./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bb6780cd72c063a3ddf598e6503fa6a629155476e6b8e08224a0e59d0bc00b9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 16:15:22,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 16:15:22,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 16:15:22,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 16:15:22,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 16:15:22,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 16:15:22,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 16:15:22,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 16:15:22,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 16:15:22,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 16:15:22,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 16:15:22,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 16:15:22,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 16:15:22,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 16:15:22,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 16:15:22,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 16:15:22,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 16:15:22,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 16:15:22,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 16:15:22,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 16:15:22,548 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 16:15:22,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 16:15:22,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 16:15:22,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 16:15:22,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 16:15:22,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 16:15:22,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 16:15:22,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 16:15:22,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 16:15:22,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 16:15:22,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 16:15:22,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 16:15:22,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 16:15:22,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 16:15:22,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 16:15:22,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 16:15:22,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 16:15:22,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 16:15:22,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 16:15:22,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 16:15:22,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 16:15:22,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 16:15:22,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 16:15:22,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 16:15:22,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 16:15:22,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 16:15:22,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 16:15:22,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 16:15:22,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 16:15:22,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 16:15:22,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 16:15:22,609 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 16:15:22,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 16:15:22,610 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 16:15:22,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 16:15:22,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 16:15:22,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 16:15:22,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 16:15:22,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 16:15:22,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 16:15:22,611 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 16:15:22,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 16:15:22,612 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 16:15:22,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 16:15:22,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 16:15:22,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 16:15:22,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 16:15:22,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:15:22,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 16:15:22,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 16:15:22,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 16:15:22,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 16:15:22,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 16:15:22,613 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 16:15:22,614 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 16:15:22,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 16:15:22,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bb6780cd72c063a3ddf598e6503fa6a629155476e6b8e08224a0e59d0bc00b9 [2022-07-22 16:15:22,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 16:15:22,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 16:15:22,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 16:15:22,971 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 16:15:22,972 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 16:15:22,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2022-07-22 16:15:23,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a307c53a3/d07f8c1ab3c441f8a1e69a7476eb2b53/FLAGe6a672c76 [2022-07-22 16:15:23,580 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 16:15:23,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2022-07-22 16:15:23,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a307c53a3/d07f8c1ab3c441f8a1e69a7476eb2b53/FLAGe6a672c76 [2022-07-22 16:15:23,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a307c53a3/d07f8c1ab3c441f8a1e69a7476eb2b53 [2022-07-22 16:15:23,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 16:15:23,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 16:15:23,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 16:15:23,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 16:15:23,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 16:15:23,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:15:23" (1/1) ... [2022-07-22 16:15:23,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd9e652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:23, skipping insertion in model container [2022-07-22 16:15:23,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:15:23" (1/1) ... [2022-07-22 16:15:23,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 16:15:23,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 16:15:24,183 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2022-07-22 16:15:24,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:15:24,210 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 16:15:24,222 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2022-07-22 16:15:24,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:15:24,246 INFO L208 MainTranslator]: Completed translation [2022-07-22 16:15:24,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:24 WrapperNode [2022-07-22 16:15:24,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 16:15:24,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 16:15:24,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 16:15:24,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 16:15:24,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:24" (1/1) ... [2022-07-22 16:15:24,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:24" (1/1) ... [2022-07-22 16:15:24,282 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-07-22 16:15:24,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 16:15:24,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 16:15:24,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 16:15:24,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 16:15:24,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:24" (1/1) ... [2022-07-22 16:15:24,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:24" (1/1) ... [2022-07-22 16:15:24,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:24" (1/1) ... [2022-07-22 16:15:24,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:24" (1/1) ... [2022-07-22 16:15:24,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:24" (1/1) ... [2022-07-22 16:15:24,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:24" (1/1) ... [2022-07-22 16:15:24,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:24" (1/1) ... [2022-07-22 