./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound100.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound100.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU --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 918183af41ed822b080517d21adc4e88771d95d1ab967de55d618cd7a5912a2d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:36:45,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:36:45,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:36:45,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:36:45,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:36:45,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:36:45,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:36:45,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:36:45,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:36:45,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:36:45,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:36:45,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:36:45,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:36:45,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:36:45,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:36:45,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:36:45,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:36:45,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:36:45,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:36:45,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:36:45,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:36:45,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:36:45,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:36:45,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:36:45,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:36:45,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:36:45,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:36:45,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:36:45,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:36:45,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:36:45,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:36:45,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:36:45,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:36:45,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:36:45,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:36:45,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:36:45,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:36:45,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:36:45,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:36:45,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:36:45,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:36:45,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:36:45,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:36:45,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:36:45,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:36:45,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:36:45,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:36:45,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:36:45,287 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:36:45,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:36:45,288 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:36:45,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:36:45,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:36:45,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:36:45,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:36:45,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:36:45,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:36:45,290 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:36:45,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:36:45,290 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:36:45,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:36:45,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:36:45,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:36:45,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:36:45,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:36:45,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:36:45,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:36:45,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:36:45,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:36:45,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:36:45,293 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:36:45,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:36:45,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:36:45,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:36:45,294 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_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 918183af41ed822b080517d21adc4e88771d95d1ab967de55d618cd7a5912a2d [2021-11-02 22:36:45,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:36:45,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:36:45,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:36:45,646 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:36:45,647 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:36:45,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound100.i [2021-11-02 22:36:45,732 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/data/f19671b45/d09772bfcf8248a7bb611355c6f9d1a1/FLAGf977264e3 [2021-11-02 22:36:46,277 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:36:46,278 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound100.i [2021-11-02 22:36:46,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/data/f19671b45/d09772bfcf8248a7bb611355c6f9d1a1/FLAGf977264e3 [2021-11-02 22:36:46,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/data/f19671b45/d09772bfcf8248a7bb611355c6f9d1a1 [2021-11-02 22:36:46,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:36:46,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:36:46,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:36:46,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:36:46,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:36:46,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:36:46" (1/1) ... [2021-11-02 22:36:46,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d049f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46, skipping insertion in model container [2021-11-02 22:36:46,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:36:46" (1/1) ... [2021-11-02 22:36:46,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:36:46,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:36:46,873 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_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound100.i[950,963] [2021-11-02 22:36:46,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:36:46,901 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:36:46,915 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_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound100.i[950,963] [2021-11-02 22:36:46,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:36:46,938 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:36:46,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46 WrapperNode [2021-11-02 22:36:46,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:36:46,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:36:46,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:36:46,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:36:46,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46" (1/1) ... [2021-11-02 22:36:46,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46" (1/1) ... [2021-11-02 22:36:46,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:36:46,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:36:46,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:36:46,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:36:46,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46" (1/1) ... [2021-11-02 22:36:46,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46" (1/1) ... [2021-11-02 22:36:46,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46" (1/1) ... [2021-11-02 22:36:46,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46" (1/1) ... [2021-11-02 22:36:47,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46" (1/1) ... [2021-11-02 22:36:47,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46" (1/1) ... [2021-11-02 22:36:47,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46" (1/1) ... [2021-11-02 22:36:47,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:36:47,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:36:47,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:36:47,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:36:47,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46" (1/1) ... [2021-11-02 22:36:47,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:36:47,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:47,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:36:47,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:36:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:36:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:36:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:36:47,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:36:47,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:36:47,387 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-02 22:36:47,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:47 BoogieIcfgContainer [2021-11-02 22:36:47,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:36:47,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:36:47,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:36:47,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:36:47,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:36:46" (1/3) ... [2021-11-02 22:36:47,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd44350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:36:47, skipping insertion in model container [2021-11-02 22:36:47,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:46" (2/3) ... [2021-11-02 22:36:47,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd44350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:36:47, skipping insertion in model container [2021-11-02 22:36:47,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:47" (3/3) ... [2021-11-02 22:36:47,403 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound100.i [2021-11-02 22:36:47,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:36:47,410 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-02 22:36:47,477 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:36:47,494 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 [2021-11-02 22:36:47,495 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-02 22:36:47,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 25 states have internal predecessors, (38), 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) [2021-11-02 22:36:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 22:36:47,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:47,529 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:47,530 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:47,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:47,537 INFO L85 PathProgramCache]: Analyzing trace with hash -174569337, now seen corresponding path program 1 times [2021-11-02 22:36:47,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:47,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054574414] [2021-11-02 22:36:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:47,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:47,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:47,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054574414] [2021-11-02 22:36:47,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054574414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:47,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:47,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:36:47,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171330835] [2021-11-02 22:36:47,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:36:47,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:47,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:36:47,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:36:47,794 INFO L87 Difference]: Start difference. First operand has 26 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2021-11-02 22:36:47,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:47,818 INFO L93 Difference]: Finished difference Result 49 states and 72 transitions. [2021-11-02 22:36:47,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:36:47,820 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-02 22:36:47,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:47,834 INFO L225 Difference]: With dead ends: 49 [2021-11-02 22:36:47,834 INFO L226 Difference]: Without dead ends: 22 [2021-11-02 22:36:47,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:36:47,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-02 22:36:47,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-02 22:36:47,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 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) [2021-11-02 22:36:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-02 22:36:47,881 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2021-11-02 22:36:47,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:47,883 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-02 22:36:47,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2021-11-02 22:36:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-02 22:36:47,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:36:47,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:47,885 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:47,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:36:47,887 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:47,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:47,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1454099019, now seen corresponding path program 1 times [2021-11-02 22:36:47,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:47,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356850831] [2021-11-02 22:36:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:47,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:47,960 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:36:47,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808316422] [2021-11-02 22:36:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:47,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:47,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:47,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:36:47,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:36:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:48,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:36:48,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:36:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:48,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:48,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356850831] [2021-11-02 22:36:48,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:36:48,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808316422] [2021-11-02 22:36:48,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808316422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:48,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:48,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:36:48,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039966364] [2021-11-02 22:36:48,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:36:48,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:48,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:36:48,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:36:48,567 INFO L87 Difference]: Start difference. First operand 22 states and 24 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) [2021-11-02 22:36:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:50,968 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-11-02 22:36:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:36:50,969 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 15 [2021-11-02 22:36:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:50,970 INFO L225 Difference]: With dead ends: 36 [2021-11-02 22:36:50,971 INFO L226 Difference]: Without dead ends: 30 [2021-11-02 22:36:50,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:36:50,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-02 22:36:50,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-11-02 22:36:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 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) [2021-11-02 22:36:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-11-02 22:36:50,980 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2021-11-02 22:36:50,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:50,980 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-02 22:36:50,981 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) [2021-11-02 22:36:50,981 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-11-02 22:36:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:36:50,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:50,982 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:51,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 22:36:51,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:51,196 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:51,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1566788422, now seen corresponding path program 1 times [2021-11-02 22:36:51,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:51,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184005069] [2021-11-02 22:36:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:51,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:51,230 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:36:51,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302649225] [2021-11-02 22:36:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:51,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:51,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:51,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:36:51,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:36:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:51,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 22:36:51,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:36:51,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:51,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:51,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184005069] [2021-11-02 22:36:51,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:36:51,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302649225] [2021-11-02 22:36:51,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302649225] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:36:51,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:36:51,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-02 22:36:51,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980599304] [2021-11-02 22:36:51,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:36:51,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:36:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:36:51,985 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-11-02 22:36:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:54,858 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-11-02 22:36:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:36:54,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 17 [2021-11-02 22:36:54,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:54,860 INFO L225 Difference]: With dead ends: 40 [2021-11-02 22:36:54,860 INFO L226 Difference]: Without dead ends: 34 [2021-11-02 22:36:54,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:36:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-02 22:36:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-11-02 22:36:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 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) [2021-11-02 22:36:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-02 22:36:54,870 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2021-11-02 22:36:54,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:54,871 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-02 22:36:54,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-11-02 22:36:54,871 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-02 22:36:54,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-02 22:36:54,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:54,872 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:54,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:36:55,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:55,081 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:55,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:55,081 INFO L85 PathProgramCache]: Analyzing trace with hash 890165184, now seen corresponding path program 1 times [2021-11-02 22:36:55,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:55,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202095823] [2021-11-02 22:36:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:55,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:55,111 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:36:55,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806331211] [2021-11-02 22:36:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:55,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:55,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:55,114 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:36:55,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:36:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:55,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:36:55,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:36:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:55,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:55,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202095823] [2021-11-02 22:36:55,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:36:55,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806331211] [2021-11-02 22:36:55,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806331211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:55,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:55,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:36:55,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618347537] [2021-11-02 22:36:55,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:36:55,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:55,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:36:55,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:36:55,282 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2021-11-02 22:36:55,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:55,329 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2021-11-02 22:36:55,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:36:55,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) Word has length 19 [2021-11-02 22:36:55,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:55,333 INFO L225 Difference]: With dead ends: 44 [2021-11-02 22:36:55,333 INFO L226 Difference]: Without dead ends: 27 [2021-11-02 22:36:55,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:36:55,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-02 22:36:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-02 22:36:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 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) [2021-11-02 22:36:55,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-11-02 22:36:55,350 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2021-11-02 22:36:55,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:55,351 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-11-02 22:36:55,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2021-11-02 22:36:55,352 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-11-02 22:36:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-02 22:36:55,353 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:55,354 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:55,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 22:36:55,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:55,578 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:55,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:55,579 INFO L85 PathProgramCache]: Analyzing trace with hash 567763771, now seen corresponding path program 1 times [2021-11-02 22:36:55,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:55,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261645277] [2021-11-02 22:36:55,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:55,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:55,599 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:36:55,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070174738] [2021-11-02 22:36:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:55,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:55,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:55,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:36:55,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc6560-92cd-4bd5-acc8-0be3a0ae361d/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process