./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/drift_tenth.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/drift_tenth.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:39:49,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:39:49,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:39:49,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:39:49,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:39:49,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:39:49,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:39:49,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:39:49,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:39:49,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:39:49,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:39:49,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:39:49,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:39:49,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:39:49,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:39:49,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:39:49,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:39:49,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:39:49,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:39:49,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:39:49,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:39:49,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:39:49,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:39:49,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:39:49,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:39:49,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:39:49,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:39:49,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:39:49,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:39:49,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:39:49,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:39:49,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:39:49,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:39:49,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:39:49,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:39:49,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:39:49,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:39:49,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:39:49,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:39:49,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:39:49,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:39:49,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:39:50,011 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:39:50,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:39:50,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:39:50,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:39:50,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:39:50,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:39:50,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:39:50,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:39:50,015 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:39:50,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:39:50,017 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:39:50,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:39:50,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:39:50,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:39:50,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:39:50,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:39:50,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:39:50,019 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:39:50,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:39:50,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:39:50,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:39:50,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:39:50,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:39:50,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:39:50,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:39:50,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:39:50,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:39:50,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:39:50,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:39:50,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:39:50,023 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:39:50,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:39:50,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:39:50,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:39:50,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 [2021-11-13 18:39:50,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:39:50,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:39:50,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:39:50,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:39:50,432 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:39:50,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/float-benchs/drift_tenth.c [2021-11-13 18:39:50,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/data/8e2fbc3f5/e1ea6296c82449bc9028a635c8ce4642/FLAG226e94959 [2021-11-13 18:39:51,043 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:39:51,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/sv-benchmarks/c/float-benchs/drift_tenth.c [2021-11-13 18:39:51,057 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/data/8e2fbc3f5/e1ea6296c82449bc9028a635c8ce4642/FLAG226e94959 [2021-11-13 18:39:51,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/data/8e2fbc3f5/e1ea6296c82449bc9028a635c8ce4642 [2021-11-13 18:39:51,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:39:51,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:39:51,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:39:51,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:39:51,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:39:51,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:39:51" (1/1) ... [2021-11-13 18:39:51,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa76d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51, skipping insertion in model container [2021-11-13 18:39:51,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:39:51" (1/1) ... [2021-11-13 18:39:51,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:39:51,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:39:51,686 WARN L228 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_52d5101c-3cb6-492f-987b-fe4cf158c9ac/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2021-11-13 18:39:51,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:39:51,714 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:39:51,727 WARN L228 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_52d5101c-3cb6-492f-987b-fe4cf158c9ac/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2021-11-13 18:39:51,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:39:51,747 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:39:51,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51 WrapperNode [2021-11-13 18:39:51,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:39:51,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:39:51,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:39:51,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:39:51,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51" (1/1) ... [2021-11-13 18:39:51,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51" (1/1) ... [2021-11-13 18:39:51,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:39:51,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:39:51,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:39:51,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:39:51,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51" (1/1) ... [2021-11-13 18:39:51,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51" (1/1) ... [2021-11-13 18:39:51,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51" (1/1) ... [2021-11-13 18:39:51,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51" (1/1) ... [2021-11-13 18:39:51,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51" (1/1) ... [2021-11-13 18:39:51,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51" (1/1) ... [2021-11-13 18:39:51,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51" (1/1) ... [2021-11-13 18:39:51,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:39:51,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:39:51,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:39:51,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:39:51,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51" (1/1) ... [2021-11-13 18:39:51,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:39:51,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:39:51,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:39:51,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:39:51,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:39:51,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:39:51,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:39:51,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:39:52,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:39:52,268 