16:15:24,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 16:15:24,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 16:15:24,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 16:15:24,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 16:15:24,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:24" (1/1) ... [2022-07-22 16:15:24,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:15:24,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:15:24,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 16:15:24,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 16:15:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 16:15:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 16:15:24,375 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 16:15:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 16:15:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 16:15:24,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 16:15:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 16:15:24,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 16:15:24,428 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 16:15:24,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 16:15:24,601 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 16:15:24,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 16:15:24,618 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 16:15:24,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:15:24 BoogieIcfgContainer [2022-07-22 16:15:24,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 16:15:24,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 16:15:24,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 16:15:24,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 16:15:24,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:15:23" (1/3) ... [2022-07-22 16:15:24,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d3f031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:15:24, skipping insertion in model container [2022-07-22 16:15:24,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:15:24" (2/3) ... [2022-07-22 16:15:24,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d3f031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:15:24, skipping insertion in model container [2022-07-22 16:15:24,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:15:24" (3/3) ... [2022-07-22 16:15:24,640 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.c [2022-07-22 16:15:24,666 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 16:15:24,666 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 16:15:24,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 16:15:24,766 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70cbc605, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@14cc6d86 [2022-07-22 16:15:24,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 16:15:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-22 16:15:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 16:15:24,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:15:24,777 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:15:24,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:15:24,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:15:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2022-07-22 16:15:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:15:24,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595127044] [2022-07-22 16:15:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:24,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:15:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:15:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:15:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:15:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 16:15:25,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:15:25,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595127044] [2022-07-22 16:15:25,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595127044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:15:25,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:15:25,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 16:15:25,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060889088] [2022-07-22 16:15:25,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:15:25,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 16:15:25,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:15:25,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 16:15:25,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 16:15:25,094 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 16:15:25,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:15:25,123 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2022-07-22 16:15:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 16:15:25,126 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-07-22 16:15:25,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:15:25,132 INFO L225 Difference]: With dead ends: 63 [2022-07-22 16:15:25,133 INFO L226 Difference]: Without dead ends: 29 [2022-07-22 16:15:25,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 16:15:25,142 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:15:25,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:15:25,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-22 16:15:25,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-07-22 16:15:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-22 16:15:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-07-22 16:15:25,186 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2022-07-22 16:15:25,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:15:25,186 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-07-22 16:15:25,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 16:15:25,187 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-07-22 16:15:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 16:15:25,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:15:25,196 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:15:25,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 16:15:25,198 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:15:25,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:15:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2022-07-22 16:15:25,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:15:25,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139550699] [2022-07-22 16:15:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:25,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:15:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:15:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:15:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:15:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 16:15:25,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:15:25,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139550699] [2022-07-22 16:15:25,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139550699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:15:25,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:15:25,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:15:25,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029499011] [2022-07-22 16:15:25,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:15:25,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:15:25,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:15:25,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:15:25,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:15:25,341 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 16:15:25,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:15:25,428 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-07-22 16:15:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:15:25,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-07-22 16:15:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:15:25,430 INFO L225 Difference]: With dead ends: 42 [2022-07-22 16:15:25,430 INFO L226 Difference]: Without dead ends: 40 [2022-07-22 16:15:25,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:15:25,431 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:15:25,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 128 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:15:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-22 16:15:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-07-22 16:15:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-22 16:15:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-07-22 16:15:25,443 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2022-07-22 