./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/num_conversion_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 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/bitvector/num_conversion_2.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 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 10:21:49,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:21:49,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:21:49,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:21:49,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:21:49,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:21:49,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:21:49,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:21:49,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:21:49,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:21:49,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:21:49,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:21:49,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:21:49,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:21:49,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:21:49,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:21:49,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:21:49,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:21:49,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:21:49,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:21:49,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:21:49,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:21:49,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:21:49,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:21:49,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:21:49,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:21:49,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:21:49,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:21:49,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:21:49,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:21:49,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:21:49,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:21:49,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:21:49,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:21:49,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:21:49,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:21:49,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:21:49,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:21:49,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:21:49,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:21:49,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:21:49,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:21:49,604 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:21:49,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:21:49,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:21:49,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:21:49,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:21:49,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:21:49,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:21:49,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:21:49,609 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:21:49,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:21:49,610 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:21:49,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:21:49,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:21:49,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:21:49,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:21:49,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:21:49,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:21:49,611 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:21:49,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:21:49,611 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:21:49,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:21:49,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:21:49,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:21:49,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:21:49,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:21:49,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:21:49,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:21:49,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:21:49,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:21:49,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:21:49,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:21:49,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:21:49,613 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:21:49,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:21:49,613 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:21:49,613 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2023-02-15 10:21:49,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:21:49,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:21:49,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:21:49,797 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:21:49,798 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:21:49,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-15 10:21:50,769 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:21:50,916 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:21:50,917 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-15 10:21:50,922 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6fa2701f/14b290ce5bb84a979debe9f47d059c42/FLAG9880d946b [2023-02-15 10:21:50,932 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6fa2701f/14b290ce5bb84a979debe9f47d059c42 [2023-02-15 10:21:50,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:21:50,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:21:50,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:21:50,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:21:50,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:21:50,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:21:50" (1/1) ... [2023-02-15 10:21:50,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb83b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:50, skipping insertion in model container [2023-02-15 10:21:50,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:21:50" (1/1) ... [2023-02-15 10:21:50,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:21:50,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:21:51,035 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2023-02-15 10:21:51,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:21:51,050 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:21:51,057 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2023-02-15 10:21:51,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:21:51,068 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:21:51,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51 WrapperNode [2023-02-15 10:21:51,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:21:51,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:21:51,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:21:51,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:21:51,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51" (1/1) ... [2023-02-15 10:21:51,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51" (1/1) ... [2023-02-15 10:21:51,090 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-02-15 10:21:51,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:21:51,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:21:51,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:21:51,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:21:51,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51" (1/1) ... [2023-02-15 10:21:51,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51" (1/1) ... [2023-02-15 10:21:51,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51" (1/1) ... [2023-02-15 10:21:51,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51" (1/1) ... [2023-02-15 10:21:51,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51" (1/1) ... [2023-02-15 10:21:51,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51" (1/1) ... [2023-02-15 10:21:51,102 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51" (1/1) ... [2023-02-15 10:21:51,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51" (1/1) ... [2023-02-15 10:21:51,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:21:51,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:21:51,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:21:51,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:21:51,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51" (1/1) ... [2023-02-15 10:21:51,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:21:51,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:21:51,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 10:21:51,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 10:21:51,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:21:51,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:21:51,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:21:51,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:21:51,221 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:21:51,232 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:21:51,319 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:21:51,323 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:21:51,324 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 10:21:51,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:21:51 BoogieIcfgContainer [2023-02-15 10:21:51,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:21:51,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:21:51,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:21:51,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:21:51,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:21:50" (1/3) ... [2023-02-15 10:21:51,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158f3614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:21:51, skipping insertion in model container [2023-02-15 10:21:51,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:51" (2/3) ... [2023-02-15 10:21:51,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158f3614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:21:51, skipping insertion in model container [2023-02-15 10:21:51,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:21:51" (3/3) ... [2023-02-15 10:21:51,331 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2023-02-15 10:21:51,343 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:21:51,347 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 10:21:51,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:21:51,397 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4cc5751, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:21:51,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 10:21:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 10:21:51,407 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:21:51,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 10:21:51,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:21:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:21:51,413 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2023-02-15 10:21:51,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:21:51,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189655419] [2023-02-15 10:21:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:21:51,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:21:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:21:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:51,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:21:51,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189655419] [2023-02-15 10:21:51,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189655419] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:21:51,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:21:51,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 10:21:51,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108284310] [2023-02-15 10:21:51,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:21:51,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 10:21:51,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:21:51,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 10:21:51,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:21:51,601 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:21:51,611 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-02-15 10:21:51,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 10:21:51,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 10:21:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:21:51,618 INFO L225 Difference]: With dead ends: 21 [2023-02-15 10:21:51,618 INFO L226 Difference]: Without dead ends: 9 [2023-02-15 10:21:51,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:21:51,624 INFO L413 NwaCegarLoop]: 14 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, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:21:51,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:21:51,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-15 10:21:51,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-15 10:21:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-02-15 10:21:51,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-02-15 10:21:51,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:21:51,646 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-02-15 10:21:51,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-02-15 10:21:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 10:21:51,647 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:21:51,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 10:21:51,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 10:21:51,648 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:21:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:21:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2023-02-15 10:21:51,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:21:51,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092187431] [2023-02-15 10:21:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:21:51,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:21:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:21:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:51,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:21:51,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092187431] [2023-02-15 10:21:51,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092187431] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:21:51,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:21:51,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:21:51,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666519123] [2023-02-15 10:21:51,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:21:51,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:21:51,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:21:51,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:21:51,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:21:51,735 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:51,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:21:51,745 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-02-15 10:21:51,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:21:51,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 10:21:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:21:51,746 INFO L225 Difference]: With dead ends: 16 [2023-02-15 10:21:51,746 INFO L226 Difference]: Without dead ends: 12 [2023-02-15 10:21:51,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:21:51,747 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:21:51,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:21:51,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-15 10:21:51,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-02-15 10:21:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-15 10:21:51,752 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-02-15 10:21:51,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:21:51,752 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-15 10:21:51,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-15 10:21:51,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 10:21:51,753 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:21:51,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:21:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 10:21:51,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:21:51,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:21:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2023-02-15 10:21:51,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:21:51,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479553366] [2023-02-15 10:21:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:21:51,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:21:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:21:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:51,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:21:51,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479553366] [2023-02-15 10:21:51,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479553366] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:21:51,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594558186] [2023-02-15 10:21:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:21:51,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:21:51,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:21:51,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:21:51,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 10:21:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:21:51,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 10:21:51,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:21:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:51,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:21:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:52,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594558186] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:21:52,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:21:52,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 8 [2023-02-15 10:21:52,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525510209] [2023-02-15 10:21:52,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:21:52,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 10:21:52,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:21:52,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 10:21:52,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-02-15 10:21:52,025 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:21:52,083 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-02-15 10:21:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 10:21:52,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 10:21:52,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:21:52,084 INFO L225 Difference]: With dead ends: 23 [2023-02-15 10:21:52,084 INFO L226 Difference]: Without dead ends: 19 [2023-02-15 10:21:52,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:21:52,093 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:21:52,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:21:52,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-15 10:21:52,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-15 10:21:52,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-15 10:21:52,098 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2023-02-15 10:21:52,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:21:52,098 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-15 10:21:52,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-15 10:21:52,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 10:21:52,098 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:21:52,099 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-15 10:21:52,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 10:21:52,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:21:52,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:21:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:21:52,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2023-02-15 10:21:52,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:21:52,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136348484] [2023-02-15 10:21:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:21:52,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:21:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:21:52,535 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:52,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:21:52,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136348484] [2023-02-15 10:21:52,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136348484] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:21:52,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903734433] [2023-02-15 10:21:52,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 10:21:52,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:21:52,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:21:52,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:21:52,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 10:21:52,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 10:21:52,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:21:52,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 10:21:52,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:21:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:52,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:21:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:52,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903734433] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:21:52,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:21:52,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2023-02-15 10:21:52,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384673722] [2023-02-15 10:21:52,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:21:52,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 10:21:52,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:21:52,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 10:21:52,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2023-02-15 10:21:52,830 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:53,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:21:53,092 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2023-02-15 10:21:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 10:21:53,092 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-15 10:21:53,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:21:53,093 INFO L225 Difference]: With dead ends: 41 [2023-02-15 10:21:53,093 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 10:21:53,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2023-02-15 10:21:53,095 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:21:53,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 96 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:21:53,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 10:21:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-15 10:21:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2023-02-15 10:21:53,101 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 18 [2023-02-15 10:21:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:21:53,101 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2023-02-15 10:21:53,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:53,101 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2023-02-15 10:21:53,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 10:21:53,102 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:21:53,102 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2023-02-15 10:21:53,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 10:21:53,308 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,SelfDestructingSolverStorable3 [2023-02-15 10:21:53,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:21:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:21:53,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2023-02-15 10:21:53,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:21:53,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144055283] [2023-02-15 10:21:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:21:53,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:21:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 10:21:53,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 10:21:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 10:21:53,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 10:21:53,378 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 10:21:53,379 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 10:21:53,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 10:21:53,382 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-02-15 10:21:53,384 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 10:21:53,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 10:21:53 BoogieIcfgContainer [2023-02-15 10:21:53,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 10:21:53,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 10:21:53,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 10:21:53,402 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 10:21:53,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:21:51" (3/4) ... [2023-02-15 10:21:53,405 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 10:21:53,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 10:21:53,405 INFO L158 Benchmark]: Toolchain (without parser) took 2470.22ms. Allocated memory is still 182.5MB. Free memory was 139.9MB in the beginning and 135.6MB in the end (delta: 4.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2023-02-15 10:21:53,406 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 57.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 10:21:53,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 133.10ms. Allocated memory is still 182.5MB. Free memory was 139.9MB in the beginning and 129.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 10:21:53,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.42ms. Allocated memory is still 182.5MB. Free memory was 129.4MB in the beginning and 128.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 10:21:53,406 INFO L158 Benchmark]: Boogie Preprocessor took 12.52ms. Allocated memory is still 182.5MB. Free memory was 128.1MB in the beginning and 127.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 10:21:53,407 INFO L158 Benchmark]: RCFGBuilder took 220.98ms. Allocated memory is still 182.5MB. Free memory was 127.1MB in the beginning and 117.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 10:21:53,407 INFO L158 Benchmark]: TraceAbstraction took 2075.12ms. Allocated memory is still 182.5MB. Free memory was 116.8MB in the beginning and 136.7MB in the end (delta: -19.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 10:21:53,407 INFO L158 Benchmark]: Witness Printer took 2.67ms. Allocated memory is still 182.5MB. Free memory was 136.7MB in the beginning and 135.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 10:21:53,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 57.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 133.10ms. Allocated memory is still 182.5MB. Free memory was 139.9MB in the beginning and 129.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.42ms. Allocated memory is still 182.5MB. Free memory was 129.4MB in the beginning and 128.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.52ms. Allocated memory is still 182.5MB. Free memory was 128.1MB in the beginning and 127.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 220.98ms. Allocated memory is still 182.5MB. Free memory was 127.1MB in the beginning and 117.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2075.12ms. Allocated memory is still 182.5MB. Free memory was 116.8MB in the beginning and 136.7MB in the end (delta: -19.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.67ms. Allocated memory is still 182.5MB. Free memory was 136.7MB in the beginning and 135.6MB in the end (delta: 1.0MB). There was no memory consumed. 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 - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 31, overapproximation of bitwiseAnd at line 32. Possible FailurePath: [L24] unsigned char x = __VERIFIER_nondet_uchar(); [L25] unsigned char y; [L26] unsigned char c; [L28] y = 0 [L29] c = 0 VAL [c=0, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=0, i=2, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=0, i=2, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=1, i=2, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=1, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=1, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=2, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=2, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=2, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=3, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=3, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=3, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=4, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=4, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=4, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=5, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=5, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=5, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=6, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=6, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=6, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=7, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=7, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=7, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=8, i=1, x=4, y=0] [L30] COND FALSE !(c < (unsigned char)8) VAL [bit=0, c=8, i=1, x=4, y=0] [L38] CALL __VERIFIER_assert(x == y) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 153 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 47 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 8 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/69 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-02-15 10:21:53,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/bitvector/num_conversion_2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 10:21:55,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:21:55,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:21:55,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:21:55,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:21:55,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:21:55,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:21:55,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:21:55,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:21:55,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:21:55,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:21:55,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:21:55,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:21:55,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:21:55,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:21:55,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:21:55,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:21:55,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:21:55,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:21:55,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:21:55,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:21:55,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:21:55,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:21:55,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:21:55,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:21:55,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:21:55,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:21:55,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:21:55,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:21:55,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:21:55,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:21:55,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:21:55,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:21:55,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:21:55,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:21:55,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:21:55,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:21:55,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:21:55,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:21:55,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:21:55,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:21:55,300 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-15 10:21:55,322 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:21:55,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:21:55,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:21:55,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:21:55,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:21:55,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:21:55,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:21:55,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:21:55,325 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:21:55,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:21:55,326 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:21:55,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:21:55,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:21:55,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:21:55,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:21:55,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:21:55,327 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 10:21:55,327 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 10:21:55,327 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 10:21:55,327 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:21:55,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:21:55,327 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:21:55,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:21:55,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:21:55,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:21:55,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:21:55,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:21:55,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:21:55,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:21:55,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:21:55,329 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 10:21:55,329 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 10:21:55,329 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:21:55,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:21:55,329 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:21:55,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:21:55,330 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 10:21:55,330 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:21:55,330 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2023-02-15 10:21:55,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:21:55,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:21:55,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:21:55,578 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:21:55,578 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:21:55,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-15 10:21:56,537 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:21:56,738 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:21:56,739 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-15 10:21:56,742 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b50c6be6/4c7e1400f5e747daad5aeb035d59c8e9/FLAG26918c1ab [2023-02-15 10:21:56,753 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b50c6be6/4c7e1400f5e747daad5aeb035d59c8e9 [2023-02-15 10:21:56,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:21:56,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:21:56,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:21:56,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:21:56,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:21:56,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cab7ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56, skipping insertion in model container [2023-02-15 10:21:56,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:21:56,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:21:56,864 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2023-02-15 10:21:56,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:21:56,887 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:21:56,896 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2023-02-15 10:21:56,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:21:56,911 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:21:56,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56 WrapperNode [2023-02-15 10:21:56,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:21:56,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:21:56,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:21:56,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:21:56,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,931 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-02-15 10:21:56,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:21:56,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:21:56,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:21:56,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:21:56,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,952 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:21:56,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:21:56,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:21:56,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:21:56,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56" (1/1) ... [2023-02-15 10:21:56,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:21:56,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:21:56,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 10:21:57,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 10:21:57,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:21:57,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:21:57,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:21:57,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-15 10:21:57,066 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:21:57,067 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:21:57,159 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:21:57,166 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:21:57,172 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 10:21:57,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:21:57 BoogieIcfgContainer [2023-02-15 10:21:57,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:21:57,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:21:57,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:21:57,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:21:57,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:21:56" (1/3) ... [2023-02-15 10:21:57,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e08bcc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:21:57, skipping insertion in model container [2023-02-15 10:21:57,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:21:56" (2/3) ... [2023-02-15 10:21:57,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e08bcc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:21:57, skipping insertion in model container [2023-02-15 10:21:57,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:21:57" (3/3) ... [2023-02-15 10:21:57,195 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2023-02-15 10:21:57,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:21:57,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 10:21:57,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:21:57,256 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3a82c0dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:21:57,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 10:21:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:57,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 10:21:57,264 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:21:57,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 10:21:57,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:21:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:21:57,269 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2023-02-15 10:21:57,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:21:57,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155313448] [2023-02-15 10:21:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:21:57,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:21:57,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:21:57,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:21:57,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 10:21:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:21:57,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 10:21:57,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:21:57,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:57,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:21:57,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:21:57,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155313448] [2023-02-15 10:21:57,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155313448] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:21:57,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:21:57,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 10:21:57,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582312292] [2023-02-15 10:21:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:21:57,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 10:21:57,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:21:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 10:21:57,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:21:57,424 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:21:57,434 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-02-15 10:21:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 10:21:57,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 10:21:57,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:21:57,444 INFO L225 Difference]: With dead ends: 21 [2023-02-15 10:21:57,444 INFO L226 Difference]: Without dead ends: 9 [2023-02-15 10:21:57,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:21:57,451 INFO L413 NwaCegarLoop]: 14 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, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:21:57,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:21:57,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-15 10:21:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-15 10:21:57,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-02-15 10:21:57,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-02-15 10:21:57,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:21:57,472 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-02-15 10:21:57,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:57,473 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-02-15 10:21:57,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 10:21:57,473 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:21:57,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 10:21:57,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-15 10:21:57,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:21:57,680 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:21:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:21:57,681 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2023-02-15 10:21:57,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:21:57,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738177882] [2023-02-15 10:21:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:21:57,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:21:57,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:21:57,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:21:57,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-15 10:21:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:21:57,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 10:21:57,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:21:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:57,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:21:57,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:21:57,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738177882] [2023-02-15 10:21:57,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738177882] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:21:57,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:21:57,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:21:57,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371794787] [2023-02-15 10:21:57,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:21:57,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:21:57,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:21:57,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:21:57,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:21:57,734 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:21:57,742 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-02-15 10:21:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:21:57,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 10:21:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:21:57,743 INFO L225 Difference]: With dead ends: 16 [2023-02-15 10:21:57,743 INFO L226 Difference]: Without dead ends: 12 [2023-02-15 10:21:57,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:21:57,744 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:21:57,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:21:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-15 10:21:57,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-02-15 10:21:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-15 10:21:57,747 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-02-15 10:21:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:21:57,747 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-15 10:21:57,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-15 10:21:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 10:21:57,748 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:21:57,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:21:57,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-15 10:21:57,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:21:57,958 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:21:57,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:21:57,958 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2023-02-15 10:21:57,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:21:57,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592438721] [2023-02-15 10:21:57,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:21:57,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:21:57,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:21:57,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:21:57,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-15 10:21:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:21:58,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 10:21:58,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:21:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:58,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:21:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:58,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:21:58,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592438721] [2023-02-15 10:21:58,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592438721] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:21:58,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:21:58,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-02-15 10:21:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398193917] [2023-02-15 10:21:58,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:21:58,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:21:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:21:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:21:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:21:58,059 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:21:58,090 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-02-15 10:21:58,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 10:21:58,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 10:21:58,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:21:58,106 INFO L225 Difference]: With dead ends: 23 [2023-02-15 10:21:58,106 INFO L226 Difference]: Without dead ends: 19 [2023-02-15 10:21:58,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:21:58,107 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:21:58,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 24 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:21:58,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-15 10:21:58,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-15 10:21:58,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-15 10:21:58,111 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2023-02-15 10:21:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:21:58,111 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-15 10:21:58,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-15 10:21:58,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 10:21:58,111 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:21:58,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-15 10:21:58,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-02-15 10:21:58,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:21:58,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:21:58,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:21:58,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2023-02-15 10:21:58,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:21:58,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881150388] [2023-02-15 10:21:58,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 10:21:58,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:21:58,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:21:58,315 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:21:58,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-15 10:21:58,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 10:21:58,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:21:58,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 10:21:58,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:21:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:58,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:21:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:21:58,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:21:58,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881150388] [2023-02-15 10:21:58,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881150388] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:21:58,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:21:58,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-15 10:21:58,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34373637] [2023-02-15 10:21:58,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:21:58,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 10:21:58,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:21:58,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 10:21:58,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-15 10:21:58,465 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:21:58,542 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2023-02-15 10:21:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 10:21:58,543 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-15 10:21:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:21:58,544 INFO L225 Difference]: With dead ends: 35 [2023-02-15 10:21:58,544 INFO L226 Difference]: Without dead ends: 31 [2023-02-15 10:21:58,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-02-15 10:21:58,545 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:21:58,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 82 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:21:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-15 10:21:58,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-15 10:21:58,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2023-02-15 10:21:58,550 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2023-02-15 10:21:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:21:58,550 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2023-02-15 10:21:58,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:21:58,550 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2023-02-15 10:21:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 10:21:58,551 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:21:58,551 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2023-02-15 10:21:58,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-15 10:21:58,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:21:58,757 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:21:58,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:21:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2023-02-15 10:21:58,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:21:58,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084407810] [2023-02-15 10:21:58,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 10:21:58,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:21:58,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:21:58,760 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:21:58,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-15 10:21:58,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-15 10:21:58,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:21:58,792 WARN L261 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-15 10:21:58,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:22:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:22:00,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:22:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:22:03,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:22:03,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084407810] [2023-02-15 10:22:03,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084407810] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:22:03,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:22:03,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2023-02-15 10:22:03,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667522305] [2023-02-15 10:22:03,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:22:03,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-02-15 10:22:03,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:22:03,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-02-15 10:22:03,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=2170, Unknown=0, NotChecked=0, Total=2756 [2023-02-15 10:22:03,148 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:22:15,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:22:15,546 INFO L93 Difference]: Finished difference Result 162 states and 204 transitions. [2023-02-15 10:22:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-15 10:22:15,547 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 10:22:15,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:22:15,554 INFO L225 Difference]: With dead ends: 162 [2023-02-15 10:22:15,554 INFO L226 Difference]: Without dead ends: 156 [2023-02-15 10:22:15,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3620 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=2530, Invalid=9026, Unknown=0, NotChecked=0, Total=11556 [2023-02-15 10:22:15,574 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 167 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:22:15,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 70 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-15 10:22:15,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-15 10:22:15,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 95. [2023-02-15 10:22:15,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.3404255319148937) internal successors, (126), 94 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:22:15,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 126 transitions. [2023-02-15 10:22:15,630 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 126 transitions. Word has length 30 [2023-02-15 10:22:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:22:15,630 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 126 transitions. [2023-02-15 10:22:15,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:22:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 126 transitions. [2023-02-15 10:22:15,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 10:22:15,632 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:22:15,632 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:22:15,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-15 10:22:15,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:22:15,848 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:22:15,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:22:15,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1777786732, now seen corresponding path program 1 times [2023-02-15 10:22:15,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:22:15,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131158065] [2023-02-15 10:22:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:22:15,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:22:15,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:22:15,851 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:22:15,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-15 10:22:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:22:15,881 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-15 10:22:15,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:22:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:22:16,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:22:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:22:19,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:22:19,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131158065] [2023-02-15 10:22:19,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131158065] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:22:19,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:22:19,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-15 10:22:19,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966356550] [2023-02-15 10:22:19,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:22:19,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-15 10:22:19,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:22:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-15 10:22:19,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2240, Unknown=0, NotChecked=0, Total=2652 [2023-02-15 10:22:19,003 INFO L87 Difference]: Start difference. First operand 95 states and 126 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:22:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:22:49,579 INFO L93 Difference]: Finished difference Result 419 states and 575 transitions. [2023-02-15 10:22:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-02-15 10:22:49,580 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 10:22:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:22:49,581 INFO L225 Difference]: With dead ends: 419 [2023-02-15 10:22:49,581 INFO L226 Difference]: Without dead ends: 365 [2023-02-15 10:22:49,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12574 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=5964, Invalid=33042, Unknown=0, NotChecked=0, Total=39006 [2023-02-15 10:22:49,591 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 320 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-15 10:22:49,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 118 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-02-15 10:22:49,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-02-15 10:22:49,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 201. [2023-02-15 10:22:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.375) internal successors, (275), 200 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:22:49,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 275 transitions. [2023-02-15 10:22:49,623 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 275 transitions. Word has length 30 [2023-02-15 10:22:49,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:22:49,624 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 275 transitions. [2023-02-15 10:22:49,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:22:49,624 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 275 transitions. [2023-02-15 10:22:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 10:22:49,625 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:22:49,625 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:22:49,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-02-15 10:22:49,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:22:49,832 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:22:49,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:22:49,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1894380496, now seen corresponding path program 2 times [2023-02-15 10:22:49,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:22:49,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309049417] [2023-02-15 10:22:49,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 10:22:49,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:22:49,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:22:49,834 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:22:49,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-15 10:22:49,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 10:22:49,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:22:49,860 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-15 10:22:49,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:22:50,560 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:22:50,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:22:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:22:53,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:22:53,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309049417] [2023-02-15 10:22:53,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309049417] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:22:53,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:22:53,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-15 10:22:53,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001010932] [2023-02-15 10:22:53,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:22:53,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-15 10:22:53,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:22:53,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-15 10:22:53,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2283, Unknown=0, NotChecked=0, Total=2652 [2023-02-15 10:22:53,341 INFO L87 Difference]: Start difference. First operand 201 states and 275 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:23:27,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:23:27,221 INFO L93 Difference]: Finished difference Result 393 states and 512 transitions. [2023-02-15 10:23:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-02-15 10:23:27,221 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 10:23:27,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:23:27,222 INFO L225 Difference]: With dead ends: 393 [2023-02-15 10:23:27,223 INFO L226 Difference]: Without dead ends: 336 [2023-02-15 10:23:27,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12753 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=5431, Invalid=32789, Unknown=0, NotChecked=0, Total=38220 [2023-02-15 10:23:27,228 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 210 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:23:27,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 121 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-15 10:23:27,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-02-15 10:23:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 222. [2023-02-15 10:23:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.3619909502262444) internal successors, (301), 221 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:23:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 301 transitions. [2023-02-15 10:23:27,282 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 301 transitions. Word has length 30 [2023-02-15 10:23:27,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:23:27,282 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 301 transitions. [2023-02-15 10:23:27,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:23:27,282 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 301 transitions. [2023-02-15 10:23:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 10:23:27,283 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:23:27,283 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:23:27,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-02-15 10:23:27,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:23:27,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:23:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:23:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1978693868, now seen corresponding path program 3 times [2023-02-15 10:23:27,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:23:27,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187237984] [2023-02-15 10:23:27,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 10:23:27,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:23:27,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:23:27,492 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:23:27,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-15 10:23:27,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-15 10:23:27,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:23:27,523 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-15 10:23:27,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:23:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:23:28,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:23:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:23:32,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:23:32,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187237984] [2023-02-15 10:23:32,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187237984] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:23:32,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:23:32,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-15 10:23:32,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035880071] [2023-02-15 10:23:32,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:23:32,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-15 10:23:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:23:32,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-15 10:23:32,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=2398, Unknown=0, NotChecked=0, Total=2862 [2023-02-15 10:23:32,178 INFO L87 Difference]: Start difference. First operand 222 states and 301 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:24:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:24:02,323 INFO L93 Difference]: Finished difference Result 592 states and 762 transitions. [2023-02-15 10:24:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-02-15 10:24:02,324 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 10:24:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:24:02,326 INFO L225 Difference]: With dead ends: 592 [2023-02-15 10:24:02,326 INFO L226 Difference]: Without dead ends: 584 [2023-02-15 10:24:02,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5569 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=3261, Invalid=15371, Unknown=0, NotChecked=0, Total=18632 [2023-02-15 10:24:02,328 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 226 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-02-15 10:24:02,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 111 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-02-15 10:24:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-02-15 10:24:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 343. [2023-02-15 10:24:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.3421052631578947) internal successors, (459), 342 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:24:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 459 transitions. [2023-02-15 10:24:02,406 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 459 transitions. Word has length 30 [2023-02-15 10:24:02,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:24:02,407 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 459 transitions. [2023-02-15 10:24:02,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:24:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 459 transitions. [2023-02-15 10:24:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 10:24:02,409 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:24:02,409 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-15 10:24:02,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-02-15 10:24:02,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:24:02,615 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:24:02,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:24:02,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2035952170, now seen corresponding path program 4 times [2023-02-15 10:24:02,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:24:02,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573969722] [2023-02-15 10:24:02,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 10:24:02,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:24:02,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:24:02,617 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:24:02,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-15 10:24:02,641 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 10:24:02,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:24:02,641 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-15 10:24:02,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:24:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:24:03,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:24:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:24:05,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:24:05,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573969722] [2023-02-15 10:24:05,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573969722] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:24:05,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:24:05,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-15 10:24:05,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446021754] [2023-02-15 10:24:05,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:24:05,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-15 10:24:05,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:24:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-15 10:24:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=2256, Unknown=0, NotChecked=0, Total=2652 [2023-02-15 10:24:05,790 INFO L87 Difference]: Start difference. First operand 343 states and 459 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:24:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:24:46,766 INFO L93 Difference]: Finished difference Result 681 states and 899 transitions. [2023-02-15 10:24:46,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2023-02-15 10:24:46,767 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 10:24:46,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:24:46,770 INFO L225 Difference]: With dead ends: 681 [2023-02-15 10:24:46,770 INFO L226 Difference]: Without dead ends: 637 [2023-02-15 10:24:46,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15488 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=6319, Invalid=40121, Unknown=0, NotChecked=0, Total=46440 [2023-02-15 10:24:46,774 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 202 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-15 10:24:46,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 170 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-15 10:24:46,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-02-15 10:24:46,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 454. [2023-02-15 10:24:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.3642384105960266) internal successors, (618), 453 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:24:46,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 618 transitions. [2023-02-15 10:24:46,878 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 618 transitions. Word has length 30 [2023-02-15 10:24:46,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:24:46,879 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 618 transitions. [2023-02-15 10:24:46,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:24:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 618 transitions. [2023-02-15 10:24:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 10:24:46,880 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:24:46,880 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-15 10:24:46,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-15 10:24:47,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:24:47,086 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:24:47,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:24:47,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1636215058, now seen corresponding path program 5 times [2023-02-15 10:24:47,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:24:47,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112996907] [2023-02-15 10:24:47,087 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 10:24:47,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:24:47,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:24:47,089 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:24:47,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-15 10:24:47,118 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-15 10:24:47,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:24:47,119 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-15 10:24:47,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:24:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:24:47,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:24:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:24:50,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:24:50,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112996907] [2023-02-15 10:24:50,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112996907] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:24:50,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:24:50,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-15 10:24:50,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985772337] [2023-02-15 10:24:50,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:24:50,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-15 10:24:50,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:24:50,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-15 10:24:50,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2259, Unknown=0, NotChecked=0, Total=2652 [2023-02-15 10:24:50,623 INFO L87 Difference]: Start difference. First operand 454 states and 618 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:25:20,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:25:20,400 INFO L93 Difference]: Finished difference Result 645 states and 869 transitions. [2023-02-15 10:25:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-02-15 10:25:20,401 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 10:25:20,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:25:20,403 INFO L225 Difference]: With dead ends: 645 [2023-02-15 10:25:20,403 INFO L226 Difference]: Without dead ends: 596 [2023-02-15 10:25:20,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7845 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=3942, Invalid=22790, Unknown=0, NotChecked=0, Total=26732 [2023-02-15 10:25:20,405 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 157 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:25:20,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 65 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-15 10:25:20,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-02-15 10:25:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 480. [2023-02-15 10:25:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.3590814196242171) internal successors, (651), 479 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:25:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 651 transitions. [2023-02-15 10:25:20,521 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 651 transitions. Word has length 30 [2023-02-15 10:25:20,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:25:20,523 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 651 transitions. [2023-02-15 10:25:20,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:25:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 651 transitions. [2023-02-15 10:25:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 10:25:20,525 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:25:20,525 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-15 10:25:20,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-02-15 10:25:20,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:25:20,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:25:20,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:25:20,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1578956756, now seen corresponding path program 6 times [2023-02-15 10:25:20,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:25:20,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374093471] [2023-02-15 10:25:20,733 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 10:25:20,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:25:20,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:25:20,736 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:25:20,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-15 10:25:20,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-15 10:25:20,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:25:20,776 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-15 10:25:20,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:25:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:25:21,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:25:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:25:24,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:25:24,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374093471] [2023-02-15 10:25:24,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374093471] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:25:24,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:25:24,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-15 10:25:24,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486299014] [2023-02-15 10:25:24,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:25:24,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-15 10:25:24,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:25:24,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-15 10:25:24,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=2449, Unknown=0, NotChecked=0, Total=2862 [2023-02-15 10:25:24,982 INFO L87 Difference]: Start difference. First operand 480 states and 651 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 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)