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:39:52,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:39:52 BoogieIcfgContainer [2021-11-13 18:39:52,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:39:52,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:39:52,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:39:52,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:39:52,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:39:51" (1/3) ... [2021-11-13 18:39:52,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392369c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:39:52, skipping insertion in model container [2021-11-13 18:39:52,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:51" (2/3) ... [2021-11-13 18:39:52,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392369c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:39:52, skipping insertion in model container [2021-11-13 18:39:52,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:39:52" (3/3) ... [2021-11-13 18:39:52,291 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2021-11-13 18:39:52,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:39:52,301 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:39:52,376 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:39:52,391 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:39:52,391 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:39:52,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) 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) [2021-11-13 18:39:52,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 18:39:52,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:52,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 18:39:52,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:39:52,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:52,453 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-11-13 18:39:52,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:39:52,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127829004] [2021-11-13 18:39:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:52,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:39:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:52,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:39:52,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127829004] [2021-11-13 18:39:52,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127829004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:52,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:52,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:39:52,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7616050] [2021-11-13 18:39:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:52,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:39:52,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:39:52,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:39:52,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:39:52,849 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-11-13 18:39:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:52,888 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-11-13 18:39:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:39:52,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) Word has length 6 [2021-11-13 18:39:52,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:52,902 INFO L225 Difference]: With dead ends: 22 [2021-11-13 18:39:52,907 INFO L226 Difference]: Without dead ends: 10 [2021-11-13 18:39:52,911 INFO L932 BasicCegarLoop]: 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 [2021-11-13 18:39:52,926 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.48ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:52,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 8.48ms Time] [2021-11-13 18:39:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-13 18:39:52,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-11-13 18:39:52,977 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) [2021-11-13 18:39:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-13 18:39:52,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-13 18:39:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:52,982 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-13 18:39:52,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-11-13 18:39:52,984 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-13 18:39:52,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 18:39:52,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:52,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:39:52,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:39:52,987 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:39:52,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:52,993 INFO L85 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2021-11-13 18:39:52,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:39:52,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261735110] [2021-11-13 18:39:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:52,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:39:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:53,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:39:53,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261735110] [2021-11-13 18:39:53,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261735110] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:39:53,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463104482] [2021-11-13 18:39:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:53,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:39:53,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:39:53,135 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:39:53,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:39:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:53,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:39:53,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:53,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:53,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463104482] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:39:53,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:39:53,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-13 18:39:53,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10498323] [2021-11-13 18:39:53,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:39:53,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:39:53,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:39:53,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:39:53,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:39:53,389 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2021-11-13 18:39:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:53,420 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-13 18:39:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:39:53,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) Word has length 8 [2021-11-13 18:39:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:53,422 INFO L225 Difference]: With dead ends: 19 [2021-11-13 18:39:53,422 INFO L226 Difference]: Without dead ends: 15 [2021-11-13 18:39:53,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:39:53,425 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.05ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.31ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:53,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 18 Unknown, 0 Unchecked, 1.05ms Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 21.31ms Time] [2021-11-13 18:39:53,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-13 18:39:53,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-13 18:39:53,431 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) [2021-11-13 18:39:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-13 18:39:53,432 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-13 18:39:53,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:53,433 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-13 18:39:53,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2021-11-13 18:39:53,434 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-13 18:39:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-13 18:39:53,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:53,435 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2021-11-13 18:39:53,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:53,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-13 18:39:53,654 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:39:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:53,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 2 times [2021-11-13 18:39:53,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:39:53,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713322139] [2021-11-13 18:39:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:53,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:39:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:53,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:39:53,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713322139] [2021-11-13 18:39:53,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713322139] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:39:53,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100921913] [2021-11-13 18:39:53,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:39:53,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:39:53,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:39:53,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:39:53,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:39:53,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:39:53,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:39:53,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:39:53,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:53,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:54,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100921913] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:39:54,097 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:39:54,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-13 18:39:54,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015332462] [2021-11-13 18:39:54,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:39:54,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 18:39:54,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:39:54,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 18:39:54,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:39:54,101 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) [2021-11-13 18:39:54,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:54,157 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-11-13 18:39:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:39:54,157 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-13 18:39:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:54,159 INFO L225 Difference]: With dead ends: 31 [2021-11-13 18:39:54,159 INFO L226 Difference]: Without dead ends: 27 [2021-11-13 18:39:54,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:39:54,162 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.74ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:54,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 35 Unknown, 0 Unchecked, 1.74ms Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 39.93ms Time] [2021-11-13 18:39:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-13 18:39:54,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-13 18:39:54,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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) [2021-11-13 18:39:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-11-13 18:39:54,170 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2021-11-13 18:39:54,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:54,171 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-11-13 18:39:54,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) [2021-11-13 18:39:54,172 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-11-13 18:39:54,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 18:39:54,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:54,173 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2021-11-13 18:39:54,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:54,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:39:54,402 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:39:54,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:54,402 INFO L85 PathProgramCache]: Analyzing trace with hash -95702975, now seen corresponding path program 3 times [2021-11-13 18:39:54,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:39:54,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141738317] [2021-11-13 18:39:54,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:54,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:39:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:39:54,442 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:39:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:39:54,538 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:39:54,539 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:39:54,540 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:39:54,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:39:54,550 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1] [2021-11-13 18:39:54,554 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:39:54,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:39:54 BoogieIcfgContainer [2021-11-13 18:39:54,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 18:39:54,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:39:54,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:39:54,647 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:39:54,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:39:52" (3/4) ... [2021-11-13 18:39:54,652 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 18:39:54,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:39:54,654 INFO L158 Benchmark]: Toolchain (without parser) took 3249.03ms. Allocated memory is still 127.9MB. Free memory was 92.1MB in the beginning and 85.8MB in the end (delta: 6.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 18:39:54,654 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory is still 108.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:39:54,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.76ms. Allocated memory is still 127.9MB. Free memory was 92.0MB in the beginning and 103.6MB in the end (delta: -11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:39:54,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.46ms. Allocated memory is still 127.9MB. Free memory was 103.6MB in the beginning and 101.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:39:54,660 INFO L158 Benchmark]: Boogie Preprocessor took 27.15ms. Allocated memory is still 127.9MB. Free memory was 101.9MB in the beginning and 101.0MB in the end (delta: 910.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:39:54,661 INFO L158 Benchmark]: RCFGBuilder took 450.88ms. Allocated memory is still 127.9MB. Free memory was 101.0MB in the beginning and 91.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:39:54,661 INFO L158 Benchmark]: TraceAbstraction took 2371.20ms. Allocated memory is still 127.9MB. Free memory was 91.0MB in the beginning and 86.4MB in the end (delta: 4.6MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2021-11-13 18:39:54,662 INFO L158 Benchmark]: Witness Printer took 6.25ms. Allocated memory is still 127.9MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:39:54,668 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory is still 108.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.76ms. Allocated memory is still 127.9MB. Free memory was 92.0MB in the beginning and 103.6MB in the end (delta: -11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.46ms. Allocated memory is still 127.9MB. Free memory was 103.6MB in the beginning and 101.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.15ms. Allocated memory is still 127.9MB. Free memory was 101.9MB in the beginning and 101.0MB in the end (delta: 910.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 450.88ms. Allocated memory is still 127.9MB. Free memory was 101.0MB in the beginning and 91.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2371.20ms. Allocated memory is still 127.9MB. Free memory was 91.0MB in the beginning and 86.4MB in the end (delta: 4.6MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Witness Printer took 6.25ms. Allocated memory is still 127.9MB. Free memory is still 85.8MB. 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: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 15. Possible FailurePath: [L10] float tick = 1.f / 10.f; [L11] float time = 0.f; [L12] int i; [L14] i = 0 VAL [i=0, time=0] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=0] [L14] i++ VAL [i=1] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=1] [L14] i++ VAL [i=2] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=2] [L14] i++ VAL [i=3] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=3] [L14] i++ VAL [i=4] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=4] [L14] i++ VAL [i=5] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=5] [L14] i++ VAL [i=6] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=6] [L14] i++ VAL [i=7] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=7] [L14] i++ VAL [i=8] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=8] [L14] i++ VAL [i=9] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=9] [L14] i++ VAL [i=10] [L14] COND FALSE !(i < 10) VAL [i=10] [L17] CALL __VERIFIER_assert(time != 1.0) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 69.73ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 54.88ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 22 mSDtfsCounter, 45 mSolverCounterSat, 3.63ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-13 18:39:54,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/drift_tenth.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:39:57,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:39:57,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:39:57,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:39:57,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:39:57,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:39:57,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:39:57,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:39:57,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:39:57,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:39:57,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:39:57,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:39:57,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:39:57,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:39:57,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:39:57,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:39:57,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:39:57,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:39:57,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:39:57,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:39:57,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:39:57,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:39:57,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:39:57,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:39:57,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:39:57,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:39:57,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:39:57,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:39:57,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:39:57,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:39:57,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:39:57,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:39:57,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:39:57,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:39:57,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:39:57,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:39:57,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:39:57,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:39:57,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:39:57,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:39:57,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:39:58,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 18:39:58,060 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:39:58,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:39:58,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:39:58,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:39:58,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:39:58,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:39:58,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:39:58,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:39:58,067 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:39:58,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:39:58,069 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:39:58,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:39:58,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:39:58,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:39:58,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:39:58,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:39:58,072 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:39:58,072 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:39:58,072 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:39:58,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:39:58,073 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:39:58,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:39:58,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:39:58,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:39:58,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:39:58,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:39:58,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:39:58,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:39:58,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:39:58,081 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:39:58,081 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:39:58,082 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:39:58,082 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:39:58,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:39:58,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:39:58,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:39:58,084 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 [2021-11-13 18:39:58,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:39:58,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:39:58,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:39:58,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:39:58,609 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:39:58,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/float-benchs/drift_tenth.c [2021-11-13 18:39:58,698 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/data/e4b02a9cd/daf10903a2a24930a6fc81ff431b49c0/FLAGa504cc0cc [2021-11-13 18:39:59,360 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:39:59,362 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/sv-benchmarks/c/float-benchs/drift_tenth.c [2021-11-13 18:39:59,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/data/e4b02a9cd/daf10903a2a24930a6fc81ff431b49c0/FLAGa504cc0cc [2021-11-13 18:39:59,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/data/e4b02a9cd/daf10903a2a24930a6fc81ff431b49c0 [2021-11-13 18:39:59,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:39:59,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:39:59,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:39:59,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:39:59,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:39:59,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:39:59" (1/1) ... [2021-11-13 18:39:59,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca5edba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:39:59, skipping insertion in model container [2021-11-13 18:39:59,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:39:59" (1/1) ... [2021-11-13 18:39:59,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:39:59,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:39:59,983 WARN L228 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_52d5101c-3cb6-492f-987b-fe4cf158c9ac/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2021-11-13 18:40:00,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:40:00,022 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:40:00,043 WARN L228 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_52d5101c-3cb6-492f-987b-fe4cf158c9ac/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2021-11-13 18:40:00,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:40:00,073 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:40:00,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:00 WrapperNode [2021-11-13 18:40:00,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:40:00,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:40:00,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:40:00,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:40:00,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:00" (1/1) ... [2021-11-13 18:40:00,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:00" (1/1) ... [2021-11-13 18:40:00,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:40:00,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:40:00,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:40:00,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:40:00,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:00" (1/1) ... [2021-11-13 18:40:00,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:00" (1/1) ... [2021-11-13 18:40:00,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:00" (1/1) ... [2021-11-13 18:40:00,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:00" (1/1) ... [2021-11-13 18:40:00,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:00" (1/1) ... [2021-11-13 18:40:00,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:00" (1/1) ... [2021-11-13 18:40:00,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:00" (1/1) ... [2021-11-13 18:40:00,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:40:00,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:40:00,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:40:00,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:40:00,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:00" (1/1) ... [2021-11-13 18:40:00,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:40:00,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:40:00,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:40:00,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:40:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:40:00,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:40:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:40:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:40:00,642 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:40:00,642 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:40:00,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:40:00 BoogieIcfgContainer [2021-11-13 18:40:00,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:40:00,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:40:00,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:40:00,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:40:00,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:39:59" (1/3) ... [2021-11-13 18:40:00,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461ccee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:40:00, skipping insertion in model container [2021-11-13 18:40:00,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:00" (2/3) ... [2021-11-13 18:40:00,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461ccee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:40:00, skipping insertion in model container [2021-11-13 18:40:00,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:40:00" (3/3) ... [2021-11-13 18:40:00,654 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2021-11-13 18:40:00,660 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:40:00,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:40:00,722 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:40:00,731 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:40:00,732 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:40:00,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) 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) [2021-11-13 18:40:00,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 18:40:00,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:40:00,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 18:40:00,778 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:40:00,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:40:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-11-13 18:40:00,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:40:00,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425206844] [2021-11-13 18:40:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:40:00,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:40:00,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:40:00,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:40:00,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:40:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:40:00,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:40:00,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:40:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:40:01,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:40:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:40:01,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:40:01,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425206844] [2021-11-13 18:40:01,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425206844] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:40:01,130 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:40:01,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:40:01,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906520075] [2021-11-13 18:40:01,133 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:40:01,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:40:01,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:40:01,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:40:01,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:40:01,195 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-13 18:40:01,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:40:01,581 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2021-11-13 18:40:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:40:01,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 6 [2021-11-13 18:40:01,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:40:01,600 INFO L225 Difference]: With dead ends: 23 [2021-11-13 18:40:01,600 INFO L226 Difference]: Without dead ends: 11 [2021-11-13 18:40:01,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:40:01,612 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 353.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.03ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 363.97ms IncrementalHoareTripleChecker+Time [2021-11-13 18:40:01,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 8 Unknown, 0 Unchecked, 1.03ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 363.97ms Time] [2021-11-13 18:40:01,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-13 18:40:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-13 18:40:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:40:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-11-13 18:40:01,656 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-11-13 18:40:01,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:40:01,657 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-11-13 18:40:01,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-13 18:40:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-11-13 18:40:01,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 18:40:01,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:40:01,659 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-13 18:40:01,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:40:01,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:40:01,874 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:40:01,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:40:01,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1489078833, now seen corresponding path program 1 times [2021-11-13 18:40:01,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:40:01,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946693728] [2021-11-13 18:40:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:40:01,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:40:01,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:40:01,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:40:01,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:40:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:40:02,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:40:02,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:40:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:40:02,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:40:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:40:02,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:40:02,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946693728] [2021-11-13 18:40:02,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946693728] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:40:02,210 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:40:02,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-13 18:40:02,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355130380] [2021-11-13 18:40:02,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:40:02,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:40:02,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:40:02,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:40:02,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:40:02,214 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-13 18:40:02,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:40:02,829 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-13 18:40:02,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:40:02,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-13 18:40:02,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:40:02,834 INFO L225 Difference]: With dead ends: 23 [2021-11-13 18:40:02,834 INFO L226 Difference]: Without dead ends: 19 [2021-11-13 18:40:02,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:40:02,837 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 490.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 527.88ms IncrementalHoareTripleChecker+Time [2021-11-13 18:40:02,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 37 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 527.88ms Time] [2021-11-13 18:40:02,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-13 18:40:02,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-13 18:40:02,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 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) [2021-11-13 18:40:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-13 18:40:02,852 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2021-11-13 18:40:02,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:40:02,853 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-13 18:40:02,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-13 18:40:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-13 18:40:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 18:40:02,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:40:02,865 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1] [2021-11-13 18:40:02,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 18:40:03,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:40:03,080 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:40:03,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:40:03,081 INFO L85 PathProgramCache]: Analyzing trace with hash -690462407, now seen corresponding path program 2 times [2021-11-13 18:40:03,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:40:03,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408926032] [2021-11-13 18:40:03,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:40:03,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:40:03,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:40:03,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:40:03,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:40:03,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:40:03,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:40:03,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 18:40:03,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:40:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 34 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:40:28,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:41:02,408 WARN L860 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-13 18:41:11,116 WARN L838 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-13 18:41:22,167 WARN L838 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-13 18:41:24,192 WARN L860 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-13 18:41:34,637 WARN L860 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-13 18:41:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 30 not checked. [2021-11-13 18:41:36,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:41:36,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408926032] [2021-11-13 18:41:36,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408926032] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:41:36,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:41:36,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-11-13 18:41:36,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459798169] [2021-11-13 18:41:36,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:41:36,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-13 18:41:36,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:41:36,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-13 18:41:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=158, Unknown=6, NotChecked=116, Total=342 [2021-11-13 18:41:36,980 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 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) [2021-11-13 18:41:39,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:41:46,609 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_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 |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-13 18:41:50,695 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~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 |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-13 18:42:03,525 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~tick~0#1|)) .cse2)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse2)))) is different from true [2021-11-13 18:42:15,662 WARN L515 Checker$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 [] [2021-11-13 18:42:28,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:42:30,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:42:32,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:42:34,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:42:37,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:42:46,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:42:48,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:42:49,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:42:51,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:42:55,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:42:55,460 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-11-13 18:42:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:42:55,461 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-13 18:42:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:42:55,462 INFO L225 Difference]: With dead ends: 33 [2021-11-13 18:42:55,462 INFO L226 Difference]: Without dead ends: 25 [2021-11-13 18:42:55,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 101.3s TimeCoverageRelationStatistics Valid=99, Invalid=260, Unknown=11, NotChecked=280, Total=650 [2021-11-13 18:42:55,465 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 12 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27667.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.37ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 28055.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:42:55,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 60 Invalid, 170 Unknown, 0 Unchecked, 3.37ms Time], IncrementalHoareTripleChecker [12 Valid, 58 Invalid, 8 Unknown, 92 Unchecked, 28055.03ms Time] [2021-11-13 18:42:55,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-13 18:42:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-13 18:42:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 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) [2021-11-13 18:42:55,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-11-13 18:42:55,473 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2021-11-13 18:42:55,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:42:55,474 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-11-13 18:42:55,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 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) [2021-11-13 18:42:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-11-13 18:42:55,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:42:55,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:42:55,475 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1] [2021-11-13 18:42:55,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:42:55,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:42:55,676 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:42:55,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:42:55,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2127216959, now seen corresponding path program 3 times [2021-11-13 18:42:55,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:42:55,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367206787] [2021-11-13 18:42:55,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:42:55,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:42:55,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:42:55,680 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:42:55,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:42:56,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-13 18:42:56,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:42:56,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-13 18:42:56,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:43:52,028 WARN L227 SmtUtils]: Spent 6.86s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:44:03,524 WARN L860 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (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 (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-13 18:44:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 17 not checked. [2021-11-13 18:44:09,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:45:08,968 WARN L838 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-13 18:45:10,993 WARN L860 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-13 18:46:01,381 WARN L860 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-13 18:46:10,927 WARN L838 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-13 18:46:12,964 WARN L860 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-13 18:46:21,429 WARN L838 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-13 18:46:23,473 WARN L860 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-13 18:46:33,700 WARN L838 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-13 18:46:35,745 WARN L860 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-13 18:46:41,859 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (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 (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-13 18:46:43,943 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (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 (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-13 18:46:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 4 refuted. 16 times theorem prover too weak. 0 trivial. 61 not checked. [2021-11-13 18:46:43,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:46:43,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367206787] [2021-11-13 18:46:43,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367206787] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:46:43,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:46:43,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-11-13 18:46:43,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619088046] [2021-11-13 18:46:43,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:46:43,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-13 18:46:43,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:46:43,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-13 18:46:43,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=236, Unknown=30, NotChecked=280, Total=650 [2021-11-13 18:46:43,949 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 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) [2021-11-13 18:46:45,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:48,027 WARN L860 $PredicateComparison]: unable to prove that (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (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 (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-13 18:46:50,076 WARN L860 $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 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (_ +zero 8 24) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-13 18:46:52,122 WARN L860 $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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-13 18:46:54,167 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~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_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-13 18:46:56,212 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-13 18:46:58,247 WARN L515 Checker$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 [] [2021-11-13 18:47:09,599 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_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 |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-13 18:47:11,637 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~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 (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_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 |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-13 18:47:15,301 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~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 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_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 |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-13 18:47:18,716 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse3 (fp.add c_currentRoundingMode .cse4 |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse1 (fp.add c_currentRoundingMode .cse3 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~tick~0#1|)) .cse0)) (= (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (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 (_ +zero 8 24) .cse2) .cse2) .cse2) .cse2) .cse2) .cse2) .cse2) .cse2) .cse2)) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse4) .cse0)))))) is different from true [2021-11-13 18:47:20,765 WARN L860 $PredicateComparison]: unable to prove that (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (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 (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-13 18:47:24,156 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~tick~0#1|)) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse0))))) is different from true [2021-11-13 18:47:26,203 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~tick~0#1|)) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)))) is different from false [2021-11-13 18:47:28,231 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~tick~0#1|)) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)))) is different from true [2021-11-13 18:47:30,316 WARN L515 Checker$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 [] [2021-11-13 18:47:32,868 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|)) .cse0)))) is different from true [2021-11-13 18:47:34,883 WARN L515 Checker$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 [] [2021-11-13 18:47:36,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:38,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:40,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:43,113 WARN L515 Checker$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 [] [2021-11-13 18:47:43,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:43,162 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-11-13 18:47:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 18:47:43,163 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 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 24 [2021-11-13 18:47:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:43,165 INFO L225 Difference]: With dead ends: 40 [2021-11-13 18:47:43,165 INFO L226 Difference]: Without dead ends: 35 [2021-11-13 18:47:43,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 20 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 167.4s TimeCoverageRelationStatistics Valid=130, Invalid=248, Unknown=44, NotChecked=1060, Total=1482 [2021-11-13 18:47:43,167 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17797.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.38ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 18069.53ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:43,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 62 Invalid, 216 Unknown, 0 Unchecked, 2.38ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 8 Unknown, 189 Unchecked, 18069.53ms Time] [2021-11-13 18:47:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-13 18:47:43,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-13 18:47:43,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 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) [2021-11-13 18:47:43,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-11-13 18:47:43,178 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 24 [2021-11-13 18:47:43,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:43,179 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-11-13 18:47:43,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 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) [2021-11-13 18:47:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-11-13 18:47:43,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 18:47:43,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:43,182 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:43,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:43,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:43,404 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:43,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1155303607, now seen corresponding path program 4 times [2021-11-13 18:47:43,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:43,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230290250] [2021-11-13 18:47:43,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:47:43,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:43,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:43,406 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:43,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:47:43,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:47:43,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:47:43,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 18:47:43,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 84 proven. 100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 18:47:44,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 84 proven. 100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 18:47:45,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:45,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230290250] [2021-11-13 18:47:45,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230290250] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:47:45,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:47:45,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-13 18:47:45,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649763396] [2021-11-13 18:47:45,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:47:45,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-13 18:47:45,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:45,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-13 18:47:45,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-11-13 18:47:45,498 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 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) [2021-11-13 18:47:47,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:47,303 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-11-13 18:47:47,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:47:47,304 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 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 34 [2021-11-13 18:47:47,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:47,305 INFO L225 Difference]: With dead ends: 35 [2021-11-13 18:47:47,305 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 18:47:47,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-11-13 18:47:47,306 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1620.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1790.62ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:47,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 248 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [10 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1790.62ms Time] [2021-11-13 18:47:47,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 18:47:47,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 18:47:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:47:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 18:47:47,310 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-11-13 18:47:47,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:47,310 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 18:47:47,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 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) [2021-11-13 18:47:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 18:47:47,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 18:47:47,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:47:47,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:47,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d5101c-3cb6-492f-987b-fe4cf158c9ac/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:47,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.