./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/egcd-ll_valuebound5.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 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:45:46,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:45:46,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:45:46,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:45:46,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:45:46,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:45:46,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:45:46,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:45:46,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:45:46,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:45:46,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:45:46,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:45:46,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:45:46,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:45:46,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:45:46,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:45:46,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:45:46,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:45:46,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:45:46,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:45:46,141 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:45:46,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:45:46,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:45:46,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:45:46,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:45:46,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:45:46,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:45:46,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:45:46,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:45:46,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:45:46,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:45:46,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:45:46,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:45:46,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:45:46,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:45:46,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:45:46,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:45:46,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:45:46,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:45:46,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:45:46,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:45:46,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:45:46,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 15:45:46,209 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:45:46,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:45:46,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:45:46,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:45:46,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:45:46,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:45:46,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:45:46,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:45:46,215 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:45:46,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:45:46,217 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:45:46,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 15:45:46,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:45:46,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:45:46,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:45:46,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:45:46,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:45:46,218 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:45:46,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:45:46,220 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:45:46,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:45:46,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:45:46,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:45:46,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:45:46,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:45:46,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:45:46,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:45:46,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:45:46,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 15:45:46,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 15:45:46,222 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:45:46,222 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:45:46,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:45:46,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd [2022-07-19 15:45:46,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:45:46,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:45:46,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:45:46,477 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:45:46,477 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:45:46,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2022-07-19 15:45:46,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9100ea570/fb787f0cd80d4a728aaa1d5cc158ccf7/FLAG35cef1826 [2022-07-19 15:45:46,992 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:45:46,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2022-07-19 15:45:47,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9100ea570/fb787f0cd80d4a728aaa1d5cc158ccf7/FLAG35cef1826 [2022-07-19 15:45:47,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9100ea570/fb787f0cd80d4a728aaa1d5cc158ccf7 [2022-07-19 15:45:47,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:45:47,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:45:47,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:45:47,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:45:47,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:45:47,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:45:47" (1/1) ... [2022-07-19 15:45:47,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d71c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47, skipping insertion in model container [2022-07-19 15:45:47,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:45:47" (1/1) ... [2022-07-19 15:45:47,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:45:47,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:45:47,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2022-07-19 15:45:47,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:45:47,642 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:45:47,652 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2022-07-19 15:45:47,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:45:47,669 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:45:47,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47 WrapperNode [2022-07-19 15:45:47,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:45:47,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:45:47,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:45:47,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:45:47,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47" (1/1) ... [2022-07-19 15:45:47,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47" (1/1) ... [2022-07-19 15:45:47,704 INFO L137 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-07-19 15:45:47,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:45:47,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:45:47,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:45:47,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:45:47,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47" (1/1) ... [2022-07-19 15:45:47,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47" (1/1) ... [2022-07-19 15:45:47,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47" (1/1) ... [2022-07-19 15:45:47,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47" (1/1) ... [2022-07-19 15:45:47,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47" (1/1) ... [2022-07-19 15:45:47,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47" (1/1) ... [2022-07-19 15:45:47,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47" (1/1) ... [2022-07-19 15:45:47,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:45:47,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:45:47,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:45:47,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:45:47,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47" (1/1) ... [2022-07-19 15:45:47,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:45:47,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:45:47,764 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) [2022-07-19 15:45:47,765 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 [2022-07-19 15:45:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:45:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 15:45:47,801 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 15:45:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 15:45:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:45:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:45:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 15:45:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 15:45:47,851 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:45:47,852 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:45:47,978 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:45:47,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:45:47,983 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 15:45:47,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:45:47 BoogieIcfgContainer [2022-07-19 15:45:47,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:45:47,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:45:47,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:45:47,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:45:47,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:45:47" (1/3) ... [2022-07-19 15:45:47,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9e0f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:45:47, skipping insertion in model container [2022-07-19 15:45:47,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:45:47" (2/3) ... [2022-07-19 15:45:47,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9e0f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:45:47, skipping insertion in model container [2022-07-19 15:45:47,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:45:47" (3/3) ... [2022-07-19 15:45:47,992 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.c [2022-07-19 15:45:48,022 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:45:48,022 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:45:48,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:45:48,119 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55566035, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3ee2e470 [2022-07-19 15:45:48,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:45:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-19 15:45:48,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-19 15:45:48,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:45:48,134 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:45:48,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:45:48,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:45:48,139 INFO L85 PathProgramCache]: Analyzing trace with hash 516392259, now seen corresponding path program 1 times [2022-07-19 15:45:48,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:45:48,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117776457] [2022-07-19 15:45:48,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:48,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:45:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:48,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 15:45:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:48,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 15:45:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:48,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 15:45:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:48,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 15:45:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 15:45:48,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:45:48,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117776457] [2022-07-19 15:45:48,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117776457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:45:48,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:45:48,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 15:45:48,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505344179] [2022-07-19 15:45:48,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:45:48,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 15:45:48,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:45:48,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 15:45:48,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:45:48,414 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 15:45:48,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:45:48,433 INFO L93 Difference]: Finished difference Result 61 states and 99 transitions. [2022-07-19 15:45:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 15:45:48,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-07-19 15:45:48,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:45:48,442 INFO L225 Difference]: With dead ends: 61 [2022-07-19 15:45:48,443 INFO L226 Difference]: Without dead ends: 28 [2022-07-19 15:45:48,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:45:48,449 INFO L413 NwaCegarLoop]: 42 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, 42 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 [2022-07-19 15:45:48,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:45:48,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-19 15:45:48,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-19 15:45:48,506 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) [2022-07-19 15:45:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2022-07-19 15:45:48,513 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 29 [2022-07-19 15:45:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:45:48,527 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2022-07-19 15:45:48,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 15:45:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2022-07-19 15:45:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-19 15:45:48,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:45:48,530 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:45:48,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 15:45:48,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:45:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:45:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash 501437177, now seen corresponding path program 1 times [2022-07-19 15:45:48,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:45:48,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138287629] [2022-07-19 15:45:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:48,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:45:48,554 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:45:48,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29931103] [2022-07-19 15:45:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:48,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:48,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:45:48,557 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) [2022-07-19 15:45:48,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 15:45:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:48,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 15:45:48,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:45:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 15:45:48,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:45:48,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:45:48,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138287629] [2022-07-19 15:45:48,754 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:45:48,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29931103] [2022-07-19 15:45:48,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29931103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:45:48,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:45:48,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 15:45:48,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427916539] [2022-07-19 15:45:48,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:45:48,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 15:45:48,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:45:48,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 15:45:48,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 15:45:48,757 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 15:45:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:45:48,825 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2022-07-19 15:45:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 15:45:48,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-07-19 15:45:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:45:48,827 INFO L225 Difference]: With dead ends: 44 [2022-07-19 15:45:48,827 INFO L226 Difference]: Without dead ends: 42 [2022-07-19 15:45:48,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:45:48,829 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:45:48,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 127 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:45:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-19 15:45:48,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-07-19 15:45:48,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-19 15:45:48,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2022-07-19 15:45:48,840 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 29 [2022-07-19 15:45:48,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:45:48,840 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2022-07-19 15:45:48,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 15:45:48,841 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2022-07-19 15:45:48,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 15:45:48,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:45:48,842 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:45:48,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 15:45:49,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:49,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:45:49,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:45:49,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1017640517, now seen corresponding path program 1 times [2022-07-19 15:45:49,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:45:49,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650788119] [2022-07-19 15:45:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:49,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:45:49,084 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:45:49,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605994300] [2022-07-19 15:45:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:49,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:49,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:45:49,087 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) [2022-07-19 15:45:49,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 15:45:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:49,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-19 15:45:49,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:45:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 15:45:49,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:45:49,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:45:49,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650788119] [2022-07-19 15:45:49,324 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:45:49,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605994300] [2022-07-19 15:45:49,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605994300] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 15:45:49,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 15:45:49,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-07-19 15:45:49,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865385811] [2022-07-19 15:45:49,327 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 15:45:49,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 15:45:49,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:45:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 15:45:49,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 15:45:49,329 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-19 15:45:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:45:49,506 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2022-07-19 15:45:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 15:45:49,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2022-07-19 15:45:49,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:45:49,513 INFO L225 Difference]: With dead ends: 66 [2022-07-19 15:45:49,513 INFO L226 Difference]: Without dead ends: 64 [2022-07-19 15:45:49,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 15:45:49,521 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:45:49,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 149 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:45:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-19 15:45:49,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-07-19 15:45:49,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-19 15:45:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2022-07-19 15:45:49,542 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 34 [2022-07-19 15:45:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:45:49,542 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2022-07-19 15:45:49,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-19 15:45:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2022-07-19 15:45:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 15:45:49,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:45:49,544 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:45:49,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 15:45:49,767 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,SelfDestructingSolverStorable2 [2022-07-19 15:45:49,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:45:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:45:49,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1133401081, now seen corresponding path program 1 times [2022-07-19 15:45:49,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:45:49,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044205523] [2022-07-19 15:45:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:49,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:45:49,783 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:45:49,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257020843] [2022-07-19 15:45:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:49,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:49,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:45:49,785 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) [2022-07-19 15:45:49,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 15:45:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:49,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 15:45:49,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:45:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 15:45:50,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:45:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 15:45:50,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:45:50,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044205523] [2022-07-19 15:45:50,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:45:50,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257020843] [2022-07-19 15:45:50,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257020843] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 15:45:50,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 15:45:50,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-07-19 15:45:50,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363461197] [2022-07-19 15:45:50,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:45:50,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 15:45:50,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:45:50,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 15:45:50,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-19 15:45:50,172 INFO L87 Difference]: Start difference. First operand 57 states and 83 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 15:45:50,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:45:50,252 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2022-07-19 15:45:50,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 15:45:50,252 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2022-07-19 15:45:50,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:45:50,255 INFO L225 Difference]: With dead ends: 64 [2022-07-19 15:45:50,255 INFO L226 Difference]: Without dead ends: 60 [2022-07-19 15:45:50,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-19 15:45:50,259 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:45:50,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 121 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:45:50,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-19 15:45:50,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-07-19 15:45:50,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 15:45:50,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2022-07-19 15:45:50,283 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 39 [2022-07-19 15:45:50,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:45:50,283 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2022-07-19 15:45:50,284 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 15:45:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2022-07-19 15:45:50,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 15:45:50,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:45:50,285 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2022-07-19 15:45:50,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 15:45:50,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:50,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:45:50,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:45:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1954831506, now seen corresponding path program 1 times [2022-07-19 15:45:50,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:45:50,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013572376] [2022-07-19 15:45:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:50,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:45:50,509 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:45:50,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956194842] [2022-07-19 15:45:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:50,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:50,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:45:50,511 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) [2022-07-19 15:45:50,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 15:45:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:50,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 15:45:50,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:45:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 15:45:50,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:45:50,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:45:50,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013572376] [2022-07-19 15:45:50,586 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:45:50,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956194842] [2022-07-19 15:45:50,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956194842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:45:50,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:45:50,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 15:45:50,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859488441] [2022-07-19 15:45:50,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:45:50,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 15:45:50,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:45:50,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 15:45:50,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 15:45:50,589 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 15:45:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:45:50,630 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2022-07-19 15:45:50,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 15:45:50,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2022-07-19 15:45:50,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:45:50,632 INFO L225 Difference]: With dead ends: 66 [2022-07-19 15:45:50,632 INFO L226 Difference]: Without dead ends: 64 [2022-07-19 15:45:50,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:45:50,633 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:45:50,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:45:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-19 15:45:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-07-19 15:45:50,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 15:45:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2022-07-19 15:45:50,643 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 45 [2022-07-19 15:45:50,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:45:50,643 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2022-07-19 15:45:50,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 15:45:50,644 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2022-07-19 15:45:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-19 15:45:50,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:45:50,645 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:45:50,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 15:45:50,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:50,867 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:45:50,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:45:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1265228631, now seen corresponding path program 1 times [2022-07-19 15:45:50,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:45:50,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53745658] [2022-07-19 15:45:50,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:50,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:45:50,880 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:45:50,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069480911] [2022-07-19 15:45:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:50,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:50,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:45:50,886 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) [2022-07-19 15:45:50,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 15:45:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:50,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 15:45:50,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:45:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 15:45:51,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:45:51,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:45:51,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53745658] [2022-07-19 15:45:51,015 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:45:51,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069480911] [2022-07-19 15:45:51,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069480911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:45:51,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:45:51,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 15:45:51,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126767077] [2022-07-19 15:45:51,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:45:51,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 15:45:51,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:45:51,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 15:45:51,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 15:45:51,018 INFO L87 Difference]: Start difference. First operand 64 states and 86 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 15:45:51,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:45:51,080 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2022-07-19 15:45:51,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 15:45:51,080 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-07-19 15:45:51,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:45:51,081 INFO L225 Difference]: With dead ends: 80 [2022-07-19 15:45:51,081 INFO L226 Difference]: Without dead ends: 78 [2022-07-19 15:45:51,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:45:51,082 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:45:51,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:45:51,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-19 15:45:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2022-07-19 15:45:51,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-19 15:45:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2022-07-19 15:45:51,092 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2022-07-19 15:45:51,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:45:51,092 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2022-07-19 15:45:51,093 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 15:45:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2022-07-19 15:45:51,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 15:45:51,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:45:51,094 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2022-07-19 15:45:51,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 15:45:51,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:51,310 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:45:51,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:45:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1617953190, now seen corresponding path program 1 times [2022-07-19 15:45:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:45:51,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895305167] [2022-07-19 15:45:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:45:51,329 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:45:51,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604582310] [2022-07-19 15:45:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:51,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:51,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:45:51,338 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) [2022-07-19 15:45:51,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 15:45:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:51,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 15:45:51,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:45:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 15:45:51,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:45:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 15:45:51,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:45:51,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895305167] [2022-07-19 15:45:51,526 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:45:51,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604582310] [2022-07-19 15:45:51,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604582310] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:45:51,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:45:51,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-07-19 15:45:51,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64281980] [2022-07-19 15:45:51,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:45:51,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 15:45:51,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:45:51,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 15:45:51,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 15:45:51,529 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 15:45:51,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:45:51,671 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2022-07-19 15:45:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 15:45:51,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2022-07-19 15:45:51,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:45:51,675 INFO L225 Difference]: With dead ends: 84 [2022-07-19 15:45:51,675 INFO L226 Difference]: Without dead ends: 80 [2022-07-19 15:45:51,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-19 15:45:51,678 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:45:51,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 90 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:45:51,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-19 15:45:51,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-07-19 15:45:51,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-19 15:45:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2022-07-19 15:45:51,697 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 50 [2022-07-19 15:45:51,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:45:51,697 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2022-07-19 15:45:51,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 15:45:51,697 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2022-07-19 15:45:51,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-19 15:45:51,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:45:51,706 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:45:51,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 15:45:51,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:51,906 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:45:51,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:45:51,907 INFO L85 PathProgramCache]: Analyzing trace with hash 860577929, now seen corresponding path program 1 times [2022-07-19 15:45:51,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:45:51,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258995825] [2022-07-19 15:45:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:51,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:45:51,918 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:45:51,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828943575] [2022-07-19 15:45:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:51,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:51,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:45:51,919 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) [2022-07-19 15:45:51,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 15:45:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:51,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-19 15:45:51,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:45:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 15:45:52,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:45:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 15:45:52,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:45:52,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258995825] [2022-07-19 15:45:52,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:45:52,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828943575] [2022-07-19 15:45:52,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828943575] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:45:52,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:45:52,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2022-07-19 15:45:52,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995655776] [2022-07-19 15:45:52,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:45:52,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 15:45:52,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:45:52,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 15:45:52,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-07-19 15:45:52,297 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 15:45:52,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:45:52,844 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2022-07-19 15:45:52,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 15:45:52,845 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 52 [2022-07-19 15:45:52,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:45:52,846 INFO L225 Difference]: With dead ends: 106 [2022-07-19 15:45:52,846 INFO L226 Difference]: Without dead ends: 99 [2022-07-19 15:45:52,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-07-19 15:45:52,847 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 15:45:52,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 153 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 15:45:52,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-19 15:45:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2022-07-19 15:45:52,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 15:45:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2022-07-19 15:45:52,861 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 52 [2022-07-19 15:45:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:45:52,862 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2022-07-19 15:45:52,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 15:45:52,862 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2022-07-19 15:45:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 15:45:52,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:45:52,863 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:45:52,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 15:45:53,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:53,080 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:45:53,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:45:53,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1236716699, now seen corresponding path program 1 times [2022-07-19 15:45:53,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:45:53,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038198368] [2022-07-19 15:45:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:53,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:45:53,097 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:45:53,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360109502] [2022-07-19 15:45:53,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:45:53,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:45:53,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:45:53,104 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:45:53,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 15:45:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:45:53,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 15:45:53,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:45:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 15:45:53,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:45:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-19 15:45:53,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:45:53,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038198368] [2022-07-19 15:45:53,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:45:53,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360109502] [2022-07-19 15:45:53,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360109502] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 15:45:53,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 15:45:53,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-07-19 15:45:53,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108965392] [2022-07-19 15:45:53,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:45:53,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 15:45:53,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:45:53,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 15:45:53,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 15:45:53,420 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 15:45:53,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:45:53,471 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2022-07-19 15:45:53,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 15:45:53,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 15:45:53,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:45:53,472 INFO L225 Difference]: With dead ends: 84 [2022-07-19 15:45:53,472 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 15:45:53,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-19 15:45:53,473 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:45:53,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 92 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:45:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 15:45:53,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 15:45:53,474 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) [2022-07-19 15:45:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 15:45:53,475 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2022-07-19 15:45:53,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:45:53,475 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 15:45:53,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 15:45:53,475 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 15:45:53,475 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 15:45:53,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 15:45:53,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 15:45:53,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-19 15:45:53,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 15:46:01,630 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-07-19 15:46:01,630 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 15:46:01,630 INFO L902 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2022-07-19 15:46:01,631 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~x~0#1|) [2022-07-19 15:46:01,631 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (and (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|)) [2022-07-19 15:46:01,631 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-07-19 15:46:01,631 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2022-07-19 15:46:01,631 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-07-19 15:46:01,631 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-07-19 15:46:01,631 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 15:46:01,631 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 15:46:01,631 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 15:46:01,632 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-07-19 15:46:01,632 INFO L899 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2022-07-19 15:46:01,632 INFO L902 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2022-07-19 15:46:01,632 INFO L902 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: true [2022-07-19 15:46:01,632 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse2 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (<= 1 |ULTIMATE.start_main_~x~0#1|))) (or (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| .cse2 .cse3)) .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= (+ .cse2 .cse3) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 (= |ULTIMATE.start_main_~s~0#1| 1)))) [2022-07-19 15:46:01,632 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-07-19 15:46:01,632 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-07-19 15:46:01,632 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2022-07-19 15:46:01,632 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-07-19 15:46:01,632 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-07-19 15:46:01,632 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-07-19 15:46:01,632 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-07-19 15:46:01,632 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-07-19 15:46:01,633 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-07-19 15:46:01,633 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-07-19 15:46:01,633 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-07-19 15:46:01,633 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-07-19 15:46:01,633 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-07-19 15:46:01,633 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-07-19 15:46:01,633 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-07-19 15:46:01,637 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:46:01,639 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 15:46:01,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 03:46:01 BoogieIcfgContainer [2022-07-19 15:46:01,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 15:46:01,657 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 15:46:01,657 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 15:46:01,658 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 15:46:01,658 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:45:47" (3/4) ... [2022-07-19 15:46:01,661 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 15:46:01,667 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-19 15:46:01,668 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-19 15:46:01,671 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-19 15:46:01,672 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 15:46:01,672 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 15:46:01,672 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 15:46:01,707 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 15:46:01,708 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 15:46:01,709 INFO L158 Benchmark]: Toolchain (without parser) took 14299.00ms. Allocated memory was 98.6MB in the beginning and 148.9MB in the end (delta: 50.3MB). Free memory was 63.5MB in the beginning and 113.8MB in the end (delta: -50.3MB). Peak memory consumption was 47.4kB. Max. memory is 16.1GB. [2022-07-19 15:46:01,709 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory was 68.1MB in the beginning and 68.1MB in the end (delta: 24.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:46:01,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.76ms. Allocated memory is still 98.6MB. Free memory was 63.3MB in the beginning and 73.7MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 15:46:01,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.15ms. Allocated memory is still 98.6MB. Free memory was 73.7MB in the beginning and 72.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:46:01,710 INFO L158 Benchmark]: Boogie Preprocessor took 30.42ms. Allocated memory is still 98.6MB. Free memory was 72.0MB in the beginning and 71.2MB in the end (delta: 766.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:46:01,711 INFO L158 Benchmark]: RCFGBuilder took 248.75ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 61.3MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 15:46:01,712 INFO L158 Benchmark]: TraceAbstraction took 13670.18ms. Allocated memory was 98.6MB in the beginning and 148.9MB in the end (delta: 50.3MB). Free memory was 60.8MB in the beginning and 117.0MB in the end (delta: -56.2MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. [2022-07-19 15:46:01,712 INFO L158 Benchmark]: Witness Printer took 50.53ms. Allocated memory is still 148.9MB. Free memory was 117.0MB in the beginning and 113.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 15:46:01,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory was 68.1MB in the beginning and 68.1MB in the end (delta: 24.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.76ms. Allocated memory is still 98.6MB. Free memory was 63.3MB in the beginning and 73.7MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.15ms. Allocated memory is still 98.6MB. Free memory was 73.7MB in the beginning and 72.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.42ms. Allocated memory is still 98.6MB. Free memory was 72.0MB in the beginning and 71.2MB in the end (delta: 766.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 248.75ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 61.3MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 13670.18ms. Allocated memory was 98.6MB in the beginning and 148.9MB in the end (delta: 50.3MB). Free memory was 60.8MB in the beginning and 117.0MB in the end (delta: -56.2MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. * Witness Printer took 50.53ms. Allocated memory is still 148.9MB. Free memory was 117.0MB in the beginning and 113.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.6s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 88 mSDsluCounter, 1024 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 709 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 723 IncrementalHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 315 mSDtfsCounter, 723 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 584 GetRequests, 513 SyntacticMatches, 9 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=8, InterpolantAutomatonStates: 52, 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, 9 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 53 PreInvPairs, 88 NumberOfFragments, 327 HoareAnnotationTreeSize, 53 FomulaSimplifications, 416 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 1892 FormulaSimplificationTreeSizeReductionInter, 7.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 390 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 583 ConstructedInterpolants, 0 QuantifiedInterpolants, 1723 SizeOfPredicates, 19 NumberOfNonLiveVariables, 959 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 625/666 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: 35]: Loop Invariant Derived loop invariant: ((p * s == q * r + 1 && r * y + b + p * x == a + s * y + q * x) && 1 <= x) && r * y + p * x == a - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-19 15:46:01,744 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