./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3dbbec33 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/cohencu-ll_unwindbound1.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 6b537bfce1176c41c6bc215444effcd63b1e343cf1b15ee69a282ebedb146c69 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 11:51:57,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 11:51:57,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 11:51:57,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 11:51:57,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 11:51:57,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 11:51:57,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 11:51:57,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 11:51:57,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 11:51:57,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 11:51:57,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 11:51:57,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 11:51:57,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 11:51:57,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 11:51:57,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 11:51:57,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 11:51:57,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 11:51:57,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 11:51:57,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 11:51:57,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 11:51:57,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 11:51:57,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 11:51:57,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 11:51:57,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 11:51:57,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 11:51:57,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 11:51:57,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 11:51:57,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 11:51:57,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 11:51:57,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 11:51:57,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 11:51:57,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 11:51:57,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 11:51:57,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 11:51:57,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 11:51:57,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 11:51:57,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 11:51:57,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 11:51:57,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 11:51:57,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 11:51:57,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 11:51:57,146 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 11:51:57,181 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 11:51:57,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 11:51:57,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 11:51:57,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 11:51:57,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 11:51:57,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 11:51:57,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 11:51:57,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 11:51:57,183 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 11:51:57,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 11:51:57,183 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 11:51:57,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 11:51:57,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 11:51:57,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 11:51:57,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 11:51:57,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 11:51:57,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 11:51:57,184 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 11:51:57,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 11:51:57,184 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 11:51:57,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 11:51:57,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 11:51:57,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 11:51:57,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 11:51:57,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:51:57,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 11:51:57,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 11:51:57,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 11:51:57,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 11:51:57,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 11:51:57,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 11:51:57,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 11:51:57,185 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 11:51:57,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 11:51:57,186 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 11:51:57,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b537bfce1176c41c6bc215444effcd63b1e343cf1b15ee69a282ebedb146c69 [2023-02-14 11:51:57,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 11:51:57,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 11:51:57,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 11:51:57,448 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 11:51:57,448 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 11:51:57,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2023-02-14 11:51:58,592 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 11:51:58,787 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 11:51:58,788 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2023-02-14 11:51:58,795 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de320568d/4685ebf856974e82a3e25b6338924a00/FLAGcf022e006 [2023-02-14 11:51:58,812 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de320568d/4685ebf856974e82a3e25b6338924a00 [2023-02-14 11:51:58,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 11:51:58,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 11:51:58,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 11:51:58,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 11:51:58,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 11:51:58,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:51:58" (1/1) ... [2023-02-14 11:51:58,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487c002c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:58, skipping insertion in model container [2023-02-14 11:51:58,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:51:58" (1/1) ... [2023-02-14 11:51:58,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 11:51:58,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 11:51:58,961 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/cohencu-ll_unwindbound1.c[588,601] [2023-02-14 11:51:58,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:51:58,987 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 11:51:58,996 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/cohencu-ll_unwindbound1.c[588,601] [2023-02-14 11:51:59,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:51:59,017 INFO L208 MainTranslator]: Completed translation [2023-02-14 11:51:59,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59 WrapperNode [2023-02-14 11:51:59,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 11:51:59,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 11:51:59,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 11:51:59,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 11:51:59,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59" (1/1) ... [2023-02-14 11:51:59,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59" (1/1) ... [2023-02-14 11:51:59,048 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-02-14 11:51:59,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 11:51:59,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 11:51:59,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 11:51:59,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 11:51:59,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59" (1/1) ... [2023-02-14 11:51:59,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59" (1/1) ... [2023-02-14 11:51:59,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59" (1/1) ... [2023-02-14 11:51:59,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59" (1/1) ... [2023-02-14 11:51:59,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59" (1/1) ... [2023-02-14 11:51:59,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59" (1/1) ... [2023-02-14 11:51:59,069 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59" (1/1) ... [2023-02-14 11:51:59,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59" (1/1) ... [2023-02-14 11:51:59,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 11:51:59,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 11:51:59,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 11:51:59,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 11:51:59,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59" (1/1) ... [2023-02-14 11:51:59,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:51:59,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:51:59,122 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) [2023-02-14 11:51:59,129 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 [2023-02-14 11:51:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 11:51:59,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 11:51:59,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 11:51:59,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 11:51:59,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-14 11:51:59,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-14 11:51:59,220 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 11:51:59,222 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 11:51:59,365 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 11:51:59,371 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 11:51:59,371 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 11:51:59,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:51:59 BoogieIcfgContainer [2023-02-14 11:51:59,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 11:51:59,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 11:51:59,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 11:51:59,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 11:51:59,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:51:58" (1/3) ... [2023-02-14 11:51:59,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f77a25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:51:59, skipping insertion in model container [2023-02-14 11:51:59,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:51:59" (2/3) ... [2023-02-14 11:51:59,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f77a25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:51:59, skipping insertion in model container [2023-02-14 11:51:59,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:51:59" (3/3) ... [2023-02-14 11:51:59,390 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound1.c [2023-02-14 11:51:59,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 11:51:59,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 11:51:59,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 11:51:59,475 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;@4ac1d01c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 11:51:59,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 11:51:59,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-14 11:51:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-14 11:51:59,486 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:51:59,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:51:59,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:51:59,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:51:59,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1823967074, now seen corresponding path program 1 times [2023-02-14 11:51:59,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:51:59,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672373749] [2023-02-14 11:51:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:51:59,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:51:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:51:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:51:59,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:51:59,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672373749] [2023-02-14 11:51:59,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672373749] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:51:59,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:51:59,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 11:51:59,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784119756] [2023-02-14 11:51:59,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:51:59,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 11:51:59,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:51:59,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 11:51:59,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 11:51:59,708 INFO L87 Difference]: Start difference. First operand has 26 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:51:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:51:59,760 INFO L93 Difference]: Finished difference Result 50 states and 87 transitions. [2023-02-14 11:51:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 11:51:59,763 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-14 11:51:59,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:51:59,770 INFO L225 Difference]: With dead ends: 50 [2023-02-14 11:51:59,770 INFO L226 Difference]: Without dead ends: 22 [2023-02-14 11:51:59,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 11:51:59,777 INFO L413 NwaCegarLoop]: 37 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, 37 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 [2023-02-14 11:51:59,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:51:59,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-14 11:51:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-14 11:51:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-14 11:51:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2023-02-14 11:51:59,818 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 7 [2023-02-14 11:51:59,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:51:59,819 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2023-02-14 11:51:59,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:51:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2023-02-14 11:51:59,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 11:51:59,820 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:51:59,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:51:59,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 11:51:59,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:51:59,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:51:59,822 INFO L85 PathProgramCache]: Analyzing trace with hash 178926099, now seen corresponding path program 1 times [2023-02-14 11:51:59,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:51:59,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15752760] [2023-02-14 11:51:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:51:59,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:51:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:51:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:51:59,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:51:59,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15752760] [2023-02-14 11:51:59,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15752760] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:51:59,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:51:59,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 11:51:59,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138996115] [2023-02-14 11:51:59,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:51:59,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 11:51:59,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:51:59,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 11:51:59,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 11:51:59,949 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:51:59,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:51:59,971 INFO L93 Difference]: Finished difference Result 36 states and 52 transitions. [2023-02-14 11:51:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 11:51:59,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-14 11:51:59,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:51:59,984 INFO L225 Difference]: With dead ends: 36 [2023-02-14 11:51:59,984 INFO L226 Difference]: Without dead ends: 24 [2023-02-14 11:51:59,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 11:51:59,986 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:51:59,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:52:00,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-14 11:52:00,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-02-14 11:52:00,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-14 11:52:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2023-02-14 11:52:00,007 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 8 [2023-02-14 11:52:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:52:00,007 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2023-02-14 11:52:00,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:52:00,007 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2023-02-14 11:52:00,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 11:52:00,008 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:52:00,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:52:00,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 11:52:00,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:52:00,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:52:00,009 INFO L85 PathProgramCache]: Analyzing trace with hash 180475231, now seen corresponding path program 1 times [2023-02-14 11:52:00,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:52:00,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391303750] [2023-02-14 11:52:00,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:52:00,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:52:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:52:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:52:00,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:52:00,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391303750] [2023-02-14 11:52:00,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391303750] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:52:00,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:52:00,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 11:52:00,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168093489] [2023-02-14 11:52:00,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:52:00,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 11:52:00,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:52:00,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 11:52:00,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 11:52:00,317 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:52:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:52:00,419 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2023-02-14 11:52:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 11:52:00,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-14 11:52:00,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:52:00,421 INFO L225 Difference]: With dead ends: 30 [2023-02-14 11:52:00,421 INFO L226 Difference]: Without dead ends: 28 [2023-02-14 11:52:00,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-14 11:52:00,422 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 11:52:00,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 62 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 11:52:00,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-14 11:52:00,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-14 11:52:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-14 11:52:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-02-14 11:52:00,435 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 8 [2023-02-14 11:52:00,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:52:00,436 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-02-14 11:52:00,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:52:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-02-14 11:52:00,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-14 11:52:00,437 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:52:00,437 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:52:00,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 11:52:00,438 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:52:00,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:52:00,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1275442234, now seen corresponding path program 1 times [2023-02-14 11:52:00,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:52:00,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289982738] [2023-02-14 11:52:00,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:52:00,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:52:00,450 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:52:00,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344451840] [2023-02-14 11:52:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:52:00,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:52:00,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:52:00,454 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) [2023-02-14 11:52:00,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 11:52:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:52:00,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-14 11:52:00,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:52:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:52:00,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:52:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:52:00,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:52:00,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289982738] [2023-02-14 11:52:00,888 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:52:00,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344451840] [2023-02-14 11:52:00,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344451840] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:52:00,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:52:00,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-14 11:52:00,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283674042] [2023-02-14 11:52:00,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:52:00,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 11:52:00,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:52:00,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 11:52:00,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-14 11:52:00,898 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 11:52:01,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:52:01,367 INFO L93 Difference]: Finished difference Result 54 states and 76 transitions. [2023-02-14 11:52:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 11:52:01,367 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2023-02-14 11:52:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:52:01,370 INFO L225 Difference]: With dead ends: 54 [2023-02-14 11:52:01,370 INFO L226 Difference]: Without dead ends: 52 [2023-02-14 11:52:01,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-14 11:52:01,372 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-14 11:52:01,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 71 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-14 11:52:01,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-14 11:52:01,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2023-02-14 11:52:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-14 11:52:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2023-02-14 11:52:01,404 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 13 [2023-02-14 11:52:01,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:52:01,404 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2023-02-14 11:52:01,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 11:52:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2023-02-14 11:52:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 11:52:01,406 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:52:01,406 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:52:01,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 11:52:01,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:52:01,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:52:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:52:01,614 INFO L85 PathProgramCache]: Analyzing trace with hash 427545983, now seen corresponding path program 1 times [2023-02-14 11:52:01,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:52:01,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786082123] [2023-02-14 11:52:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:52:01,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:52:01,626 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:52:01,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632072202] [2023-02-14 11:52:01,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:52:01,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:52:01,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:52:01,628 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) [2023-02-14 11:52:01,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 11:52:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:52:01,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-14 11:52:01,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:52:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 11:52:01,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:52:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 11:52:01,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:52:01,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786082123] [2023-02-14 11:52:01,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:52:01,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632072202] [2023-02-14 11:52:01,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632072202] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:52:01,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:52:01,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-14 11:52:01,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743575292] [2023-02-14 11:52:01,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:52:01,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 11:52:01,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:52:01,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 11:52:01,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-14 11:52:01,893 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-14 11:52:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:52:02,183 INFO L93 Difference]: Finished difference Result 60 states and 83 transitions. [2023-02-14 11:52:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 11:52:02,184 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2023-02-14 11:52:02,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:52:02,185 INFO L225 Difference]: With dead ends: 60 [2023-02-14 11:52:02,185 INFO L226 Difference]: Without dead ends: 58 [2023-02-14 11:52:02,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-14 11:52:02,186 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 11:52:02,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 61 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 11:52:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-14 11:52:02,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2023-02-14 11:52:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-14 11:52:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2023-02-14 11:52:02,215 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 18 [2023-02-14 11:52:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:52:02,215 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2023-02-14 11:52:02,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-14 11:52:02,216 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2023-02-14 11:52:02,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-14 11:52:02,216 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:52:02,217 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:52:02,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-14 11:52:02,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:52:02,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:52:02,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:52:02,423 INFO L85 PathProgramCache]: Analyzing trace with hash 5607206, now seen corresponding path program 1 times [2023-02-14 11:52:02,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:52:02,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037526453] [2023-02-14 11:52:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:52:02,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:52:02,432 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:52:02,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324490061] [2023-02-14 11:52:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:52:02,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:52:02,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:52:02,434 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) [2023-02-14 11:52:02,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 11:52:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:52:02,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-14 11:52:02,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:52:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-14 11:52:02,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:52:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-14 11:52:02,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:52:02,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037526453] [2023-02-14 11:52:02,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:52:02,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324490061] [2023-02-14 11:52:02,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324490061] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:52:02,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:52:02,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-14 11:52:02,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847388700] [2023-02-14 11:52:02,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:52:02,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 11:52:02,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:52:02,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 11:52:02,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-14 11:52:02,900 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-14 11:52:05,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:52:05,262 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2023-02-14 11:52:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 11:52:05,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2023-02-14 11:52:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:52:05,263 INFO L225 Difference]: With dead ends: 74 [2023-02-14 11:52:05,263 INFO L226 Difference]: Without dead ends: 65 [2023-02-14 11:52:05,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-14 11:52:05,265 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-14 11:52:05,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 60 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-14 11:52:05,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-14 11:52:05,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-02-14 11:52:05,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 32 states have (on average 1.125) internal successors, (36), 35 states have internal predecessors, (36), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-14 11:52:05,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2023-02-14 11:52:05,283 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 23 [2023-02-14 11:52:05,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:52:05,283 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2023-02-14 11:52:05,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-14 11:52:05,284 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2023-02-14 11:52:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-14 11:52:05,285 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:52:05,285 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:52:05,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 11:52:05,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:52:05,489 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:52:05,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:52:05,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1172224904, now seen corresponding path program 1 times [2023-02-14 11:52:05,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:52:05,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433196528] [2023-02-14 11:52:05,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:52:05,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:52:05,510 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:52:05,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095673883] [2023-02-14 11:52:05,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:52:05,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:52:05,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:52:05,514 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) [2023-02-14 11:52:05,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 11:52:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 11:52:05,558 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 11:52:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 11:52:05,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 11:52:05,591 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-14 11:52:05,592 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 11:52:05,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 11:52:05,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:52:05,803 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:52:05,806 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 11:52:05,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:52:05 BoogieIcfgContainer [2023-02-14 11:52:05,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 11:52:05,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 11:52:05,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 11:52:05,850 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 11:52:05,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:51:59" (3/4) ... [2023-02-14 11:52:05,853 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-14 11:52:05,905 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 11:52:05,905 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 11:52:05,907 INFO L158 Benchmark]: Toolchain (without parser) took 7090.30ms. Allocated memory was 130.0MB in the beginning and 182.5MB in the end (delta: 52.4MB). Free memory was 85.4MB in the beginning and 131.8MB in the end (delta: -46.4MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2023-02-14 11:52:05,907 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 130.0MB. Free memory was 96.9MB in the beginning and 96.7MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 11:52:05,908 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.79ms. Allocated memory is still 130.0MB. Free memory was 85.4MB in the beginning and 74.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 11:52:05,908 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.01ms. Allocated memory is still 130.0MB. Free memory was 74.4MB in the beginning and 73.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 11:52:05,909 INFO L158 Benchmark]: Boogie Preprocessor took 21.47ms. Allocated memory is still 130.0MB. Free memory was 72.8MB in the beginning and 71.8MB in the end (delta: 963.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 11:52:05,909 INFO L158 Benchmark]: RCFGBuilder took 309.33ms. Allocated memory is still 130.0MB. Free memory was 71.8MB in the beginning and 60.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-14 11:52:05,909 INFO L158 Benchmark]: TraceAbstraction took 6466.06ms. Allocated memory was 130.0MB in the beginning and 182.5MB in the end (delta: 52.4MB). Free memory was 59.7MB in the beginning and 134.9MB in the end (delta: -75.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 11:52:05,910 INFO L158 Benchmark]: Witness Printer took 57.56ms. Allocated memory is still 182.5MB. Free memory was 134.9MB in the beginning and 131.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 11:52:05,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 130.0MB. Free memory was 96.9MB in the beginning and 96.7MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.79ms. Allocated memory is still 130.0MB. Free memory was 85.4MB in the beginning and 74.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.01ms. Allocated memory is still 130.0MB. Free memory was 74.4MB in the beginning and 73.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.47ms. Allocated memory is still 130.0MB. Free memory was 72.8MB in the beginning and 71.8MB in the end (delta: 963.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 309.33ms. Allocated memory is still 130.0MB. Free memory was 71.8MB in the beginning and 60.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6466.06ms. Allocated memory was 130.0MB in the beginning and 182.5MB in the end (delta: 52.4MB). Free memory was 59.7MB in the beginning and 134.9MB in the end (delta: -75.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 57.56ms. Allocated memory is still 182.5MB. Free memory was 134.9MB in the beginning and 131.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [a=1, counter=0, n=0, x=0, y=1, z=6] [L33] EXPR counter++ VAL [a=1, counter=1, counter++=0, n=0, x=0, y=1, z=6] [L33] COND TRUE counter++<1 [L34] CALL __VERIFIER_assert(z == 6 * n + 6) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert(z == 6 * n + 6) VAL [a=1, counter=1, n=0, x=0, y=1, z=6] [L35] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) VAL [a=1, counter=1, n=0, x=0, y=1, z=6] [L36] CALL __VERIFIER_assert(x == n * n * n) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L36] RET __VERIFIER_assert(x == n * n * n) VAL [a=1, counter=1, n=0, x=0, y=1, z=6] [L37] CALL __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) VAL [a=1, counter=1, n=0, x=0, y=1, z=6] [L38] CALL __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L38] RET __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) VAL [a=1, counter=1, n=0, x=0, y=1, z=6] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [a=1, counter=1, n=1, x=1, y=7, z=12] [L33] EXPR counter++ VAL [a=1, counter=2, counter++=1, n=1, x=1, y=7, z=12] [L33] COND FALSE !(counter++<1) [L48] CALL __VERIFIER_assert(z == 6*n + 6) VAL [\old(cond)=1, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L48] RET __VERIFIER_assert(z == 6*n + 6) VAL [a=1, counter=2, n=1, x=1, y=7, z=12] [L49] CALL __VERIFIER_assert(6*a*x - x*z + 12*x == 0) VAL [\old(cond)=0, counter=2] [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=2] [L17] reach_error() VAL [\old(cond)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 7, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 135 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 380 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 216 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 863 IncrementalHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 164 mSDtfsCounter, 863 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=6, InterpolantAutomatonStates: 37, 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, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 626 SizeOfPredicates, 9 NumberOfNonLiveVariables, 207 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 32/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-14 11:52:05,940 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE