model container [2023-12-02 16:27:47,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:27:47" (3/3) ... [2023-12-02 16:27:47,378 INFO L112 eAbstractionObserver]: Analyzing ICFG drift_tenth.c.p+cfa-reducer.c [2023-12-02 16:27:47,394 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:27:47,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:27:47,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:27:47,441 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30679914, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:27:47,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:27:47,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 16:27:47,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:47,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 16:27:47,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:47,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:47,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1497591, now seen corresponding path program 1 times [2023-12-02 16:27:47,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:47,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542160210] [2023-12-02 16:27:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:47,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:47,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:47,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542160210] [2023-12-02 16:27:47,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542160210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:27:47,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:27:47,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:27:47,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509552133] [2023-12-02 16:27:47,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:27:47,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:27:47,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:47,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:27:47,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:27:47,645 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:47,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:47,667 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2023-12-02 16:27:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:27:47,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 16:27:47,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:47,674 INFO L225 Difference]: With dead ends: 13 [2023-12-02 16:27:47,675 INFO L226 Difference]: Without dead ends: 6 [2023-12-02 16:27:47,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:27:47,680 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:47,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:27:47,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2023-12-02 16:27:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-12-02 16:27:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2023-12-02 16:27:47,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2023-12-02 16:27:47,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:47,704 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2023-12-02 16:27:47,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2023-12-02 16:27:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 16:27:47,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:47,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 16:27:47,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:27:47,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:47,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash 46362837, now seen corresponding path program 1 times [2023-12-02 16:27:47,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:47,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308561413] [2023-12-02 16:27:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:47,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:47,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:47,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308561413] [2023-12-02 16:27:47,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308561413] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:47,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502345280] [2023-12-02 16:27:47,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:47,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:47,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:47,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:47,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:27:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:47,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:27:47,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:47,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:47,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502345280] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:47,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1379059983] [2023-12-02 16:27:47,944 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2023-12-02 16:27:47,944 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:27:47,948 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:27:47,954 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:27:47,955 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:27:48,175 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:27:48,237 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '62#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0) (<= 10 |ULTIMATE.start_main_~main__i~0#1|) (= |ULTIMATE.start_main_~main__tick~0#1| (/ 2500000037252903.0 25000000000000000.0)) (= |ULTIMATE.start_main_~__tmp_1~0#1| 0) (= ~__return_main~0 0))' at error location [2023-12-02 16:27:48,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:27:48,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:27:48,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-02 16:27:48,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778913313] [2023-12-02 16:27:48,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:27:48,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:27:48,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:48,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:27:48,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:27:48,241 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:48,254 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2023-12-02 16:27:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:27:48,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 16:27:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:48,255 INFO L225 Difference]: With dead ends: 12 [2023-12-02 16:27:48,255 INFO L226 Difference]: Without dead ends: 9 [2023-12-02 16:27:48,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:27:48,257 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:48,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:27:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-02 16:27:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-12-02 16:27:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:48,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-12-02 16:27:48,262 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-12-02 16:27:48,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:48,262 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-12-02 16:27:48,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-12-02 16:27:48,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 16:27:48,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:48,263 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2023-12-02 16:27:48,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:27:48,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:48,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:48,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:48,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1846238857, now seen corresponding path program 2 times [2023-12-02 16:27:48,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:48,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787450829] [2023-12-02 16:27:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:48,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:48,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:48,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787450829] [2023-12-02 16:27:48,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787450829] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:48,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284391251] [2023-12-02 16:27:48,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:27:48,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:48,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:48,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:48,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:27:48,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 16:27:48,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:48,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:27:48,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:48,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:48,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284391251] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:48,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1159047671] [2023-12-02 16:27:48,707 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2023-12-02 16:27:48,707 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:27:48,707 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:27:48,707 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:27:48,707 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:27:48,818 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:27:48,876 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '140#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0) (<= 10 |ULTIMATE.start_main_~main__i~0#1|) (= |ULTIMATE.start_main_~main__tick~0#1| (/ 2500000037252903.0 25000000000000000.0)) (= |ULTIMATE.start_main_~__tmp_1~0#1| 0) (= ~__return_main~0 0))' at error location [2023-12-02 16:27:48,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:27:48,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:27:48,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-12-02 16:27:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508558229] [2023-12-02 16:27:48,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:27:48,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:27:48,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:48,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:27:48,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:27:48,879 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:48,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:48,906 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2023-12-02 16:27:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 16:27:48,907 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 16:27:48,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:48,908 INFO L225 Difference]: With dead ends: 18 [2023-12-02 16:27:48,908 INFO L226 Difference]: Without dead ends: 15 [2023-12-02 16:27:48,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:27:48,910 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:48,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:27:48,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-02 16:27:48,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-02 16:27:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-12-02 16:27:48,914 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2023-12-02 16:27:48,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:48,914 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-12-02 16:27:48,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-12-02 16:27:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 16:27:48,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:48,915 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2023-12-02 16:27:48,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 16:27:49,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:49,119 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:49,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:49,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1249756343, now seen corresponding path program 3 times [2023-12-02 16:27:49,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:49,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220809061] [2023-12-02 16:27:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:49,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:27:49,137 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:27:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:27:49,164 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 16:27:49,164 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:27:49,165 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 16:27:49,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:27:49,169 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-12-02 16:27:49,172 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:27:49,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:27:49 BoogieIcfgContainer [2023-12-02 16:27:49,191 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:27:49,192 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:27:49,192 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:27:49,192 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:27:49,192 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:27:47" (3/4) ... [2023-12-02 16:27:49,194 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 16:27:49,195 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:27:49,195 INFO L158 Benchmark]: Toolchain (without parser) took 2320.09ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 108.3MB in the beginning and 76.8MB in the end (delta: 31.5MB). Peak memory consumption was 84.5MB. Max. memory is 16.1GB. [2023-12-02 16:27:49,196 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:27:49,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.16ms. Allocated memory is still 155.2MB. Free memory was 108.3MB in the beginning and 98.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 16:27:49,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.93ms. Allocated memory is still 155.2MB. Free memory was 97.8MB in the beginning and 96.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:27:49,197 INFO L158 Benchmark]: Boogie Preprocessor took 18.47ms. Allocated memory is still 155.2MB. Free memory was 96.7MB in the beginning and 95.7MB in the end (delta: 926.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:27:49,197 INFO L158 Benchmark]: RCFGBuilder took 223.20ms. Allocated memory is still 155.2MB. Free memory was 95.7MB in the beginning and 85.8MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 16:27:49,198 INFO L158 Benchmark]: TraceAbstraction took 1818.41ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 84.7MB in the beginning and 76.8MB in the end (delta: 7.9MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2023-12-02 16:27:49,198 INFO L158 Benchmark]: Witness Printer took 3.26ms. Allocated memory is still 207.6MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:27:49,200 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.16ms. Allocated memory is still 155.2MB. Free memory was 108.3MB in the beginning and 98.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.93ms. Allocated memory is still 155.2MB. Free memory was 97.8MB in the beginning and 96.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.47ms. Allocated memory is still 155.2MB. Free memory was 96.7MB in the beginning and 95.7MB in the end (delta: 926.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 223.20ms. Allocated memory is still 155.2MB. Free memory was 95.7MB in the beginning and 85.8MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1818.41ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 84.7MB in the beginning and 76.8MB in the end (delta: 7.9MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. * Witness Printer took 3.26ms. Allocated memory is still 207.6MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 29]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 16. Possible FailurePath: [L1] int __return_main; [L9] float main__tick = 0.10000000149011612; [L10] float main__time = 0.0; [L11] int main__i; [L12] main__i = 0 VAL [__return_main=0, main__i=0, main__tick=2500000037252903/25000000000000000, main__time=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=1, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=2, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=3, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=4, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=5, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=6, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=7, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=8, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=9, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=10, main__tick=2500000037252903/25000000000000000] [L14] COND FALSE !(main__i < 10) [L23] int __tmp_1; [L24] __tmp_1 = main__time != 1.0 [L25] int __VERIFIER_assert__cond; [L26] __VERIFIER_assert__cond = __tmp_1 VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__i=10, main__tick=2500000037252903/25000000000000000] [L27] COND TRUE __VERIFIER_assert__cond == 0 VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__i=10, main__tick=2500000037252903/25000000000000000] [L29] reach_error() VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__i=10, main__tick=2500000037252903/25000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 10 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, InterpolantAutomatonStates: 21, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 0 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 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 [2023-12-02 16:27:49,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 ee159be1ed42c29b70080447b490f7a1aeb72331afc90e5794e0e8d61cb20d74 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:27:51,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:27:51,173 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 16:27:51,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:27:51,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:27:51,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:27:51,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:27:51,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:27:51,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:27:51,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:27:51,209 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:27:51,209 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:27:51,210 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:27:51,210 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:27:51,211 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:27:51,211 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:27:51,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:27:51,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:27:51,213 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:27:51,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:27:51,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:27:51,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:27:51,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:27:51,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:27:51,217 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:27:51,217 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:27:51,218 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:27:51,218 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:27:51,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:27:51,219 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:27:51,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:27:51,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:27:51,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:27:51,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:27:51,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:27:51,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:27:51,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:27:51,221 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:27:51,222 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:27:51,222 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:27:51,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:27:51,222 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:27:51,223 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:27:51,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:27:51,223 INFO L153 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_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee159be1ed42c29b70080447b490f7a1aeb72331afc90e5794e0e8d61cb20d74 [2023-12-02 16:27:51,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:27:51,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:27:51,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:27:51,504 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:27:51,505 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:27:51,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c [2023-12-02 16:27:54,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:27:54,478 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:27:54,479 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c [2023-12-02 16:27:54,486 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/data/20de3e2ce/85053953f657476cb6edaff41578d52b/FLAG839f5d7de [2023-12-02 16:27:54,501 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/data/20de3e2ce/85053953f657476cb6edaff41578d52b [2023-12-02 16:27:54,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:27:54,505 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:27:54,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:27:54,506 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:27:54,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:27:54,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae84563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54, skipping insertion in model container [2023-12-02 16:27:54,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,534 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:27:54,692 WARN L240 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_a9250139-eca2-4943-9637-48967fab204d/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2023-12-02 16:27:54,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:27:54,713 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:27:54,728 WARN L240 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_a9250139-eca2-4943-9637-48967fab204d/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2023-12-02 16:27:54,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:27:54,745 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:27:54,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54 WrapperNode [2023-12-02 16:27:54,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:27:54,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:27:54,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:27:54,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:27:54,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,780 INFO L138 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2023-12-02 16:27:54,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:27:54,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:27:54,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:27:54,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:27:54,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,805 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:27:54,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:27:54,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:27:54,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:27:54,810 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54" (1/1) ... [2023-12-02 16:27:54,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:27:54,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:54,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:27:54,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:27:54,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:27:54,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:27:54,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:27:54,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:27:54,952 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:27:54,954 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:27:55,146 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:27:55,172 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:27:55,173 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 16:27:55,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:27:55 BoogieIcfgContainer [2023-12-02 16:27:55,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:27:55,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:27:55,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:27:55,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:27:55,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:27:54" (1/3) ... [2023-12-02 16:27:55,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339ed91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:27:55, skipping insertion in model container [2023-12-02 16:27:55,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:54" (2/3) ... [2023-12-02 16:27:55,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339ed91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:27:55, skipping insertion in model container [2023-12-02 16:27:55,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:27:55" (3/3) ... [2023-12-02 16:27:55,194 INFO L112 eAbstractionObserver]: Analyzing ICFG drift_tenth.c.p+cfa-reducer.c [2023-12-02 16:27:55,213 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:27:55,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:27:55,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:27:55,281 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@281c517a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:27:55,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:27:55,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 16:27:55,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:55,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 16:27:55,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:55,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1497591, now seen corresponding path program 1 times [2023-12-02 16:27:55,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:27:55,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598913834] [2023-12-02 16:27:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:55,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:55,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:27:55,316 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:27:55,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 16:27:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:55,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:27:55,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:55,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:27:55,448 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:27:55,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598913834] [2023-12-02 16:27:55,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598913834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:27:55,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:27:55,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:27:55,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814161758] [2023-12-02 16:27:55,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:27:55,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:27:55,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:27:55,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:27:55,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:27:55,486 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:55,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:55,689 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2023-12-02 16:27:55,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:27:55,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 16:27:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:55,698 INFO L225 Difference]: With dead ends: 13 [2023-12-02 16:27:55,699 INFO L226 Difference]: Without dead ends: 6 [2023-12-02 16:27:55,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:27:55,705 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:55,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:27:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2023-12-02 16:27:55,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-12-02 16:27:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:55,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2023-12-02 16:27:55,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2023-12-02 16:27:55,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:55,734 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2023-12-02 16:27:55,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:55,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2023-12-02 16:27:55,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 16:27:55,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:55,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 16:27:55,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:27:55,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:55,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:55,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:55,936 INFO L85 PathProgramCache]: Analyzing trace with hash 46362837, now seen corresponding path program 1 times [2023-12-02 16:27:55,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:27:55,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053130476] [2023-12-02 16:27:55,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:55,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:55,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:27:55,938 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:27:55,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 16:27:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:56,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:27:56,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:56,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:56,078 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:27:56,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053130476] [2023-12-02 16:27:56,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053130476] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:56,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [309682330] [2023-12-02 16:27:56,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:56,080 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:27:56,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:27:56,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:27:56,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 16:27:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:56,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:27:56,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:56,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:56,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [309682330] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:56,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630488808] [2023-12-02 16:27:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:56,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:56,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:56,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:56,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 16:27:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:56,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:27:56,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:56,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:56,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630488808] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:56,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:27:56,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 5 [2023-12-02 16:27:56,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064503549] [2023-12-02 16:27:56,392 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:27:56,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:27:56,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:27:56,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:27:56,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:27:56,394 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:56,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:56,657 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2023-12-02 16:27:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:27:56,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 16:27:56,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:56,661 INFO L225 Difference]: With dead ends: 12 [2023-12-02 16:27:56,661 INFO L226 Difference]: Without dead ends: 9 [2023-12-02 16:27:56,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:27:56,663 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:56,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:27:56,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-02 16:27:56,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-12-02 16:27:56,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-12-02 16:27:56,669 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-12-02 16:27:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:56,669 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-12-02 16:27:56,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-12-02 16:27:56,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 16:27:56,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:56,670 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2023-12-02 16:27:56,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 16:27:56,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-02 16:27:57,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 16:27:57,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:57,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:57,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1846238857, now seen corresponding path program 2 times [2023-12-02 16:27:57,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:27:57,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677410528] [2023-12-02 16:27:57,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:27:57,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:57,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:27:57,274 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:27:57,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 16:27:57,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:27:57,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:57,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 16:27:57,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:28:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:28:03,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:28:41,324 WARN L876 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2023-12-02 16:28:47,383 WARN L854 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2023-12-02 16:28:49,402 WARN L876 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2023-12-02 16:28:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 7 not checked. [2023-12-02 16:28:49,403 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:28:49,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677410528] [2023-12-02 16:28:49,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677410528] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:28:49,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2071718671] [2023-12-02 16:28:49,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:28:49,403 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:28:49,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:28:49,404 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:28:49,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-02 16:28:49,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:28:49,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:28:49,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 16:28:49,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:28:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:28:50,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:29:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 7 not checked. [2023-12-02 16:29:01,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2071718671] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:29:01,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882246721] [2023-12-02 16:29:01,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:29:01,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:29:01,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:29:01,357 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:29:01,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 16:29:01,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:29:01,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:29:01,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:29:01,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:29:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:29:12,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:29:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:29:24,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882246721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:29:24,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:29:24,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 6, 6] total 23 [2023-12-02 16:29:24,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540709190] [2023-12-02 16:29:24,232 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:29:24,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 16:29:24,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:29:24,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 16:29:24,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=380, Unknown=6, NotChecked=82, Total=552 [2023-12-02 16:29:24,235 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:29:47,429 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) (= (_ bv4 32) |c_ULTIMATE.start_main_~main__i~0#1|) (= (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) .cse2) .cse2) .cse2) .cse2)) |c_ULTIMATE.start_main_~main__time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~main__tick~0#1|)) .cse1)))) is different from true [2023-12-02 16:30:07,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:30:09,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:30:16,198 WARN L539 Checker$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 [] [2023-12-02 16:30:21,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:30:23,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:30:25,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:30:27,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:30:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:30:28,087 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2023-12-02 16:30:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:30:28,087 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 16:30:28,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:30:28,088 INFO L225 Difference]: With dead ends: 17 [2023-12-02 16:30:28,088 INFO L226 Difference]: Without dead ends: 14 [2023-12-02 16:30:28,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 111.2s TimeCoverageRelationStatistics Valid=172, Invalid=644, Unknown=8, NotChecked=168, Total=992 [2023-12-02 16:30:28,090 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:30:28,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 5 Unknown, 41 Unchecked, 16.5s Time] [2023-12-02 16:30:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-02 16:30:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-02 16:30:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:30:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-02 16:30:28,093 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2023-12-02 16:30:28,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:30:28,094 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-12-02 16:30:28,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:30:28,094 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-02 16:30:28,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 16:30:28,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:30:28,095 INFO L195 NwaCegarLoop]: trace histogram [9, 1, 1, 1, 1] [2023-12-02 16:30:28,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-02 16:30:28,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 16:30:28,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 16:30:28,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:30:28,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:30:28,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:30:28,697 INFO L85 PathProgramCache]: Analyzing trace with hash 733053397, now seen corresponding path program 3 times [2023-12-02 16:30:28,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:30:28,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641292805] [2023-12-02 16:30:28,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:30:28,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:30:28,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:30:28,699 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:30:28,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 16:30:28,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 16:30:28,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:30:28,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 16:30:29,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:32:09,289 WARN L293 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:32:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 34 refuted. 11 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:32:56,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:32,845 WARN L876 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2023-12-02 16:36:40,296 WARN L876 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2023-12-02 16:36:46,441 WARN L854 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2023-12-02 16:36:48,476 WARN L876 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2023-12-02 16:36:54,603 WARN L854 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2023-12-02 16:37:01,348 WARN L854 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2023-12-02 16:37:03,404 WARN L876 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2023-12-02 16:37:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 8 times theorem prover too weak. 0 trivial. 35 not checked. [2023-12-02 16:37:03,405 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:37:03,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641292805] [2023-12-02 16:37:03,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641292805] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:37:03,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [504020358] [2023-12-02 16:37:03,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:37:03,407 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:37:03,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:37:03,410 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:37:03,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 16:37:04,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 16:37:04,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:37:04,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 16:37:04,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:37:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 34 refuted. 11 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:27,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:37:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 8 times theorem prover too weak. 0 trivial. 35 not checked. [2023-12-02 16:37:54,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [504020358] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:37:54,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675592683] [2023-12-02 16:37:54,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:37:54,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:37:54,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:37:54,110 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:37:54,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9250139-eca2-4943-9637-48967fab204d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 16:37:57,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 16:37:57,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:37:57,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 16:37:57,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:40:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:40:07,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:42:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:42:10,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675592683] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:42:10,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:42:10,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 11, 11] total 43 [2023-12-02 16:42:10,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418961435] [2023-12-02 16:42:10,762 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:42:10,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-02 16:42:10,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:10,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-02 16:42:10,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1192, Unknown=101, NotChecked=390, Total=1892 [2023-12-02 16:42:10,766 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 44 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:42:12,894 WARN L854 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__time~0#1|) (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= |c_ULTIMATE.start_main_~main__i~0#1| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-12-02 16:42:14,959 WARN L876 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__time~0#1|) (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= |c_ULTIMATE.start_main_~main__i~0#1| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-12-02 16:42:17,019 WARN L854 $PredicateComparison]: unable to prove that (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (= (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__time~0#1|) (= |c_ULTIMATE.start_main_~main__i~0#1| (_ bv1 32)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-12-02 16:42:19,074 WARN L876 $PredicateComparison]: unable to prove that (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (= (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__time~0#1|) (= |c_ULTIMATE.start_main_~main__i~0#1| (_ bv1 32)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-12-02 16:42:21,117 WARN L854 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (_ bv2 32) |c_ULTIMATE.start_main_~main__i~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-12-02 16:42:23,167 WARN L876 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (_ bv2 32) |c_ULTIMATE.start_main_~main__i~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-12-02 16:42:25,226 WARN L854 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (_ bv3 32) |c_ULTIMATE.start_main_~main__i~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-12-02 16:42:27,271 WARN L876 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (_ bv3 32) |c_ULTIMATE.start_main_~main__i~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-12-02 16:42:30,965 WARN L876 $PredicateComparison]: unable to prove that (and (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__time~0#1|) (= (_ bv4 32) |c_ULTIMATE.start_main_~main__i~0#1|) (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-12-02 16:42:33,026 WARN L854 $PredicateComparison]: unable to prove that (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__time~0#1|) (= |c_ULTIMATE.start_main_~main__i~0#1| (_ bv5 32)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-12-02 16:42:35,056 WARN L876 $PredicateComparison]: unable to prove that (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__time~0#1|) (= |c_ULTIMATE.start_main_~main__i~0#1| (_ bv5 32)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-12-02 16:42:37,111 WARN L854 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (_ bv6 32) |c_ULTIMATE.start_main_~main__i~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-12-02 16:42:39,141 WARN L876 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (_ bv6 32) |c_ULTIMATE.start_main_~main__i~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-12-02 16:42:41,188 WARN L854 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__tick~0#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__time~0#1|) (= |c_ULTIMATE.start_main_~main__i~0#1| (_ bv7 32)) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|) |c_ULTIMATE.start_main_~main__tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from false [2023-12-02 16:43:04,740 WARN L293 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:43:06,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:43:08,210 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|))) (let ((.cse4 (fp.add c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~main__tick~0#1|))) (let ((.cse0 (fp.add c_currentRoundingMode .cse4 |c_ULTIMATE.start_main_~main__tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~main__tick~0#1|)) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) (= |c_ULTIMATE.start_main_~main__i~0#1| (_ bv9 32)) (= |c_ULTIMATE.start_main_~main__time~0#1| (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) .cse3) .cse3) .cse3) .cse3) .cse3) .cse3) .cse3) .cse3) .cse3))) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse4) .cse1)))))) is different from false [2023-12-02 16:43:10,265 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__time~0#1| |c_ULTIMATE.start_main_~main__tick~0#1|))) (let ((.cse4 (fp.add c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~main__tick~0#1|))) (let ((.cse0 (fp.add c_currentRoundingMode .cse4 |c_ULTIMATE.start_main_~main__tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~main__tick~0#1|)) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) (= |c_ULTIMATE.start_main_~main__i~0#1| (_ bv9 32)) (= |c_ULTIMATE.start_main_~main__time~0#1| (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) .cse3) .cse3) .cse3) .cse3) .cse3) .cse3) .cse3) .cse3) .cse3))) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse4) .cse1)))))) is different from true