16:15:25,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:15:25,444 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-07-22 16:15:25,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 16:15:25,446 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-07-22 16:15:25,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-22 16:15:25,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:15:25,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:15:25,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 16:15:25,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:15:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:15:25,450 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2022-07-22 16:15:25,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:15:25,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384129151] [2022-07-22 16:15:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:25,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:15:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:15:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:15:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:15:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 16:15:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 16:15:25,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:15:25,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384129151] [2022-07-22 16:15:25,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384129151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:15:25,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:15:25,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:15:25,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127226488] [2022-07-22 16:15:25,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:15:25,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:15:25,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:15:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:15:25,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:15:25,570 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 16:15:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:15:25,646 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2022-07-22 16:15:25,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:15:25,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-07-22 16:15:25,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:15:25,648 INFO L225 Difference]: With dead ends: 46 [2022-07-22 16:15:25,648 INFO L226 Difference]: Without dead ends: 44 [2022-07-22 16:15:25,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:15:25,649 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:15:25,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 123 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:15:25,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-22 16:15:25,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-07-22 16:15:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-22 16:15:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-07-22 16:15:25,659 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2022-07-22 16:15:25,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:15:25,660 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-07-22 16:15:25,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 16:15:25,660 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-07-22 16:15:25,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 16:15:25,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:15:25,661 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:15:25,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 16:15:25,662 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:15:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:15:25,662 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2022-07-22 16:15:25,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:15:25,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135809568] [2022-07-22 16:15:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:25,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:15:25,676 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:15:25,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496209153] [2022-07-22 16:15:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:25,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:15:25,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:15:25,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:15:25,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 16:15:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:25,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 16:15:25,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:15:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:15:26,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:15:26,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:15:26,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135809568] [2022-07-22 16:15:26,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:15:26,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496209153] [2022-07-22 16:15:26,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496209153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:15:26,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:15:26,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:15:26,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470577021] [2022-07-22 16:15:26,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:15:26,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:15:26,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:15:26,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:15:26,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:15:26,079 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-22 16:15:26,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:15:26,279 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2022-07-22 16:15:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:15:26,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2022-07-22 16:15:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:15:26,281 INFO L225 Difference]: With dead ends: 65 [2022-07-22 16:15:26,281 INFO L226 Difference]: Without dead ends: 51 [2022-07-22 16:15:26,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:15:26,283 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:15:26,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 178 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:15:26,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-22 16:15:26,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-07-22 16:15:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-22 16:15:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-07-22 16:15:26,294 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 34 [2022-07-22 16:15:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:15:26,295 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-07-22 16:15:26,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-22 16:15:26,295 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-07-22 16:15:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 16:15:26,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:15:26,296 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:15:26,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 16:15:26,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:15:26,517 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:15:26,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:15:26,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2022-07-22 16:15:26,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:15:26,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866487316] [2022-07-22 16:15:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:26,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:15:26,531 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:15:26,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555918089] [2022-07-22 16:15:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:26,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:15:26,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:15:26,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:15:26,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 16:15:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:26,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-22 