./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0bb6780cd72c063a3ddf598e6503fa6a629155476e6b8e08224a0e59d0bc00b9 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 12:31:00,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 12:31:00,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 12:31:00,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 12:31:00,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 12:31:00,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 12:31:00,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 12:31:00,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 12:31:00,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 12:31:00,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 12:31:00,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 12:31:00,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 12:31:00,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 12:31:00,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 12:31:00,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 12:31:00,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 12:31:00,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 12:31:00,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 12:31:00,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 12:31:00,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 12:31:00,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 12:31:00,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 12:31:00,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 12:31:00,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 12:31:00,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 12:31:00,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 12:31:00,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 12:31:00,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 12:31:00,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 12:31:00,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 12:31:00,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 12:31:00,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 12:31:00,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 12:31:00,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 12:31:00,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 12:31:00,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 12:31:00,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 12:31:00,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 12:31:00,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 12:31:00,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 12:31:00,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 12:31:00,529 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 12:31:00,571 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 12:31:00,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 12:31:00,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 12:31:00,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 12:31:00,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 12:31:00,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 12:31:00,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 12:31:00,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 12:31:00,574 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 12:31:00,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 12:31:00,584 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 12:31:00,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 12:31:00,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 12:31:00,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 12:31:00,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 12:31:00,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 12:31:00,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 12:31:00,586 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 12:31:00,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 12:31:00,586 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 12:31:00,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 12:31:00,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 12:31:00,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 12:31:00,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 12:31:00,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 12:31:00,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 12:31:00,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 12:31:00,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 12:31:00,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 12:31:00,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 12:31:00,589 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 12:31:00,589 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 12:31:00,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 12:31:00,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 12:31:00,590 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bb6780cd72c063a3ddf598e6503fa6a629155476e6b8e08224a0e59d0bc00b9 [2021-12-17 12:31:00,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 12:31:00,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 12:31:00,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 12:31:00,818 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 12:31:00,819 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 12:31:00,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2021-12-17 12:31:00,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c427679f/5eed3314b5be4f4da3e2932d6017c9fc/FLAGd59e82646 [2021-12-17 12:31:01,290 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 12:31:01,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2021-12-17 12:31:01,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c427679f/5eed3314b5be4f4da3e2932d6017c9fc/FLAGd59e82646 [2021-12-17 12:31:01,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c427679f/5eed3314b5be4f4da3e2932d6017c9fc [2021-12-17 12:31:01,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 12:31:01,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 12:31:01,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 12:31:01,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 12:31:01,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 12:31:01,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 12:31:01" (1/1) ... [2021-12-17 12:31:01,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1732ab89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01, skipping insertion in model container [2021-12-17 12:31:01,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 12:31:01" (1/1) ... [2021-12-17 12:31:01,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 12:31:01,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 12:31:01,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2021-12-17 12:31:01,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 12:31:01,844 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 12:31:01,859 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2021-12-17 12:31:01,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 12:31:01,887 INFO L208 MainTranslator]: Completed translation [2021-12-17 12:31:01,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01 WrapperNode [2021-12-17 12:31:01,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 12:31:01,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 12:31:01,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 12:31:01,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 12:31:01,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01" (1/1) ... [2021-12-17 12:31:01,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01" (1/1) ... [2021-12-17 12:31:01,916 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2021-12-17 12:31:01,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 12:31:01,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 12:31:01,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 12:31:01,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 12:31:01,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01" (1/1) ... [2021-12-17 12:31:01,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01" (1/1) ... [2021-12-17 12:31:01,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01" (1/1) ... [2021-12-17 12:31:01,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01" (1/1) ... [2021-12-17 12:31:01,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01" (1/1) ... [2021-12-17 12:31:01,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01" (1/1) ... [2021-12-17 12:31:01,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01" (1/1) ... [2021-12-17 12:31:01,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 12:31:01,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 12:31:01,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 12:31:01,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 12:31:01,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01" (1/1) ... [2021-12-17 12:31:01,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 12:31:01,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:31:01,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 12:31:01,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 12:31:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 12:31:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 12:31:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 12:31:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 12:31:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 12:31:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 12:31:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 12:31:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 12:31:02,067 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 12:31:02,068 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 12:31:02,159 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 12:31:02,166 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 12:31:02,167 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-17 12:31:02,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:31:02 BoogieIcfgContainer [2021-12-17 12:31:02,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 12:31:02,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 12:31:02,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 12:31:02,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 12:31:02,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 12:31:01" (1/3) ... [2021-12-17 12:31:02,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784a77a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 12:31:02, skipping insertion in model container [2021-12-17 12:31:02,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:31:01" (2/3) ... [2021-12-17 12:31:02,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784a77a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 12:31:02, skipping insertion in model container [2021-12-17 12:31:02,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:31:02" (3/3) ... [2021-12-17 12:31:02,178 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.c [2021-12-17 12:31:02,183 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 12:31:02,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 12:31:02,216 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 12:31:02,221 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 [2021-12-17 12:31:02,222 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 12:31:02,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-17 12:31:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 12:31:02,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:31:02,241 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:31:02,241 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:31:02,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:31:02,246 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2021-12-17 12:31:02,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:31:02,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693495820] [2021-12-17 12:31:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:02,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:31:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:02,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 12:31:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:02,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 12:31:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 12:31:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:02,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 12:31:02,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:31:02,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693495820] [2021-12-17 12:31:02,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693495820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:31:02,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:31:02,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 12:31:02,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531855853] [2021-12-17 12:31:02,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:31:02,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 12:31:02,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:31:02,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 12:31:02,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 12:31:02,553 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 12:31:02,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:31:02,570 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2021-12-17 12:31:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 12:31:02,572 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-12-17 12:31:02,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:31:02,578 INFO L225 Difference]: With dead ends: 63 [2021-12-17 12:31:02,578 INFO L226 Difference]: Without dead ends: 29 [2021-12-17 12:31:02,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 12:31:02,584 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:31:02,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:31:02,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-17 12:31:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-17 12:31:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-17 12:31:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2021-12-17 12:31:02,645 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2021-12-17 12:31:02,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:31:02,645 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2021-12-17 12:31:02,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 12:31:02,646 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2021-12-17 12:31:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 12:31:02,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:31:02,647 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:31:02,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 12:31:02,648 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:31:02,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:31:02,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2021-12-17 12:31:02,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:31:02,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150343168] [2021-12-17 12:31:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:02,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:31:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 12:31:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:02,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 12:31:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 12:31:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 12:31:02,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:31:02,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150343168] [2021-12-17 12:31:02,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150343168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:31:02,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:31:02,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 12:31:02,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885316734] [2021-12-17 12:31:02,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:31:02,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 12:31:02,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:31:02,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 12:31:02,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 12:31:02,806 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-17 12:31:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:31:02,863 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-12-17 12:31:02,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 12:31:02,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2021-12-17 12:31:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:31:02,865 INFO L225 Difference]: With dead ends: 42 [2021-12-17 12:31:02,865 INFO L226 Difference]: Without dead ends: 40 [2021-12-17 12:31:02,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 12:31:02,867 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:31:02,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 134 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:31:02,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-17 12:31:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2021-12-17 12:31:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-17 12:31:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-12-17 12:31:02,878 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2021-12-17 12:31:02,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:31:02,879 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-12-17 12:31:02,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-17 12:31:02,879 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-12-17 12:31:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-17 12:31:02,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:31:02,881 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:31:02,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 12:31:02,882 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:31:02,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:31:02,882 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2021-12-17 12:31:02,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:31:02,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516701154] [2021-12-17 12:31:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:02,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:31:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 12:31:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:02,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 12:31:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:03,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 12:31:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:03,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 12:31:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 12:31:03,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:31:03,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516701154] [2021-12-17 12:31:03,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516701154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:31:03,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:31:03,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 12:31:03,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875489213] [2021-12-17 12:31:03,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:31:03,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 12:31:03,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:31:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 12:31:03,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 12:31:03,036 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 12:31:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:31:03,101 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2021-12-17 12:31:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 12:31:03,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-12-17 12:31:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:31:03,103 INFO L225 Difference]: With dead ends: 46 [2021-12-17 12:31:03,103 INFO L226 Difference]: Without dead ends: 44 [2021-12-17 12:31:03,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 12:31:03,105 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:31:03,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 130 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:31:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-17 12:31:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2021-12-17 12:31:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-17 12:31:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2021-12-17 12:31:03,114 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2021-12-17 12:31:03,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:31:03,114 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2021-12-17 12:31:03,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 12:31:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2021-12-17 12:31:03,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-17 12:31:03,116 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:31:03,116 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:31:03,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 12:31:03,116 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:31:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:31:03,117 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2021-12-17 12:31:03,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:31:03,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180067973] [2021-12-17 12:31:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:03,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:31:03,145 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:31:03,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678926716] [2021-12-17 12:31:03,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:03,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:31:03,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:31:03,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 12:31:03,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 12:31:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:03,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-17 12:31:03,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:31:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-17 12:31:03,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 12:31:03,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:31:03,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180067973] [2021-12-17 12:31:03,518 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:31:03,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678926716] [2021-12-17 12:31:03,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678926716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:31:03,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:31:03,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 12:31:03,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262520700] [2021-12-17 12:31:03,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:31:03,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 12:31:03,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:31:03,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 12:31:03,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-17 12:31:03,526 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-17 12:31:03,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:31:03,673 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2021-12-17 12:31:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 12:31:03,675 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2021-12-17 12:31:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:31:03,678 INFO L225 Difference]: With dead ends: 65 [2021-12-17 12:31:03,678 INFO L226 Difference]: Without dead ends: 51 [2021-12-17 12:31:03,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-17 12:31:03,681 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 12:31:03,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 216 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 12:31:03,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-17 12:31:03,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-17 12:31:03,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-17 12:31:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2021-12-17 12:31:03,691 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 34 [2021-12-17 12:31:03,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:31:03,692 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2021-12-17 12:31:03,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-17 12:31:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2021-12-17 12:31:03,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-17 12:31:03,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:31:03,693 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:31:03,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 12:31:03,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:31:03,908 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:31:03,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:31:03,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2021-12-17 12:31:03,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:31:03,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53183338] [2021-12-17 12:31:03,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:03,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:31:03,919 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:31:03,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466444742] [2021-12-17 12:31:03,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:03,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:31:03,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:31:03,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 12:31:03,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 12:31:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:03,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-17 12:31:03,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:31:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 12:31:04,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:31:04,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 12:31:04,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:31:04,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53183338] [2021-12-17 12:31:04,418 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:31:04,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466444742] [2021-12-17 12:31:04,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466444742] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-17 12:31:04,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 12:31:04,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2021-12-17 12:31:04,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720052760] [2021-12-17 12:31:04,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:31:04,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 12:31:04,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:31:04,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 12:31:04,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-17 12:31:04,422 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-17 12:31:04,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:31:04,487 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2021-12-17 12:31:04,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 12:31:04,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2021-12-17 12:31:04,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:31:04,490 INFO L225 Difference]: With dead ends: 64 [2021-12-17 12:31:04,490 INFO L226 Difference]: Without dead ends: 62 [2021-12-17 12:31:04,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-17 12:31:04,492 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:31:04,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 158 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:31:04,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-17 12:31:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-12-17 12:31:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-17 12:31:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2021-12-17 12:31:04,518 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 41 [2021-12-17 12:31:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:31:04,520 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2021-12-17 12:31:04,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-17 12:31:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2021-12-17 12:31:04,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-17 12:31:04,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:31:04,525 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:31:04,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 12:31:04,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:31:04,732 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:31:04,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:31:04,732 INFO L85 PathProgramCache]: Analyzing trace with hash 105343995, now seen corresponding path program 1 times [2021-12-17 12:31:04,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:31:04,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363004320] [2021-12-17 12:31:04,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:04,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:31:04,750 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:31:04,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750645803] [2021-12-17 12:31:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:04,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:31:04,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:31:04,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 12:31:04,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 12:31:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:04,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-17 12:31:04,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:31:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-17 12:31:05,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:31:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-17 12:31:05,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:31:05,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363004320] [2021-12-17 12:31:05,248 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:31:05,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750645803] [2021-12-17 12:31:05,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750645803] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-17 12:31:05,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 12:31:05,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2021-12-17 12:31:05,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817577362] [2021-12-17 12:31:05,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:31:05,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 12:31:05,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:31:05,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 12:31:05,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-17 12:31:05,251 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-17 12:31:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:31:05,303 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2021-12-17 12:31:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 12:31:05,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-12-17 12:31:05,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:31:05,305 INFO L225 Difference]: With dead ends: 72 [2021-12-17 12:31:05,305 INFO L226 Difference]: Without dead ends: 70 [2021-12-17 12:31:05,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-17 12:31:05,306 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:31:05,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 125 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:31:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-17 12:31:05,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2021-12-17 12:31:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-17 12:31:05,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2021-12-17 12:31:05,317 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 51 [2021-12-17 12:31:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:31:05,317 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2021-12-17 12:31:05,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-17 12:31:05,318 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2021-12-17 12:31:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-17 12:31:05,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:31:05,319 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:31:05,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 12:31:05,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:31:05,536 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:31:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:31:05,536 INFO L85 PathProgramCache]: Analyzing trace with hash 957489548, now seen corresponding path program 1 times [2021-12-17 12:31:05,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:31:05,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994127253] [2021-12-17 12:31:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:05,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:31:05,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:31:05,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188495622] [2021-12-17 12:31:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:05,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:31:05,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:31:05,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 12:31:05,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 12:31:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:05,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 12:31:05,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:31:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-17 12:31:05,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:31:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-17 12:31:06,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:31:06,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994127253] [2021-12-17 12:31:06,128 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:31:06,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188495622] [2021-12-17 12:31:06,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188495622] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 12:31:06,128 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 12:31:06,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-17 12:31:06,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964354793] [2021-12-17 12:31:06,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 12:31:06,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 12:31:06,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:31:06,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 12:31:06,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-17 12:31:06,130 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-17 12:31:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:31:06,364 INFO L93 Difference]: Finished difference Result 96 states and 117 transitions. [2021-12-17 12:31:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 12:31:06,365 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 52 [2021-12-17 12:31:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:31:06,367 INFO L225 Difference]: With dead ends: 96 [2021-12-17 12:31:06,367 INFO L226 Difference]: Without dead ends: 85 [2021-12-17 12:31:06,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-12-17 12:31:06,368 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 32 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 12:31:06,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 289 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 12:31:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-17 12:31:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-12-17 12:31:06,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 50 states have (on average 1.16) internal successors, (58), 53 states have internal predecessors, (58), 23 states have call successors, (23), 10 states have call predecessors, (23), 10 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-17 12:31:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2021-12-17 12:31:06,378 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 52 [2021-12-17 12:31:06,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:31:06,379 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2021-12-17 12:31:06,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-17 12:31:06,379 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2021-12-17 12:31:06,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-17 12:31:06,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:31:06,380 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:31:06,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 12:31:06,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:31:06,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:31:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:31:06,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2021-12-17 12:31:06,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:31:06,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383478490] [2021-12-17 12:31:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:06,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:31:06,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:31:06,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670188225] [2021-12-17 12:31:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:31:06,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:31:06,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:31:06,615 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 12:31:06,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 12:31:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:31:06,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-17 12:31:06,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:31:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 38 proven. 27 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-17 12:31:07,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:31:54,663 WARN L227 SmtUtils]: Spent 27.96s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 12:32:53,586 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse6 (mod |c_ULTIMATE.start_main_~B~0#1| 4294967296))) (or (let ((.cse1 (= 0 (mod |c_ULTIMATE.start_main_~d~0#1| 2))) (.cse10 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse11 (div |c_ULTIMATE.start_main_~d~0#1| 2))) (let ((.cse2 (+ .cse10 .cse11 1)) (.cse4 (+ .cse10 .cse11)) (.cse5 (not .cse1)) (.cse7 (* .cse6 (div |c_ULTIMATE.start_main_~p~0#1| 2))) (.cse8 (* .cse6 |c_ULTIMATE.start_main_~q~0#1|)) (.cse0 (= 0 (mod |c_ULTIMATE.start_main_~p~0#1| 2)))) (and (or .cse0 (let ((.cse3 (+ .cse6 .cse7 |c_ULTIMATE.start_main_~r~0#1| .cse8))) (and (or .cse1 (= .cse2 .cse3)) (or (= .cse4 .cse3) .cse5))) (<= 0 |c_ULTIMATE.start_main_~p~0#1|)) (or (let ((.cse9 (+ .cse7 |c_ULTIMATE.start_main_~r~0#1| .cse8))) (and (or (<= 0 |c_ULTIMATE.start_main_~d~0#1|) .cse1 (= .cse2 .cse9)) (or (= .cse4 .cse9) (and (< |c_ULTIMATE.start_main_~d~0#1| 0) .cse5)))) (and (< |c_ULTIMATE.start_main_~p~0#1| 0) (not .cse0)))))) (not (= |c_ULTIMATE.start_main_~d~0#1| (* .cse6 |c_ULTIMATE.start_main_~p~0#1|))) (<= |c_ULTIMATE.start_main_~d~0#1| |c_ULTIMATE.start_main_~r~0#1|))) is different from true [2021-12-17 12:34:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 5 not checked. [2021-12-17 12:34:14,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:34:14,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383478490] [2021-12-17 12:34:14,592 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:34:14,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670188225] [2021-12-17 12:34:14,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670188225] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 12:34:14,592 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 12:34:14,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 21 [2021-12-17 12:34:14,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247567977] [2021-12-17 12:34:14,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 12:34:14,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-17 12:34:14,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:34:14,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-17 12:34:14,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=307, Unknown=3, NotChecked=36, Total=420 [2021-12-17 12:34:14,594 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-17 12:34:16,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-17 12:34:20,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-17 12:34:24,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-17 12:34:26,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-17 12:34:35,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-17 12:34:40,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:34:40,503 INFO L93 Difference]: Finished difference Result 143 states and 185 transitions. [2021-12-17 12:34:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 12:34:40,504 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) Word has length 71 [2021-12-17 12:34:40,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:34:40,505 INFO L225 Difference]: With dead ends: 143 [2021-12-17 12:34:40,505 INFO L226 Difference]: Without dead ends: 116 [2021-12-17 12:34:40,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 116 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=150, Invalid=605, Unknown=5, NotChecked=52, Total=812 [2021-12-17 12:34:40,507 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 71 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 153 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-12-17 12:34:40,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 268 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 418 Invalid, 3 Unknown, 72 Unchecked, 12.8s Time] [2021-12-17 12:34:40,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-17 12:34:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2021-12-17 12:34:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 72 states have internal predecessors, (81), 31 states have call successors, (31), 12 states have call predecessors, (31), 12 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-17 12:34:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 142 transitions. [2021-12-17 12:34:40,520 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 142 transitions. Word has length 71 [2021-12-17 12:34:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:34:40,521 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 142 transitions. [2021-12-17 12:34:40,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-17 12:34:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 142 transitions. [2021-12-17 12:34:40,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-17 12:34:40,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:34:40,523 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:34:40,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 12:34:40,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:34:40,746 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:34:40,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:34:40,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2021-12-17 12:34:40,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:34:40,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934767841] [2021-12-17 12:34:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:34:40,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:34:40,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:34:40,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110320836] [2021-12-17 12:34:40,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:34:40,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:34:40,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:34:40,757 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 12:34:40,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 12:34:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:34:40,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-17 12:34:40,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:34:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-17 12:34:41,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:34:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-17 12:34:43,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:34:43,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934767841] [2021-12-17 12:34:43,697 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:34:43,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110320836] [2021-12-17 12:34:43,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110320836] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 12:34:43,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 12:34:43,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2021-12-17 12:34:43,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508860761] [2021-12-17 12:34:43,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 12:34:43,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-17 12:34:43,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:34:43,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-17 12:34:43,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-12-17 12:34:43,699 INFO L87 Difference]: Start difference. First operand 112 states and 142 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 12 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2021-12-17 12:34:47,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:34:47,040 INFO L93 Difference]: Finished difference Result 192 states and 264 transitions. [2021-12-17 12:34:47,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 12:34:47,040 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 12 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 82 [2021-12-17 12:34:47,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:34:47,042 INFO L225 Difference]: With dead ends: 192 [2021-12-17 12:34:47,043 INFO L226 Difference]: Without dead ends: 161 [2021-12-17 12:34:47,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2021-12-17 12:34:47,044 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 43 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:34:47,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 390 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-17 12:34:47,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-17 12:34:47,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 143. [2021-12-17 12:34:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 86 states have (on average 1.244186046511628) internal successors, (107), 91 states have internal predecessors, (107), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 38 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-17 12:34:47,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 192 transitions. [2021-12-17 12:34:47,062 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 192 transitions. Word has length 82 [2021-12-17 12:34:47,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:34:47,062 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 192 transitions. [2021-12-17 12:34:47,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 12 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2021-12-17 12:34:47,063 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 192 transitions. [2021-12-17 12:34:47,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-17 12:34:47,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:34:47,064 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:34:47,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 12:34:47,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:34:47,269 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:34:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:34:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1729716470, now seen corresponding path program 1 times [2021-12-17 12:34:47,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:34:47,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147045752] [2021-12-17 12:34:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:34:47,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:34:47,278 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:34:47,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243553167] [2021-12-17 12:34:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:34:47,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:34:47,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:34:47,283 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 12:34:47,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 12:34:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:34:47,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-17 12:34:47,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:34:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-17 12:34:47,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:34:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-17 12:34:47,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:34:47,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147045752] [2021-12-17 12:34:47,964 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:34:47,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243553167] [2021-12-17 12:34:47,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243553167] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 12:34:47,965 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 12:34:47,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-12-17 12:34:47,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906441489] [2021-12-17 12:34:47,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 12:34:47,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 12:34:47,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:34:47,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 12:34:47,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-17 12:34:47,967 INFO L87 Difference]: Start difference. First operand 143 states and 192 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 8 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2021-12-17 12:34:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:34:48,216 INFO L93 Difference]: Finished difference Result 151 states and 200 transitions. [2021-12-17 12:34:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 12:34:48,217 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 8 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) Word has length 87 [2021-12-17 12:34:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:34:48,219 INFO L225 Difference]: With dead ends: 151 [2021-12-17 12:34:48,219 INFO L226 Difference]: Without dead ends: 143 [2021-12-17 12:34:48,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-17 12:34:48,220 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 12 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 12:34:48,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 259 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 12:34:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-17 12:34:48,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-12-17 12:34:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 91 states have internal predecessors, (106), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 38 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-17 12:34:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 191 transitions. [2021-12-17 12:34:48,235 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 191 transitions. Word has length 87 [2021-12-17 12:34:48,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:34:48,236 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 191 transitions. [2021-12-17 12:34:48,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 8 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2021-12-17 12:34:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 191 transitions. [2021-12-17 12:34:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-17 12:34:48,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:34:48,237 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:34:48,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-17 12:34:48,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:34:48,452 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:34:48,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:34:48,452 INFO L85 PathProgramCache]: Analyzing trace with hash -219918921, now seen corresponding path program 1 times [2021-12-17 12:34:48,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:34:48,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166179222] [2021-12-17 12:34:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:34:48,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:34:48,472 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:34:48,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722848429] [2021-12-17 12:34:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:34:48,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:34:48,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:34:48,474 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 12:34:48,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-17 12:34:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:34:48,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 12:34:48,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:34:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-12-17 12:34:48,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 12:34:48,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:34:48,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166179222] [2021-12-17 12:34:48,668 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:34:48,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722848429] [2021-12-17 12:34:48,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722848429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:34:48,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:34:48,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 12:34:48,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425959724] [2021-12-17 12:34:48,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:34:48,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 12:34:48,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:34:48,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 12:34:48,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-17 12:34:48,669 INFO L87 Difference]: Start difference. First operand 143 states and 191 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-17 12:34:48,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:34:48,716 INFO L93 Difference]: Finished difference Result 155 states and 202 transitions. [2021-12-17 12:34:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 12:34:48,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 91 [2021-12-17 12:34:48,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:34:48,719 INFO L225 Difference]: With dead ends: 155 [2021-12-17 12:34:48,719 INFO L226 Difference]: Without dead ends: 143 [2021-12-17 12:34:48,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-17 12:34:48,720 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 7 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:34:48,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 125 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:34:48,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-17 12:34:48,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-12-17 12:34:48,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 91 states have internal predecessors, (104), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 38 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-17 12:34:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 189 transitions. [2021-12-17 12:34:48,741 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 189 transitions. Word has length 91 [2021-12-17 12:34:48,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:34:48,742 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 189 transitions. [2021-12-17 12:34:48,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-17 12:34:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 189 transitions. [2021-12-17 12:34:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 12:34:48,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:34:48,744 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:34:48,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-17 12:34:48,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-17 12:34:48,968 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:34:48,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:34:48,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1562474561, now seen corresponding path program 2 times [2021-12-17 12:34:48,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:34:48,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305546492] [2021-12-17 12:34:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:34:48,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:34:48,975 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:34:48,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510083806] [2021-12-17 12:34:48,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 12:34:48,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:34:48,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:34:48,978 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 12:34:49,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-17 12:34:49,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 12:34:49,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 12:34:49,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 12:34:49,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:34:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 109 proven. 9 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-17 12:34:49,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:34:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-17 12:34:49,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:34:49,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305546492] [2021-12-17 12:34:49,333 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:34:49,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510083806] [2021-12-17 12:34:49,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510083806] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 12:34:49,333 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 12:34:49,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-12-17 12:34:49,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464390646] [2021-12-17 12:34:49,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 12:34:49,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 12:34:49,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:34:49,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 12:34:49,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 12:34:49,335 INFO L87 Difference]: Start difference. First operand 143 states and 189 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 5 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-17 12:34:49,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:34:49,410 INFO L93 Difference]: Finished difference Result 167 states and 217 transitions. [2021-12-17 12:34:49,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 12:34:49,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 5 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 95 [2021-12-17 12:34:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:34:49,412 INFO L225 Difference]: With dead ends: 167 [2021-12-17 12:34:49,412 INFO L226 Difference]: Without dead ends: 107 [2021-12-17 12:34:49,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 12:34:49,414 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 12:34:49,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 128 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 12:34:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-17 12:34:49,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-12-17 12:34:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 66 states have (on average 1.121212121212121) internal successors, (74), 70 states have internal predecessors, (74), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-17 12:34:49,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 127 transitions. [2021-12-17 12:34:49,425 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 127 transitions. Word has length 95 [2021-12-17 12:34:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:34:49,425 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 127 transitions. [2021-12-17 12:34:49,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 5 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-17 12:34:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 127 transitions. [2021-12-17 12:34:49,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-17 12:34:49,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:34:49,426 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:34:49,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-17 12:34:49,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:34:49,639 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:34:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:34:49,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2103086134, now seen corresponding path program 2 times [2021-12-17 12:34:49,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:34:49,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051850627] [2021-12-17 12:34:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:34:49,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:34:49,647 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:34:49,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574701677] [2021-12-17 12:34:49,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 12:34:49,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:34:49,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:34:49,649 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 12:34:49,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-17 12:34:49,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 12:34:49,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 12:34:49,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-17 12:34:49,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:34:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 162 proven. 21 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-12-17 12:34:50,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:35:07,262 WARN L860 $PredicateComparison]: unable to prove that (<= 0 (div (let ((.cse0 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296))) (+ (* (div (+ (* .cse0 (- 1)) (- 1)) (- 2)) (- 1)) (div .cse0 4) 1)) 4294967296)) is different from true [2021-12-17 12:35:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-12-17 12:35:13,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:35:13,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051850627] [2021-12-17 12:35:13,843 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:35:13,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574701677] [2021-12-17 12:35:13,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574701677] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 12:35:13,843 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 12:35:13,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-17 12:35:13,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027138855] [2021-12-17 12:35:13,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 12:35:13,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 12:35:13,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:35:13,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 12:35:13,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=104, Unknown=1, NotChecked=20, Total=156 [2021-12-17 12:35:13,845 INFO L87 Difference]: Start difference. First operand 107 states and 127 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 10 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (28), 9 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-17 12:35:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:35:14,054 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2021-12-17 12:35:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 12:35:14,054 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 10 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (28), 9 states have call predecessors, (28), 10 states have call successors, (28) Word has length 101 [2021-12-17 12:35:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:35:14,055 INFO L225 Difference]: With dead ends: 111 [2021-12-17 12:35:14,055 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 12:35:14,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 188 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=60, Invalid=183, Unknown=1, NotChecked=28, Total=272 [2021-12-17 12:35:14,056 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 12:35:14,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 211 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2021-12-17 12:35:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 12:35:14,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 12:35:14,057 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) [2021-12-17 12:35:14,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 12:35:14,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2021-12-17 12:35:14,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:35:14,058 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 12:35:14,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 10 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (28), 9 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-17 12:35:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 12:35:14,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 12:35:14,061 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 12:35:14,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-17 12:35:14,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-17 12:35:14,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 12:35:17,591 INFO L854 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (and (<= 1 .cse0) (= |ULTIMATE.start_main_~d~0#1| .cse0) (= |ULTIMATE.start_main_~p~0#1| 1) (<= .cse0 1))) [2021-12-17 12:35:17,591 INFO L858 garLoopResultBuilder]: For program point L48(lines 46 58) no Hoare annotation was computed. [2021-12-17 12:35:17,591 INFO L854 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse5)) (.cse1 (= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) (+ |ULTIMATE.start_main_~r~0#1| (* .cse5 |ULTIMATE.start_main_~q~0#1|)))) (.cse2 (<= (div |ULTIMATE.start_main_~r~0#1| (- 4294967296)) (div (+ (* |ULTIMATE.start_main_~r~0#1| (- 1)) 1) 4294967296))) (.cse3 (= (+ (* 4294967296 (div |ULTIMATE.start_main_~A~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse4 (= |ULTIMATE.start_main_~d~0#1| (* .cse5 |ULTIMATE.start_main_~p~0#1|)))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~p~0#1| 1) .cse3 .cse4 (< (div (+ (* |ULTIMATE.start_main_~d~0#1| (- 1)) 1) (- 4294967296)) 1)) (and .cse0 .cse1 .cse2 .cse3 (<= .cse5 |ULTIMATE.start_main_~r~0#1|) .cse4 (= |ULTIMATE.start_main_~d~0#1| (* 2 .cse5)))))) [2021-12-17 12:35:17,592 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 12:35:17,592 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 12:35:17,592 INFO L858 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2021-12-17 12:35:17,592 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 12:35:17,592 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 1) [2021-12-17 12:35:17,592 INFO L854 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 1) (<= (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 1)) [2021-12-17 12:35:17,592 INFO L854 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse5)) (.cse1 (= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) (+ |ULTIMATE.start_main_~r~0#1| (* .cse5 |ULTIMATE.start_main_~q~0#1|)))) (.cse2 (<= (div |ULTIMATE.start_main_~r~0#1| (- 4294967296)) (div (+ (* |ULTIMATE.start_main_~r~0#1| (- 1)) 1) 4294967296))) (.cse3 (= (+ (* 4294967296 (div |ULTIMATE.start_main_~A~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse4 (= |ULTIMATE.start_main_~d~0#1| (* .cse5 |ULTIMATE.start_main_~p~0#1|)))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~p~0#1| 1) .cse3 .cse4 (< (div (+ (* |ULTIMATE.start_main_~d~0#1| (- 1)) 1) (- 4294967296)) 1)) (and .cse0 .cse1 .cse2 .cse3 (<= .cse5 |ULTIMATE.start_main_~r~0#1|) .cse4 (= |ULTIMATE.start_main_~d~0#1| (* 2 .cse5)))))) [2021-12-17 12:35:17,592 INFO L854 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse5)) (.cse1 (= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) (+ |ULTIMATE.start_main_~r~0#1| (* .cse5 |ULTIMATE.start_main_~q~0#1|)))) (.cse2 (<= (div |ULTIMATE.start_main_~r~0#1| (- 4294967296)) (div (+ (* |ULTIMATE.start_main_~r~0#1| (- 1)) 1) 4294967296))) (.cse3 (= (+ (* 4294967296 (div |ULTIMATE.start_main_~A~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse4 (= |ULTIMATE.start_main_~d~0#1| (* .cse5 |ULTIMATE.start_main_~p~0#1|)))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~p~0#1| 1) .cse3 .cse4 (< (div (+ (* |ULTIMATE.start_main_~d~0#1| (- 1)) 1) (- 4294967296)) 1)) (and .cse0 .cse1 .cse2 .cse3 (<= .cse5 |ULTIMATE.start_main_~r~0#1|) .cse4 (= |ULTIMATE.start_main_~d~0#1| (* 2 .cse5)))))) [2021-12-17 12:35:17,592 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 12:35:17,593 INFO L861 garLoopResultBuilder]: At program point L62(lines 22 63) the Hoare annotation is: true [2021-12-17 12:35:17,593 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-12-17 12:35:17,593 INFO L858 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2021-12-17 12:35:17,593 INFO L858 garLoopResultBuilder]: For program point L54-2(lines 22 63) no Hoare annotation was computed. [2021-12-17 12:35:17,593 INFO L854 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse2 (* .cse1 |ULTIMATE.start_main_~q~0#1|))) (and (<= .cse0 1) (<= 1 .cse1) (= .cse0 (+ |ULTIMATE.start_main_~r~0#1| .cse2)) (= |ULTIMATE.start_main_~d~0#1| .cse1) (= (+ .cse0 |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (* .cse1 |ULTIMATE.start_main_~p~0#1|) .cse2)) (<= .cse1 1)))) [2021-12-17 12:35:17,593 INFO L854 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse5)) (.cse1 (= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) (+ |ULTIMATE.start_main_~r~0#1| (* .cse5 |ULTIMATE.start_main_~q~0#1|)))) (.cse2 (<= (div |ULTIMATE.start_main_~r~0#1| (- 4294967296)) (div (+ (* |ULTIMATE.start_main_~r~0#1| (- 1)) 1) 4294967296))) (.cse3 (= (+ (* 4294967296 (div |ULTIMATE.start_main_~A~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse4 (= |ULTIMATE.start_main_~d~0#1| (* .cse5 |ULTIMATE.start_main_~p~0#1|)))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~p~0#1| 1) .cse3 .cse4 (< (div (+ (* |ULTIMATE.start_main_~d~0#1| (- 1)) 1) (- 4294967296)) 1)) (and .cse0 .cse1 .cse2 .cse3 (<= .cse5 |ULTIMATE.start_main_~r~0#1|) .cse4 (= |ULTIMATE.start_main_~d~0#1| (* 2 .cse5)))))) [2021-12-17 12:35:17,593 INFO L861 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2021-12-17 12:35:17,593 INFO L858 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-12-17 12:35:17,593 INFO L854 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse8 (* .cse4 |ULTIMATE.start_main_~p~0#1|)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse9 (* .cse4 |ULTIMATE.start_main_~q~0#1|))) (let ((.cse0 (= .cse7 (+ |ULTIMATE.start_main_~r~0#1| .cse9))) (.cse1 (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~d~0#1| .cse8)) (.cse6 (* 2 .cse4)) (.cse5 (<= .cse4 1))) (or (and .cse0 .cse1 .cse2 .cse3 (< (div (+ (* |ULTIMATE.start_main_~d~0#1| (- 1)) 1) (- 4294967296)) 1)) (and .cse0 .cse1 (<= .cse4 |ULTIMATE.start_main_~r~0#1|) .cse2 .cse3 .cse5 (= |ULTIMATE.start_main_~d~0#1| .cse6)) (and (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) .cse7) (< .cse7 .cse6) (= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) (= (+ .cse7 |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| .cse8 .cse9)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= .cse7 (+ .cse4 |ULTIMATE.start_main_~r~0#1|)) .cse5))))) [2021-12-17 12:35:17,593 INFO L854 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse8 (* .cse4 |ULTIMATE.start_main_~p~0#1|)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse9 (* .cse4 |ULTIMATE.start_main_~q~0#1|))) (let ((.cse0 (= .cse7 (+ |ULTIMATE.start_main_~r~0#1| .cse9))) (.cse1 (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~d~0#1| .cse8)) (.cse6 (* 2 .cse4)) (.cse5 (<= .cse4 1))) (or (and .cse0 .cse1 .cse2 .cse3 (< (div (+ (* |ULTIMATE.start_main_~d~0#1| (- 1)) 1) (- 4294967296)) 1)) (and .cse0 .cse1 (<= .cse4 |ULTIMATE.start_main_~r~0#1|) .cse2 .cse3 .cse5 (= |ULTIMATE.start_main_~d~0#1| .cse6)) (and (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) .cse7) (< .cse7 .cse6) (= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) (= (+ .cse7 |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| .cse8 .cse9)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= .cse7 (+ .cse4 |ULTIMATE.start_main_~r~0#1|)) .cse5))))) [2021-12-17 12:35:17,593 INFO L858 garLoopResultBuilder]: For program point L39(lines 36 44) no Hoare annotation was computed. [2021-12-17 12:35:17,593 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2021-12-17 12:35:17,593 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-12-17 12:35:17,594 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2021-12-17 12:35:17,594 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2021-12-17 12:35:17,594 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-12-17 12:35:17,594 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-12-17 12:35:17,594 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-12-17 12:35:17,594 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-12-17 12:35:17,594 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-12-17 12:35:17,594 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-12-17 12:35:17,596 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:35:17,597 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 12:35:17,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 12:35:17 BoogieIcfgContainer [2021-12-17 12:35:17,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 12:35:17,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 12:35:17,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 12:35:17,616 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 12:35:17,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:31:02" (3/4) ... [2021-12-17 12:35:17,619 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 12:35:17,624 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-17 12:35:17,624 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-17 12:35:17,627 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-17 12:35:17,628 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-17 12:35:17,628 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 12:35:17,628 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 12:35:17,655 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 12:35:17,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 12:35:17,656 INFO L158 Benchmark]: Toolchain (without parser) took 255963.42ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 88.5MB in the beginning and 99.6MB in the end (delta: -11.1MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2021-12-17 12:35:17,656 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 88.1MB. Free memory was 59.8MB in the beginning and 59.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 12:35:17,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.03ms. Allocated memory is still 111.1MB. Free memory was 88.4MB in the beginning and 78.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 12:35:17,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.27ms. Allocated memory is still 111.1MB. Free memory was 78.2MB in the beginning and 76.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 12:35:17,657 INFO L158 Benchmark]: Boogie Preprocessor took 33.92ms. Allocated memory is still 111.1MB. Free memory was 76.6MB in the beginning and 75.6MB in the end (delta: 995.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 12:35:17,657 INFO L158 Benchmark]: RCFGBuilder took 215.28ms. Allocated memory is still 111.1MB. Free memory was 75.6MB in the beginning and 65.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 12:35:17,657 INFO L158 Benchmark]: TraceAbstraction took 255445.68ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 65.3MB in the beginning and 102.8MB in the end (delta: -37.5MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. [2021-12-17 12:35:17,658 INFO L158 Benchmark]: Witness Printer took 39.86ms. Allocated memory is still 134.2MB. Free memory was 102.8MB in the beginning and 99.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-17 12:35:17,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 88.1MB. Free memory was 59.8MB in the beginning and 59.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.03ms. Allocated memory is still 111.1MB. Free memory was 88.4MB in the beginning and 78.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.27ms. Allocated memory is still 111.1MB. Free memory was 78.2MB in the beginning and 76.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.92ms. Allocated memory is still 111.1MB. Free memory was 76.6MB in the beginning and 75.6MB in the end (delta: 995.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 215.28ms. Allocated memory is still 111.1MB. Free memory was 75.6MB in the beginning and 65.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 255445.68ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 65.3MB in the beginning and 102.8MB in the end (delta: -37.5MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. * Witness Printer took 39.86ms. Allocated memory is still 134.2MB. Free memory was 102.8MB in the beginning and 99.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 255.4s, OverallIterations: 13, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 30.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 278 SdHoareTripleChecker+Valid, 15.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 231 mSDsluCounter, 2476 SdHoareTripleChecker+Invalid, 15.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 98 IncrementalHoareTripleChecker+Unchecked, 1940 mSDsCounter, 319 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1357 IncrementalHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 319 mSolverCounterUnsat, 536 mSDtfsCounter, 1357 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1339 GetRequests, 1185 SyntacticMatches, 18 SemanticMatches, 136 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 55.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=9, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 42 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 98 PreInvPairs, 123 NumberOfFragments, 805 HoareAnnotationTreeSize, 98 FomulaSimplifications, 94 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 6688 FormulaSimplificationTreeSizeReductionInter, 3.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 218.1s InterpolantComputationTime, 782 NumberOfCodeBlocks, 782 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1341 ConstructedInterpolants, 0 QuantifiedInterpolants, 7098 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1616 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 3190/3335 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((1 <= B % 4294967296 && A % 4294967296 == r + B % 4294967296 * q) && r / -4294967296 <= (r * -1 + 1) / 4294967296) && p == 1) && 4294967296 * (A / 4294967296) + r == A) && d == B % 4294967296 * p) && (d * -1 + 1) / -4294967296 < 1) || ((((((1 <= B % 4294967296 && A % 4294967296 == r + B % 4294967296 * q) && r / -4294967296 <= (r * -1 + 1) / 4294967296) && 4294967296 * (A / 4294967296) + r == A) && B % 4294967296 <= r) && d == B % 4294967296 * p) && d == 2 * (B % 4294967296)) RESULT: Ultimate proved your program to be correct! [2021-12-17 12:35:17,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE