./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/cohendiv-ll_valuebound2.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 95c338a7a91abcfb8302c7314ea1de7bdde280884a10e8d539233a34032b9a5d --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 06:54:40,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 06:54:40,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 06:54:40,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 06:54:40,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 06:54:40,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 06:54:40,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 06:54:40,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 06:54:40,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 06:54:40,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 06:54:40,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 06:54:40,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 06:54:40,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 06:54:40,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 06:54:40,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 06:54:40,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 06:54:40,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 06:54:40,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 06:54:40,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 06:54:40,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 06:54:40,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 06:54:40,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 06:54:40,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 06:54:40,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 06:54:40,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 06:54:40,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 06:54:40,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 06:54:40,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 06:54:40,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 06:54:40,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 06:54:40,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 06:54:40,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 06:54:40,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 06:54:40,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 06:54:40,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 06:54:40,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 06:54:40,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 06:54:40,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 06:54:40,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 06:54:40,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 06:54:40,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 06:54:40,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 06:54:40,874 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 06:54:40,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 06:54:40,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 06:54:40,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 06:54:40,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 06:54:40,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 06:54:40,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 06:54:40,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 06:54:40,877 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 06:54:40,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 06:54:40,878 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 06:54:40,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 06:54:40,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 06:54:40,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 06:54:40,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 06:54:40,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 06:54:40,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 06:54:40,879 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 06:54:40,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 06:54:40,879 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 06:54:40,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 06:54:40,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 06:54:40,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 06:54:40,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 06:54:40,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:54:40,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 06:54:40,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 06:54:40,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 06:54:40,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 06:54:40,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 06:54:40,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 06:54:40,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 06:54:40,881 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 06:54:40,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 06:54:40,882 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 06:54:40,882 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95c338a7a91abcfb8302c7314ea1de7bdde280884a10e8d539233a34032b9a5d [2023-02-17 06:54:41,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 06:54:41,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 06:54:41,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 06:54:41,134 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 06:54:41,134 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 06:54:41,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2023-02-17 06:54:42,211 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 06:54:42,347 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 06:54:42,347 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2023-02-17 06:54:42,352 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/022f0e8fd/b1e682fdd7e84a22ae4fa18cb884cbc1/FLAGa95ff5078 [2023-02-17 06:54:42,363 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/022f0e8fd/b1e682fdd7e84a22ae4fa18cb884cbc1 [2023-02-17 06:54:42,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 06:54:42,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 06:54:42,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 06:54:42,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 06:54:42,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 06:54:42,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f13fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42, skipping insertion in model container [2023-02-17 06:54:42,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 06:54:42,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 06:54:42,522 WARN L237 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/cohendiv-ll_valuebound2.c[576,589] [2023-02-17 06:54:42,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:54:42,543 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 06:54:42,551 WARN L237 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/cohendiv-ll_valuebound2.c[576,589] [2023-02-17 06:54:42,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:54:42,576 INFO L208 MainTranslator]: Completed translation [2023-02-17 06:54:42,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42 WrapperNode [2023-02-17 06:54:42,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 06:54:42,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 06:54:42,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 06:54:42,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 06:54:42,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,621 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2023-02-17 06:54:42,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 06:54:42,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 06:54:42,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 06:54:42,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 06:54:42,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,662 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 06:54:42,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 06:54:42,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 06:54:42,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 06:54:42,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42" (1/1) ... [2023-02-17 06:54:42,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:54:42,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:54:42,697 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) [2023-02-17 06:54:42,703 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 [2023-02-17 06:54:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 06:54:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-17 06:54:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-17 06:54:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 06:54:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 06:54:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 06:54:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 06:54:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 06:54:42,809 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 06:54:42,814 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 06:54:42,995 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 06:54:42,999 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 06:54:43,000 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 06:54:43,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:54:43 BoogieIcfgContainer [2023-02-17 06:54:43,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 06:54:43,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 06:54:43,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 06:54:43,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 06:54:43,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 06:54:42" (1/3) ... [2023-02-17 06:54:43,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e244288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:54:43, skipping insertion in model container [2023-02-17 06:54:43,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:54:42" (2/3) ... [2023-02-17 06:54:43,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e244288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:54:43, skipping insertion in model container [2023-02-17 06:54:43,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:54:43" (3/3) ... [2023-02-17 06:54:43,048 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound2.c [2023-02-17 06:54:43,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 06:54:43,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 06:54:43,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 06:54:43,128 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@103d9aad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 06:54:43,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 06:54:43,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 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) [2023-02-17 06:54:43,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 06:54:43,142 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:54:43,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:54:43,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:54:43,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:54:43,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1389076267, now seen corresponding path program 1 times [2023-02-17 06:54:43,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:54:43,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529278634] [2023-02-17 06:54:43,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:54:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:54:43,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:54:43,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529278634] [2023-02-17 06:54:43,254 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 06:54:43,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280524474] [2023-02-17 06:54:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:43,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:54:43,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:54:43,257 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) [2023-02-17 06:54:43,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 06:54:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:54:43,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 06:54:43,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:54:43,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-17 06:54:43,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 06:54:43,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280524474] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:54:43,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:54:43,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 06:54:43,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723405385] [2023-02-17 06:54:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:54:43,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 06:54:43,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:54:43,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 06:54:43,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 06:54:43,398 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-02-17 06:54:43,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:54:43,437 INFO L93 Difference]: Finished difference Result 65 states and 104 transitions. [2023-02-17 06:54:43,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 06:54:43,439 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 [2023-02-17 06:54:43,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:54:43,446 INFO L225 Difference]: With dead ends: 65 [2023-02-17 06:54:43,446 INFO L226 Difference]: Without dead ends: 30 [2023-02-17 06:54:43,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 06:54:43,456 INFO L413 NwaCegarLoop]: 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 [2023-02-17 06:54:43,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:54:43,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-17 06:54:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-17 06:54:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 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) [2023-02-17 06:54:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2023-02-17 06:54:43,512 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 24 [2023-02-17 06:54:43,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:54:43,513 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2023-02-17 06:54:43,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-02-17 06:54:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-02-17 06:54:43,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 06:54:43,522 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:54:43,522 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:54:43,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 06:54:43,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-17 06:54:43,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:54:43,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:54:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash 240368937, now seen corresponding path program 1 times [2023-02-17 06:54:43,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:54:43,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088832876] [2023-02-17 06:54:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:43,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:54:43,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 06:54:43,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224715221] [2023-02-17 06:54:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:43,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:54:43,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:54:43,774 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) [2023-02-17 06:54:43,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 06:54:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:54:43,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-17 06:54:43,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:54:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-17 06:54:43,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 06:54:43,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:54:43,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088832876] [2023-02-17 06:54:43,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 06:54:43,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224715221] [2023-02-17 06:54:43,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224715221] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:54:44,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:54:44,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-17 06:54:44,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394915082] [2023-02-17 06:54:44,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:54:44,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 06:54:44,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:54:44,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 06:54:44,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-17 06:54:44,006 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 06:54:44,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:54:44,181 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2023-02-17 06:54:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 06:54:44,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-02-17 06:54:44,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:54:44,183 INFO L225 Difference]: With dead ends: 41 [2023-02-17 06:54:44,183 INFO L226 Difference]: Without dead ends: 39 [2023-02-17 06:54:44,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-17 06:54:44,184 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:54:44,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 133 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 06:54:44,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-17 06:54:44,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2023-02-17 06:54:44,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-17 06:54:44,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2023-02-17 06:54:44,191 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 24 [2023-02-17 06:54:44,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:54:44,193 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2023-02-17 06:54:44,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 06:54:44,193 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2023-02-17 06:54:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 06:54:44,194 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:54:44,194 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:54:44,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 06:54:44,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-17 06:54:44,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:54:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:54:44,401 INFO L85 PathProgramCache]: Analyzing trace with hash -854318377, now seen corresponding path program 1 times [2023-02-17 06:54:44,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:54:44,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250918351] [2023-02-17 06:54:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:44,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:54:44,411 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 06:54:44,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180654322] [2023-02-17 06:54:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:44,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:54:44,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:54:44,430 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) [2023-02-17 06:54:44,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 06:54:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:54:44,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-17 06:54:44,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:54:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-17 06:54:44,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:54:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 06:54:44,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:54:44,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250918351] [2023-02-17 06:54:44,614 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 06:54:44,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180654322] [2023-02-17 06:54:44,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180654322] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-17 06:54:44,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 06:54:44,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-02-17 06:54:44,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337574280] [2023-02-17 06:54:44,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:54:44,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 06:54:44,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:54:44,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 06:54:44,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-17 06:54:44,644 INFO L87 Difference]: Start difference. First operand 36 states and 45 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) [2023-02-17 06:54:44,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:54:44,725 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2023-02-17 06:54:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 06:54:44,726 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 [2023-02-17 06:54:44,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:54:44,729 INFO L225 Difference]: With dead ends: 53 [2023-02-17 06:54:44,729 INFO L226 Difference]: Without dead ends: 50 [2023-02-17 06:54:44,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-17 06:54:44,732 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 06:54:44,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 118 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:54:44,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-17 06:54:44,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2023-02-17 06:54:44,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-17 06:54:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2023-02-17 06:54:44,744 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 29 [2023-02-17 06:54:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:54:44,745 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2023-02-17 06:54:44,745 INFO L496 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) [2023-02-17 06:54:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2023-02-17 06:54:44,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-17 06:54:44,746 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:54:44,746 INFO L195 NwaCegarLoop]: 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, 1, 1] [2023-02-17 06:54:44,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-17 06:54:44,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:54:44,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:54:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:54:44,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1997084946, now seen corresponding path program 1 times [2023-02-17 06:54:44,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:54:44,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115722020] [2023-02-17 06:54:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:44,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:54:44,965 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 06:54:44,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084828704] [2023-02-17 06:54:44,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:44,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:54:44,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:54:44,984 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) [2023-02-17 06:54:44,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 06:54:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:54:45,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-17 06:54:45,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:54:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-17 06:54:45,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:54:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 06:54:45,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:54:45,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115722020] [2023-02-17 06:54:45,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 06:54:45,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084828704] [2023-02-17 06:54:45,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084828704] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-17 06:54:45,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 06:54:45,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 15 [2023-02-17 06:54:45,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392987206] [2023-02-17 06:54:45,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:54:45,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 06:54:45,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:54:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 06:54:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-02-17 06:54:45,211 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-17 06:54:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:54:45,254 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2023-02-17 06:54:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 06:54:45,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2023-02-17 06:54:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:54:45,255 INFO L225 Difference]: With dead ends: 55 [2023-02-17 06:54:45,255 INFO L226 Difference]: Without dead ends: 53 [2023-02-17 06:54:45,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-02-17 06:54:45,256 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 06:54:45,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 85 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:54:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-17 06:54:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-02-17 06:54:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-17 06:54:45,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2023-02-17 06:54:45,266 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 36 [2023-02-17 06:54:45,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:54:45,267 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2023-02-17 06:54:45,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-17 06:54:45,267 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2023-02-17 06:54:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 06:54:45,268 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:54:45,268 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 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] [2023-02-17 06:54:45,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 06:54:45,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:54:45,473 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:54:45,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:54:45,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2056573358, now seen corresponding path program 1 times [2023-02-17 06:54:45,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:54:45,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776637119] [2023-02-17 06:54:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:45,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:54:45,483 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 06:54:45,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199823873] [2023-02-17 06:54:45,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:45,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:54:45,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:54:45,484 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) [2023-02-17 06:54:45,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 06:54:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:54:45,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 06:54:45,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:54:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-17 06:54:45,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 06:54:45,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:54:45,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776637119] [2023-02-17 06:54:45,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 06:54:45,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199823873] [2023-02-17 06:54:45,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199823873] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:54:45,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:54:45,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 06:54:45,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068634480] [2023-02-17 06:54:45,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:54:45,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 06:54:45,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:54:45,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 06:54:45,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-17 06:54:45,566 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-17 06:54:45,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:54:45,682 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2023-02-17 06:54:45,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 06:54:45,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2023-02-17 06:54:45,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:54:45,683 INFO L225 Difference]: With dead ends: 59 [2023-02-17 06:54:45,683 INFO L226 Difference]: Without dead ends: 57 [2023-02-17 06:54:45,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-17 06:54:45,683 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:54:45,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 132 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 06:54:45,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-17 06:54:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-02-17 06:54:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-17 06:54:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2023-02-17 06:54:45,690 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 46 [2023-02-17 06:54:45,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:54:45,690 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2023-02-17 06:54:45,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-17 06:54:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2023-02-17 06:54:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-17 06:54:45,691 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:54:45,692 INFO L195 NwaCegarLoop]: 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] [2023-02-17 06:54:45,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-17 06:54:45,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:54:45,897 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:54:45,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:54:45,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2085516536, now seen corresponding path program 1 times [2023-02-17 06:54:45,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:54:45,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240475871] [2023-02-17 06:54:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:45,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:54:45,908 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 06:54:45,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503971066] [2023-02-17 06:54:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:45,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:54:45,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:54:45,930 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) [2023-02-17 06:54:45,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 06:54:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:54:45,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-17 06:54:45,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:54:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-17 06:54:46,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:54:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-17 06:54:46,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:54:46,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240475871] [2023-02-17 06:54:46,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 06:54:46,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503971066] [2023-02-17 06:54:46,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503971066] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:54:46,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 06:54:46,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-17 06:54:46,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548489600] [2023-02-17 06:54:46,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 06:54:46,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 06:54:46,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:54:46,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 06:54:46,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-17 06:54:46,143 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-17 06:54:46,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:54:46,300 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2023-02-17 06:54:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 06:54:46,301 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 52 [2023-02-17 06:54:46,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:54:46,302 INFO L225 Difference]: With dead ends: 75 [2023-02-17 06:54:46,302 INFO L226 Difference]: Without dead ends: 73 [2023-02-17 06:54:46,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-02-17 06:54:46,303 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:54:46,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 133 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 06:54:46,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-17 06:54:46,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2023-02-17 06:54:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-17 06:54:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2023-02-17 06:54:46,313 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 52 [2023-02-17 06:54:46,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:54:46,314 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2023-02-17 06:54:46,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-17 06:54:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2023-02-17 06:54:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-17 06:54:46,315 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:54:46,315 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:54:46,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 06:54:46,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:54:46,522 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:54:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:54:46,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1724367982, now seen corresponding path program 1 times [2023-02-17 06:54:46,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:54:46,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082032134] [2023-02-17 06:54:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:46,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:54:46,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 06:54:46,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270046139] [2023-02-17 06:54:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:54:46,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:54:46,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:54:46,544 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) [2023-02-17 06:54:46,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 06:54:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:54:46,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-17 06:54:46,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:54:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-17 06:54:46,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:54:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-02-17 06:54:46,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:54:46,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082032134] [2023-02-17 06:54:46,725 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 06:54:46,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270046139] [2023-02-17 06:54:46,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270046139] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-17 06:54:46,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 06:54:46,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-02-17 06:54:46,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909299671] [2023-02-17 06:54:46,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:54:46,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 06:54:46,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:54:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 06:54:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-02-17 06:54:46,727 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-17 06:54:46,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:54:46,831 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2023-02-17 06:54:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 06:54:46,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 59 [2023-02-17 06:54:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:54:46,832 INFO L225 Difference]: With dead ends: 61 [2023-02-17 06:54:46,832 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 06:54:46,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-02-17 06:54:46,833 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:54:46,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 85 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 06:54:46,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 06:54:46,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 06:54:46,833 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) [2023-02-17 06:54:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 06:54:46,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2023-02-17 06:54:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:54:46,834 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 06:54:46,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-17 06:54:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 06:54:46,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 06:54:46,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 06:54:46,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-17 06:54:47,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:54:47,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 06:54:47,049 INFO L899 garLoopResultBuilder]: For program point L64(line 64) no Hoare annotation was computed. [2023-02-17 06:54:47,050 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2023-02-17 06:54:47,050 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2023-02-17 06:54:47,050 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-02-17 06:54:47,050 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse6 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse3 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse4 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse7 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 (or (and .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 .cse2 .cse3 .cse4 .cse6 .cse5)) .cse7) (and (or (and .cse1 .cse2 .cse3 .cse4 .cse6 .cse5 .cse7) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse7)) .cse0 .cse7))) [2023-02-17 06:54:47,050 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse6 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse3 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse4 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse7 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 (or (and .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 .cse2 .cse3 .cse4 .cse6 .cse5)) .cse7) (and (or (and .cse1 .cse2 .cse3 .cse4 .cse6 .cse5 .cse7) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse7)) .cse0 .cse7))) [2023-02-17 06:54:47,050 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 66) the Hoare annotation is: true [2023-02-17 06:54:47,050 INFO L899 garLoopResultBuilder]: For program point L40(lines 38 62) no Hoare annotation was computed. [2023-02-17 06:54:47,051 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 06:54:47,051 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 06:54:47,051 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse6 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse3 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse4 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse7 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 (or (and .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 .cse2 .cse3 .cse4 .cse6 .cse5)) .cse7) (and (or (and .cse1 .cse2 .cse3 .cse4 .cse6 .cse5 .cse7) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse7)) .cse0 .cse7))) [2023-02-17 06:54:47,051 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 06:54:47,051 INFO L902 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2023-02-17 06:54:47,051 INFO L895 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (>= |ULTIMATE.start_main_~y~0#1| 0)) [2023-02-17 06:54:47,051 INFO L899 garLoopResultBuilder]: For program point L50(lines 47 59) no Hoare annotation was computed. [2023-02-17 06:54:47,051 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 06:54:47,052 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse5 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= |ULTIMATE.start_main_~a~0#1| 0) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~b~0#1| 0) .cse4 .cse5))) [2023-02-17 06:54:47,052 INFO L895 garLoopResultBuilder]: At program point L38-3(lines 38 62) the Hoare annotation is: (let ((.cse2 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (let ((.cse3 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse4 (>= |ULTIMATE.start_main_~y~0#1| 0))) (or (and .cse3 .cse4 .cse2) (and .cse3 (= |ULTIMATE.start_main_~a~0#1| 0) .cse4 .cse2 (= |ULTIMATE.start_main_~b~0#1| 0))))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1) (and (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|)))) .cse0 .cse2 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) .cse1)))) [2023-02-17 06:54:47,052 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (and (<= |ULTIMATE.start_main_~y~0#1| 2) (>= |ULTIMATE.start_main_~y~0#1| 0) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|)))) (>= |ULTIMATE.start_main_~y~0#1| 1) (>= |ULTIMATE.start_main_~r~0#1| 0) (>= |ULTIMATE.start_main_~r~0#1| (* 2 .cse0)) (= |ULTIMATE.start_main_~b~0#1| .cse0) (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) [2023-02-17 06:54:47,052 INFO L899 garLoopResultBuilder]: For program point L55-1(line 55) no Hoare annotation was computed. [2023-02-17 06:54:47,052 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse6 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse3 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse4 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse7 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 (or (and .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 .cse2 .cse3 .cse4 .cse6 .cse5)) .cse7) (and (or (and .cse1 .cse2 .cse3 .cse4 .cse6 .cse5 .cse7) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse7)) .cse0 .cse7))) [2023-02-17 06:54:47,052 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2023-02-17 06:54:47,052 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse5 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= |ULTIMATE.start_main_~a~0#1| 0) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~b~0#1| 0) .cse4 .cse5))) [2023-02-17 06:54:47,053 INFO L895 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (let ((.cse2 (>= |ULTIMATE.start_main_~y~0#1| 1))) (and (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|)))) (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (>= |ULTIMATE.start_main_~y~0#1| 0))) (or (and .cse0 .cse1 .cse2) (and .cse0 (= |ULTIMATE.start_main_~a~0#1| 0) .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| 0)))) .cse2 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) [2023-02-17 06:54:47,053 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-17 06:54:47,053 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2023-02-17 06:54:47,053 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-02-17 06:54:47,053 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-02-17 06:54:47,053 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-17 06:54:47,053 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-17 06:54:47,053 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-17 06:54:47,053 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-17 06:54:47,054 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-02-17 06:54:47,054 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-17 06:54:47,056 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:54:47,057 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 06:54:47,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 06:54:47 BoogieIcfgContainer [2023-02-17 06:54:47,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 06:54:47,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 06:54:47,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 06:54:47,069 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 06:54:47,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:54:43" (3/4) ... [2023-02-17 06:54:47,072 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 06:54:47,076 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-17 06:54:47,076 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-17 06:54:47,079 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-17 06:54:47,079 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 06:54:47,079 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 06:54:47,079 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 06:54:47,100 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 06:54:47,106 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 06:54:47,106 INFO L158 Benchmark]: Toolchain (without parser) took 4735.55ms. Allocated memory was 115.3MB in the beginning and 186.6MB in the end (delta: 71.3MB). Free memory was 51.8MB in the beginning and 156.6MB in the end (delta: -104.8MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. [2023-02-17 06:54:47,107 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:54:47,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.74ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 51.6MB in the beginning and 126.3MB in the end (delta: -74.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-17 06:54:47,107 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.10ms. Allocated memory is still 155.2MB. Free memory was 126.3MB in the beginning and 127.8MB in the end (delta: -1.5MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2023-02-17 06:54:47,107 INFO L158 Benchmark]: Boogie Preprocessor took 44.25ms. Allocated memory is still 155.2MB. Free memory was 127.8MB in the beginning and 127.1MB in the end (delta: 730.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:54:47,108 INFO L158 Benchmark]: RCFGBuilder took 333.26ms. Allocated memory is still 155.2MB. Free memory was 126.4MB in the beginning and 115.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 06:54:47,108 INFO L158 Benchmark]: TraceAbstraction took 4050.42ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 115.2MB in the beginning and 71.2MB in the end (delta: 44.0MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. [2023-02-17 06:54:47,108 INFO L158 Benchmark]: Witness Printer took 36.95ms. Allocated memory is still 186.6MB. Free memory was 71.2MB in the beginning and 156.6MB in the end (delta: -85.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-17 06:54:47,109 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.74ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 51.6MB in the beginning and 126.3MB in the end (delta: -74.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.10ms. Allocated memory is still 155.2MB. Free memory was 126.3MB in the beginning and 127.8MB in the end (delta: -1.5MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.25ms. Allocated memory is still 155.2MB. Free memory was 127.8MB in the beginning and 127.1MB in the end (delta: 730.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 333.26ms. Allocated memory is still 155.2MB. Free memory was 126.4MB in the beginning and 115.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4050.42ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 115.2MB in the beginning and 71.2MB in the end (delta: 44.0MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. * Witness Printer took 36.95ms. Allocated memory is still 186.6MB. Free memory was 71.2MB in the beginning and 156.6MB in the end (delta: -85.4MB). 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, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 7, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 135 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 112 mSDsluCounter, 729 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 503 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 612 IncrementalHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 226 mSDtfsCounter, 612 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 447 GetRequests, 369 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=6, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 39 PreInvPairs, 58 NumberOfFragments, 895 HoareAnnotationTreeSize, 39 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 435 ConstructedInterpolants, 3 QuantifiedInterpolants, 1422 SizeOfPredicates, 39 NumberOfNonLiveVariables, 725 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 416/434 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: 47]: Loop Invariant Derived loop invariant: ((x == (q + a) * y + (r + -b) && (((((y <= 2 && y >= 0) && 1 <= r) && y >= 1) && b == y * a) || (((((y <= 2 && y >= 0) && 1 <= r) && y >= 1) && r >= 0) && b == y * a))) && x == q * y + r) || (((((((((y <= 2 && y >= 0) && 1 <= r) && y >= 1) && r >= 0) && b == y * a) && x == q * y + r) || (((((y <= 2 && y >= 0) && 1 <= r) && y >= 1) && b == y * a) && x == q * y + r)) && x == (q + a) * y + (r + -b)) && x == q * y + r) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((y <= 2 && y >= 0) && x == (q + a) * y + (r + -b)) && y >= 1) && b == y * a) && x == q * y + r) || (((((((y <= 2 && a == 0) && y >= 0) && x == (q + a) * y + (r + -b)) && y >= 1) && b == 0) && b == y * a) && x == q * y + r) RESULT: Ultimate proved your program to be correct! [2023-02-17 06:54:47,126 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