16:15:26,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:15:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:15:26,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:15:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:15:26,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:15:26,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866487316] [2022-07-22 16:15:26,910 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:15:26,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555918089] [2022-07-22 16:15:26,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555918089] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 16:15:26,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:15:26,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2022-07-22 16:15:26,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315664292] [2022-07-22 16:15:26,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:15:26,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:15:26,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:15:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:15:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:15:26,912 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 16:15:26,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:15:26,983 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2022-07-22 16:15:26,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:15:26,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2022-07-22 16:15:26,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:15:26,985 INFO L225 Difference]: With dead ends: 64 [2022-07-22 16:15:26,985 INFO L226 Difference]: Without dead ends: 62 [2022-07-22 16:15:26,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:15:26,987 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:15:26,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 131 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:15:26,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-22 16:15:26,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2022-07-22 16:15:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-22 16:15:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2022-07-22 16:15:26,996 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 41 [2022-07-22 16:15:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:15:26,997 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2022-07-22 16:15:26,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 16:15:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2022-07-22 16:15:26,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-22 16:15:26,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:15:26,998 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:15:27,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 16:15:27,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:15:27,216 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:15:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:15:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash 105343995, now seen corresponding path program 1 times [2022-07-22 16:15:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:15:27,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507789517] [2022-07-22 16:15:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:27,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:15:27,235 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:15:27,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637355253] [2022-07-22 16:15:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:27,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:15:27,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:15:27,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:15:27,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 16:15:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:27,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 16:15:27,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:15:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-22 16:15:27,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:15:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-22 16:15:27,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:15:27,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507789517] [2022-07-22 16:15:27,821 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:15:27,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637355253] [2022-07-22 16:15:27,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637355253] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 16:15:27,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:15:27,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-22 16:15:27,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742678555] [2022-07-22 16:15:27,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:15:27,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:15:27,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:15:27,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:15:27,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:15:27,824 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 16:15:28,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:15:28,121 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2022-07-22 16:15:28,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:15:28,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2022-07-22 16:15:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:15:28,123 INFO L225 Difference]: With dead ends: 78 [2022-07-22 16:15:28,123 INFO L226 Difference]: Without dead ends: 76 [2022-07-22 16:15:28,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:15:28,124 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:15:28,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 122 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:15:28,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-22 16:15:28,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2022-07-22 16:15:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-22 16:15:28,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2022-07-22 16:15:28,134 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 51 [2022-07-22 16:15:28,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:15:28,135 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2022-07-22 16:15:28,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 16:15:28,135 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2022-07-22 16:15:28,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-22 16:15:28,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:15:28,136 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:15:28,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 16:15:28,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:15:28,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:15:28,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:15:28,359 INFO L85 PathProgramCache]: Analyzing trace with hash 957489548, now seen corresponding path program 1 times [2022-07-22 16:15:28,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:15:28,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291199299] [2022-07-22 16:15:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:28,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:15:28,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:15:28,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975177864] [2022-07-22 16:15:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:28,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:15:28,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:15:28,381 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:15:28,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 16:15:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:28,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:15:28,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:15:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-22 16:15:28,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:15:28,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:15:28,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291199299] [2022-07-22 16:15:28,479 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:15:28,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975177864] [2022-07-22 16:15:28,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975177864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:15:28,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:15:28,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:15:28,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376271269] [2022-07-22 16:15:28,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:15:28,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:15:28,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:15:28,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:15:28,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:15:28,482 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:15:28,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:15:28,549 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2022-07-22 16:15:28,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:15:28,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2022-07-22 16:15:28,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:15:28,552 INFO L225 Difference]: With dead ends: 75 [2022-07-22 16:15:28,552 INFO L226 Difference]: Without dead ends: 68 [2022-07-22 16:15:28,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:15:28,554 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:15:28,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:15:28,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-22 16:15:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2022-07-22 16:15:28,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.15) internal successors, (46), 43 states have internal predecessors, (46), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-22 16:15:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2022-07-22 16:15:28,563 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 52 [2022-07-22 16:15:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:15:28,564 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2022-07-22 16:15:28,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 16:15:28,564 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2022-07-22 16:15:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-22 16:15:28,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:15:28,565 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:15:28,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 16:15:28,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:15:28,791 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:15:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:15:28,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2022-07-22 16:15:28,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:15:28,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973075238] [2022-07-22 16:15:28,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:28,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:15:28,808 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:15:28,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810487874] [2022-07-22 16:15:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:15:28,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:15:28,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:15:28,811 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:15:28,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 16:15:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:15:28,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-22 16:15:28,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:15:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 38 proven. 27 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 16:15:29,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:16:16,694 WARN L233 SmtUtils]: Spent 34.65s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 16:16:57,642 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse9 (mod |c_ULTIMATE.start_main_~B~0#1| 4294967296))) (or (let ((.cse4 (= (mod |c_ULTIMATE.start_main_~p~0#1| 2) 0)) (.cse10 (div |c_ULTIMATE.start_main_~p~0#1| 2))) (let ((.cse1 (* .cse9 (+ .cse10 1 |c_ULTIMATE.start_main_~q~0#1|))) (.cse6 (* .cse9 (+ .cse10 |c_ULTIMATE.start_main_~q~0#1|))) (.cse2 (* (- 1) (div |c_ULTIMATE.start_main_~d~0#1| 2))) (.cse3 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse5 (not .cse4)) (.cse8 (= (mod |c_ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse7 (< |c_ULTIMATE.start_main_~d~0#1| 0))) (and (or (let ((.cse0 (< |c_ULTIMATE.start_main_~p~0#1| 0))) (and (or (not .cse0) (= (+ .cse1 |c_ULTIMATE.start_main_~r~0#1| .cse2) .cse3) .cse4) (or (and .cse5 .cse0) (= .cse3 (+ .cse6 |c_ULTIMATE.start_main_~r~0#1| .cse2))))) (and .cse7 (not .cse8))) (or (and (or (= .cse3 (+ (- 1) .cse1 |c_ULTIMATE.start_main_~r~0#1| .cse2)) .cse4) (or (= (+ (- 1) .cse6 |c_ULTIMATE.start_main_~r~0#1| .cse2) .cse3) .cse5)) .cse8 (not .cse7))))) (<= |c_ULTIMATE.start_main_~d~0#1| |c_ULTIMATE.start_main_~r~0#1|) (not (= |c_ULTIMATE.start_main_~d~0#1| (* |c_ULTIMATE.start_main_~p~0#1| .cse9))))) is different from true [2022-07-22 16:17:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 5 not checked. [2022-07-22 16:17:58,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:17:58,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973075238] [2022-07-22 16:17:58,118 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:17:58,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810487874] [2022-07-22 16:17:58,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810487874] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:17:58,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:17:58,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 21 [2022-07-22 16:17:58,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557651173] [2022-07-22 16:17:58,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 16:17:58,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 16:17:58,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:17:58,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 16:17:58,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=309, Unknown=1, NotChecked=36, Total=420 [2022-07-22 16:17:58,120 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2022-07-22 16:18:00,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 16:18:02,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 16:18:05,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 16:18:07,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 16:18:09,719 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 16:18:11,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 16:18:32,672 WARN L233 SmtUtils]: Spent 20.06s on a formula simplification. DAG size of input: 68 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 16:18:35,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 16:18:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:18:40,883 INFO L93 Difference]: Finished difference Result 141 states and 186 transitions. [2022-07-22 16:18:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 16:18:40,884 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) Word has length 71 [2022-07-22 16:18:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:18:40,885 INFO L225 Difference]: With dead ends: 141 [2022-07-22 16:18:40,886 INFO L226 Difference]: Without dead ends: 114 [2022-07-22 16:18:40,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 118 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 60.5s TimeCoverageRelationStatistics Valid=150, Invalid=609, Unknown=1, NotChecked=52, Total=812 [2022-07-22 16:18:40,887 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 61 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 139 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-07-22 16:18:40,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 150 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 635 Invalid, 7 Unknown, 68 Unchecked, 20.4s Time] [2022-07-22 16:18:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-07-22 16:18:40,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2022-07-22 16:18:40,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 65 states have (on average 1.2) internal successors, (78), 70 states have internal predecessors, (78), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (31), 27 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-22 16:18:40,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2022-07-22 16:18:40,903 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 71 [2022-07-22 16:18:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:18:40,903 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2022-07-22 16:18:40,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2022-07-22 16:18:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2022-07-22 16:18:40,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-22 16:18:40,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:18:40,905 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:18:40,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 16:18:41,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:18:41,118 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:18:41,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:18:41,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2022-07-22 16:18:41,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:18:41,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598556773] [2022-07-22 16:18:41,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:18:41,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:18:41,128 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:18:41,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941193189] [2022-07-22 16:18:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:18:41,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:18:41,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:18:41,129 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:18:41,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 16:18:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:18:41,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-22 16:18:41,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:18:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 72 proven. 11 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-22 16:18:42,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:18:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-22 16:18:43,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:18:43,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598556773] [2022-07-22 16:18:43,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:18:43,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941193189] [2022-07-22 16:18:43,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941193189] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:18:43,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:18:43,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9] total 22 [2022-07-22 16:18:43,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570247408] [2022-07-22 16:18:43,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 16:18:43,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 16:18:43,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:18:43,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 16:18:43,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-07-22 16:18:43,315 INFO L87 Difference]: Start difference. First operand 109 states and 141 transitions. Second operand has 22 states, 17 states have (on average 2.235294117647059) internal successors, (38), 15 states have internal predecessors, (38), 10 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) [2022-07-22 16:18:49,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:18:49,869 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2022-07-22 16:18:49,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 16:18:49,871 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.235294117647059) internal successors, (38), 15 states have internal predecessors, (38), 10 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) Word has length 82 [2022-07-22 16:18:49,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:18:49,872 INFO L225 Difference]: With dead ends: 154 [2022-07-22 16:18:49,872 INFO L226 Difference]: Without dead ends: 107 [2022-07-22 16:18:49,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=193, Invalid=929, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 16:18:49,874 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 59 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:18:49,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 165 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-22 16:18:49,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-22 16:18:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 93. [2022-07-22 16:18:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 60 states have internal predecessors, (64), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-22 16:18:49,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2022-07-22 16:18:49,887 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 82 [2022-07-22 16:18:49,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:18:49,887 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2022-07-22 16:18:49,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.235294117647059) internal successors, (38), 15 states have internal predecessors, (38), 10 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) [2022-07-22 16:18:49,887 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2022-07-22 16:18:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 16:18:49,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:18:49,888 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:18:49,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 16:18:50,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:18:50,104 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:18:50,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:18:50,104 INFO L85 PathProgramCache]: Analyzing trace with hash -219918921, now seen corresponding path program 1 times [2022-07-22 16:18:50,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:18:50,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747966675] [2022-07-22 16:18:50,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:18:50,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:18:50,113 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:18:50,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70748192] [2022-07-22 16:18:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:18:50,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:18:50,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:18:50,115 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:18:50,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 16:18:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:18:50,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:18:50,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:18:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-07-22 16:18:50,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:18:50,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:18:50,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747966675] [2022-07-22 16:18:50,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:18:50,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70748192] [2022-07-22 16:18:50,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70748192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:18:50,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:18:50,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:18:50,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907118281] [2022-07-22 16:18:50,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:18:50,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:18:50,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:18:50,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:18:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:18:50,276 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-22 16:18:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:18:50,334 INFO L93 Difference]: Finished difference Result 107 states and 128 transitions. [2022-07-22 16:18:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:18:50,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 91 [2022-07-22 16:18:50,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:18:50,338 INFO L225 Difference]: With dead ends: 107 [2022-07-22 16:18:50,338 INFO L226 Difference]: Without dead ends: 95 [2022-07-22 16:18:50,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:18:50,340 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 14 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:18:50,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 110 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:18:50,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-22 16:18:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-07-22 16:18:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 60 states have internal predecessors, (65), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-22 16:18:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2022-07-22 16:18:50,360 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 91 [2022-07-22 16:18:50,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:18:50,361 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2022-07-22 16:18:50,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-22 16:18:50,361 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2022-07-22 16:18:50,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 16:18:50,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:18:50,368 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:18:50,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-22 16:18:50,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:18:50,590 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:18:50,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:18:50,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2103086134, now seen corresponding path program 2 times [2022-07-22 16:18:50,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:18:50,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87727415] [2022-07-22 16:18:50,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:18:50,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:18:50,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:18:50,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613886932] [2022-07-22 16:18:50,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 16:18:50,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:18:50,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:18:50,602 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:18:50,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 16:18:50,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 16:18:50,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 16:18:50,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 16:18:50,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:18:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 162 proven. 21 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-22 16:18:50,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:18:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-22 16:18:51,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:18:51,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87727415] [2022-07-22 16:18:51,064 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:18:51,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613886932] [2022-07-22 16:18:51,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613886932] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:18:51,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:18:51,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-07-22 16:18:51,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048473837] [2022-07-22 16:18:51,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 16:18:51,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 16:18:51,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:18:51,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 16:18:51,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:18:51,066 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 9 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) [2022-07-22 16:18:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:18:51,536 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2022-07-22 16:18:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:18:51,537 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 9 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) Word has length 101 [2022-07-22 16:18:51,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:18:51,537 INFO L225 Difference]: With dead ends: 99 [2022-07-22 16:18:51,538 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 16:18:51,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:18:51,539 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 16:18:51,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 151 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 16:18:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 16:18:51,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 16:18:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 16:18:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 16:18:51,540 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2022-07-22 16:18:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:18:51,540 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 16:18:51,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 9 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) [2022-07-22 16:18:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 16:18:51,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 16:18:51,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 16:18:51,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 16:18:51,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 16:18:51,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 16:18:55,739 INFO L895 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (and (<= .cse0 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) (<= 1 .cse0))) [2022-07-22 16:18:55,740 INFO L899 garLoopResultBuilder]: For program point L48(lines 46 58) no Hoare annotation was computed. [2022-07-22 16:18:55,740 INFO L895 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (<= 1 .cse0)) (.cse2 (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse6)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse6)) (.cse5 (< 0 (+ (div (+ (* (- 1) |ULTIMATE.start_main_~r~0#1|) 1) 4294967296) 1)))) (or (and (<= .cse0 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 (<= .cse0 |ULTIMATE.start_main_~r~0#1|) (= (* 2 .cse0) |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 .cse5)))) [2022-07-22 16:18:55,740 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-22 16:18:55,740 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-22 16:18:55,740 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2022-07-22 16:18:55,740 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-22 16:18:55,740 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 1) [2022-07-22 16:18:55,740 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 1) (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 1)) [2022-07-22 16:18:55,740 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (<= 1 .cse0)) (.cse2 (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse6)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse6)) (.cse5 (< 0 (+ (div (+ (* (- 1) |ULTIMATE.start_main_~r~0#1|) 1) 4294967296) 1)))) (or (and (<= .cse0 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 (<= .cse0 |ULTIMATE.start_main_~r~0#1|) (= (* 2 .cse0) |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 .cse5)))) [2022-07-22 16:18:55,740 INFO L895 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (<= 1 .cse0)) (.cse2 (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse6)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse6)) (.cse5 (< 0 (+ (div (+ (* (- 1) |ULTIMATE.start_main_~r~0#1|) 1) 4294967296) 1)))) (or (and (<= .cse0 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 (<= .cse0 |ULTIMATE.start_main_~r~0#1|) (= (* 2 .cse0) |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 .cse5)))) [2022-07-22 16:18:55,740 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-22 16:18:55,740 INFO L902 garLoopResultBuilder]: At program point L62(lines 22 63) the Hoare annotation is: true [2022-07-22 16:18:55,741 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-07-22 16:18:55,741 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2022-07-22 16:18:55,741 INFO L899 garLoopResultBuilder]: For program point L54-2(lines 22 63) no Hoare annotation was computed. [2022-07-22 16:18:55,741 INFO L895 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse2 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse1 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse2))) (or (and (<= .cse0 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) (<= 1 .cse0) (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|) .cse1 (= |ULTIMATE.start_main_~r~0#1| .cse2)) (let ((.cse3 (mod |ULTIMATE.start_main_~d~0#1| 4294967296))) (and (= (* |ULTIMATE.start_main_~p~0#1| .cse3) |ULTIMATE.start_main_~d~0#1|) (< |ULTIMATE.start_main_~d~0#1| 4294967296) (<= (div |ULTIMATE.start_main_~d~0#1| (- 4294967296)) (div (+ (* (- 1) |ULTIMATE.start_main_~d~0#1|) 1) 4294967296)) (< .cse2 (* 2 .cse3)) .cse1 (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse2) (<= .cse3 .cse2) (<= 0 |ULTIMATE.start_main_~d~0#1|)))))) [2022-07-22 16:18:55,741 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (<= 1 .cse0)) (.cse2 (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse6)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse6)) (.cse5 (< 0 (+ (div (+ (* (- 1) |ULTIMATE.start_main_~r~0#1|) 1) 4294967296) 1)))) (or (and (<= .cse0 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 (<= .cse0 |ULTIMATE.start_main_~r~0#1|) (= (* 2 .cse0) |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 .cse5)))) [2022-07-22 16:18:55,741 INFO L902 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-07-22 16:18:55,741 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-07-22 16:18:55,741 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse2 (* |ULTIMATE.start_main_~q~0#1| .cse5)) (.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse3 (* |ULTIMATE.start_main_~p~0#1| .cse5))) (let ((.cse0 (<= .cse5 1)) (.cse7 (<= 1 .cse5)) (.cse6 (<= .cse5 |ULTIMATE.start_main_~r~0#1|)) (.cse4 (* 2 .cse5)) (.cse8 (= .cse3 |ULTIMATE.start_main_~d~0#1|)) (.cse9 (= (+ .cse2 |ULTIMATE.start_main_~r~0#1|) .cse1)) (.cse10 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (and .cse0 (= (+ |ULTIMATE.start_main_~d~0#1| .cse1) (+ .cse2 .cse3 |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) (not (<= .cse4 .cse1)) (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse1) (<= .cse5 .cse1) (not .cse6)) (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse5) .cse7 .cse8 .cse9 .cse10) (and .cse7 .cse6 (<= .cse1 1) (= .cse4 |ULTIMATE.start_main_~d~0#1|) .cse8 .cse9 .cse10))))) [2022-07-22 16:18:55,741 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse2 (* |ULTIMATE.start_main_~q~0#1| .cse5)) (.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse3 (* |ULTIMATE.start_main_~p~0#1| .cse5))) (let ((.cse0 (<= .cse5 1)) (.cse7 (<= 1 .cse5)) (.cse6 (<= .cse5 |ULTIMATE.start_main_~r~0#1|)) (.cse8 (= .cse3 |ULTIMATE.start_main_~d~0#1|)) (.cse4 (= (+ .cse2 |ULTIMATE.start_main_~r~0#1|) .cse1)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (and .cse0 (= (+ |ULTIMATE.start_main_~d~0#1| .cse1) (+ .cse2 .cse3 |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~q~0#1| 1) .cse4 (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse1) (<= .cse5 .cse1) (not .cse6)) (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse5) .cse7 .cse8 .cse4 .cse9) (and .cse7 .cse6 (<= .cse1 1) (= (* 2 .cse5) |ULTIMATE.start_main_~d~0#1|) .cse8 .cse4 .cse9))))) [2022-07-22 16:18:55,741 INFO L899 garLoopResultBuilder]: For program point L39(lines 36 44) no Hoare annotation was computed. [2022-07-22 16:18:55,741 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-07-22 16:18:55,741 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-22 16:18:55,742 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-07-22 16:18:55,742 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-07-22 16:18:55,742 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-07-22 16:18:55,742 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-07-22 16:18:55,742 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-07-22 16:18:55,742 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-07-22 16:18:55,742 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-07-22 16:18:55,742 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-07-22 16:18:55,745 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:18:55,747 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 16:18:55,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 04:18:55 BoogieIcfgContainer [2022-07-22 16:18:55,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 16:18:55,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 16:18:55,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 16:18:55,766 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 16:18:55,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:15:24" (3/4) ... [2022-07-22 16:18:55,771 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 16:18:55,777 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-22 16:18:55,777 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-22 16:18:55,780 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-22 16:18:55,781 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-22 16:18:55,781 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 16:18:55,781 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 16:18:55,815 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 16:18:55,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 16:18:55,816 INFO L158 Benchmark]: Toolchain (without parser) took 211879.48ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 59.6MB in the beginning and 67.7MB in the end (delta: -8.1MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2022-07-22 16:18:55,816 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 76.2MB in the beginning and 76.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 16:18:55,816 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.52ms. Allocated memory is still 96.5MB. Free memory was 59.5MB in the beginning and 72.4MB in the end (delta: -12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 16:18:55,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.78ms. Allocated memory is still 96.5MB. Free memory was 72.4MB in the beginning and 70.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 16:18:55,817 INFO L158 Benchmark]: Boogie Preprocessor took 21.42ms. Allocated memory is still 96.5MB. Free memory was 70.7MB in the beginning and 69.8MB in the end (delta: 918.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 16:18:55,817 INFO L158 Benchmark]: RCFGBuilder took 314.27ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 59.8MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 16:18:55,818 INFO L158 Benchmark]: TraceAbstraction took 211144.27ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 59.3MB in the beginning and 70.8MB in the end (delta: -11.6MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2022-07-22 16:18:55,818 INFO L158 Benchmark]: Witness Printer took 49.02ms. Allocated memory is still 142.6MB. Free memory was 70.8MB in the beginning and 67.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 16:18:55,821 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 96.5MB. Free memory was 76.2MB in the beginning and 76.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.52ms. Allocated memory is still 96.5MB. Free memory was 59.5MB in the beginning and 72.4MB in the end (delta: -12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.78ms. Allocated memory is still 96.5MB. Free memory was 72.4MB in the beginning and 70.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.42ms. Allocated memory is still 96.5MB. Free memory was 70.7MB in the beginning and 69.8MB in the end (delta: 918.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 314.27ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 59.8MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 211144.27ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 59.3MB in the beginning and 70.8MB in the end (delta: -11.6MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. * Witness Printer took 49.02ms. Allocated memory is still 142.6MB. Free memory was 70.8MB in the beginning and 67.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 211.0s, OverallIterations: 11, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 50.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 257 SdHoareTripleChecker+Valid, 24.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213 mSDsluCounter, 1408 SdHoareTripleChecker+Invalid, 24.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 68 IncrementalHoareTripleChecker+Unchecked, 1002 mSDsCounter, 269 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1848 IncrementalHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 269 mSolverCounterUnsat, 406 mSDtfsCounter, 1848 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 926 GetRequests, 799 SyntacticMatches, 9 SemanticMatches, 118 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 64.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=8, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 80 PreInvPairs, 105 NumberOfFragments, 840 HoareAnnotationTreeSize, 80 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 3037 FormulaSimplificationTreeSizeReductionInter, 3.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 153.3s InterpolantComputationTime, 600 NumberOfCodeBlocks, 600 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 930 ConstructedInterpolants, 0 QuantifiedInterpolants, 5311 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1210 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 2011/2111 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((B % 4294967296 <= 1 && d == B % 4294967296) && 1 <= B % 4294967296) && p * (B % 4294967296) == d) && q * (B % 4294967296) + r == A % 4294967296) && r == A % 4294967296) && 0 < (-1 * r + 1) / 4294967296 + 1) || ((((((1 <= B % 4294967296 && B % 4294967296 <= r) && 2 * (B % 4294967296) == d) && p * (B % 4294967296) == d) && q * (B % 4294967296) + r == A % 4294967296) && r == A % 4294967296) && 0 < (-1 * r + 1) / 4294967296 + 1) RESULT: Ultimate proved your program to be correct! [2022-07-22 16:18:55,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE