./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/egcd3-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/egcd3-ll.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 bace92c84a29a0ed8ee50bd89ab369ef6b4277b3 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 04:47:16,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 04:47:16,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 04:47:16,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 04:47:16,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 04:47:16,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 04:47:16,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 04:47:16,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 04:47:16,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 04:47:16,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 04:47:16,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 04:47:16,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 04:47:16,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 04:47:16,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 04:47:16,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 04:47:16,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 04:47:16,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 04:47:16,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 04:47:16,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 04:47:16,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 04:47:16,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 04:47:16,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 04:47:16,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 04:47:16,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 04:47:16,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 04:47:16,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 04:47:16,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 04:47:16,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 04:47:16,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 04:47:16,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 04:47:16,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 04:47:16,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 04:47:16,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 04:47:16,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 04:47:16,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 04:47:16,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 04:47:16,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 04:47:16,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 04:47:16,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 04:47:16,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 04:47:16,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 04:47:16,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 04:47:16,603 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 04:47:16,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 04:47:16,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 04:47:16,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 04:47:16,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 04:47:16,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 04:47:16,606 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 04:47:16,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 04:47:16,607 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 04:47:16,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 04:47:16,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 04:47:16,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 04:47:16,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 04:47:16,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 04:47:16,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 04:47:16,608 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 04:47:16,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 04:47:16,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 04:47:16,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 04:47:16,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 04:47:16,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 04:47:16,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 04:47:16,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 04:47:16,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 04:47:16,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 04:47:16,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 04:47:16,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 04:47:16,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 04:47:16,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 04:47:16,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 04:47:16,610 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bace92c84a29a0ed8ee50bd89ab369ef6b4277b3 [2021-08-26 04:47:16,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 04:47:16,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 04:47:16,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 04:47:16,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 04:47:16,892 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 04:47:16,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd3-ll.c [2021-08-26 04:47:16,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05702023e/b72d670636154feb9090a8fab744ab83/FLAG0f00b97a8 [2021-08-26 04:47:17,292 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 04:47:17,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd3-ll.c [2021-08-26 04:47:17,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05702023e/b72d670636154feb9090a8fab744ab83/FLAG0f00b97a8 [2021-08-26 04:47:17,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05702023e/b72d670636154feb9090a8fab744ab83 [2021-08-26 04:47:17,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 04:47:17,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 04:47:17,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 04:47:17,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 04:47:17,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 04:47:17,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:47:17" (1/1) ... [2021-08-26 04:47:17,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bcef494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17, skipping insertion in model container [2021-08-26 04:47:17,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:47:17" (1/1) ... [2021-08-26 04:47:17,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 04:47:17,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 04:47:17,435 WARN L228 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/egcd3-ll.c[490,503] [2021-08-26 04:47:17,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 04:47:17,464 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 04:47:17,503 WARN L228 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/egcd3-ll.c[490,503] [2021-08-26 04:47:17,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 04:47:17,535 INFO L208 MainTranslator]: Completed translation [2021-08-26 04:47:17,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17 WrapperNode [2021-08-26 04:47:17,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 04:47:17,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 04:47:17,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 04:47:17,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 04:47:17,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17" (1/1) ... [2021-08-26 04:47:17,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17" (1/1) ... [2021-08-26 04:47:17,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 04:47:17,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 04:47:17,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 04:47:17,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 04:47:17,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17" (1/1) ... [2021-08-26 04:47:17,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17" (1/1) ... [2021-08-26 04:47:17,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17" (1/1) ... [2021-08-26 04:47:17,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17" (1/1) ... [2021-08-26 04:47:17,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17" (1/1) ... [2021-08-26 04:47:17,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17" (1/1) ... [2021-08-26 04:47:17,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17" (1/1) ... [2021-08-26 04:47:17,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 04:47:17,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 04:47:17,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 04:47:17,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 04:47:17,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17" (1/1) ... [2021-08-26 04:47:17,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 04:47:17,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:17,634 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) [2021-08-26 04:47:17,653 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 [2021-08-26 04:47:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 04:47:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 04:47:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 04:47:17,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 04:47:17,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 04:47:17,911 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-08-26 04:47:17,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:47:17 BoogieIcfgContainer [2021-08-26 04:47:17,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 04:47:17,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 04:47:17,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 04:47:17,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 04:47:17,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 04:47:17" (1/3) ... [2021-08-26 04:47:17,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5899dd9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:47:17, skipping insertion in model container [2021-08-26 04:47:17,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:17" (2/3) ... [2021-08-26 04:47:17,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5899dd9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:47:17, skipping insertion in model container [2021-08-26 04:47:17,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:47:17" (3/3) ... [2021-08-26 04:47:17,917 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll.c [2021-08-26 04:47:17,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 04:47:17,920 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-08-26 04:47:17,949 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 04:47:17,953 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 04:47:17,953 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-26 04:47:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 36 states have internal predecessors, (52), 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) [2021-08-26 04:47:17,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 04:47:17,964 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:17,965 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:17,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:17,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:17,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1236053721, now seen corresponding path program 1 times [2021-08-26 04:47:17,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:17,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522752907] [2021-08-26 04:47:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:17,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:18,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:18,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522752907] [2021-08-26 04:47:18,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522752907] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:18,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:18,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 04:47:18,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041489588] [2021-08-26 04:47:18,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 04:47:18,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:18,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 04:47:18,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 04:47:18,065 INFO L87 Difference]: Start difference. First operand has 37 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 36 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:18,075 INFO L93 Difference]: Finished difference Result 71 states and 100 transitions. [2021-08-26 04:47:18,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 04:47:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-26 04:47:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:18,080 INFO L225 Difference]: With dead ends: 71 [2021-08-26 04:47:18,080 INFO L226 Difference]: Without dead ends: 33 [2021-08-26 04:47:18,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 04:47:18,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-26 04:47:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-08-26 04:47:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 32 states have internal predecessors, (35), 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) [2021-08-26 04:47:18,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-08-26 04:47:18,099 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 10 [2021-08-26 04:47:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:18,100 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-08-26 04:47:18,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:18,100 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-08-26 04:47:18,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 04:47:18,101 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:18,101 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:18,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 04:47:18,101 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:18,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:18,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1503549271, now seen corresponding path program 1 times [2021-08-26 04:47:18,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:18,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284992230] [2021-08-26 04:47:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:18,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:18,113 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:18,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785322240] [2021-08-26 04:47:18,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:18,114 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:18,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:18,115 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) [2021-08-26 04:47:18,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 04:47:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:18,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 04:47:18,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:18,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:18,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:18,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284992230] [2021-08-26 04:47:18,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:18,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785322240] [2021-08-26 04:47:18,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785322240] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:18,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:18,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 04:47:18,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95043219] [2021-08-26 04:47:18,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 04:47:18,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:18,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 04:47:18,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:18,325 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:18,389 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-08-26 04:47:18,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 04:47:18,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 04:47:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:18,390 INFO L225 Difference]: With dead ends: 60 [2021-08-26 04:47:18,390 INFO L226 Difference]: Without dead ends: 56 [2021-08-26 04:47:18,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:47:18,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-26 04:47:18,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 35. [2021-08-26 04:47:18,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 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) [2021-08-26 04:47:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-08-26 04:47:18,395 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 11 [2021-08-26 04:47:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:18,396 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-08-26 04:47:18,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-08-26 04:47:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 04:47:18,396 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:18,396 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:18,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:18,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:18,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:18,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1815125850, now seen corresponding path program 1 times [2021-08-26 04:47:18,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:18,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137244338] [2021-08-26 04:47:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:18,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:18,627 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:18,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437329055] [2021-08-26 04:47:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:18,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:18,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:18,644 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) [2021-08-26 04:47:18,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 04:47:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:18,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 04:47:18,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:18,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:18,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137244338] [2021-08-26 04:47:18,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:18,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437329055] [2021-08-26 04:47:18,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437329055] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:18,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:18,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 04:47:18,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889028041] [2021-08-26 04:47:18,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 04:47:18,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:18,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 04:47:18,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 04:47:18,779 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-08-26 04:47:18,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:18,813 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-08-26 04:47:18,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 04:47:18,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 04:47:18,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:18,814 INFO L225 Difference]: With dead ends: 56 [2021-08-26 04:47:18,815 INFO L226 Difference]: Without dead ends: 54 [2021-08-26 04:47:18,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:18,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-26 04:47:18,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2021-08-26 04:47:18,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 46 states have internal predecessors, (54), 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) [2021-08-26 04:47:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-08-26 04:47:18,820 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 13 [2021-08-26 04:47:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:18,820 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-08-26 04:47:18,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-08-26 04:47:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-08-26 04:47:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 04:47:18,821 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:18,821 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:18,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:19,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-26 04:47:19,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:19,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:19,026 INFO L82 PathProgramCache]: Analyzing trace with hash -579062807, now seen corresponding path program 1 times [2021-08-26 04:47:19,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:19,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363334748] [2021-08-26 04:47:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:19,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:19,036 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:19,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712792269] [2021-08-26 04:47:19,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:19,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:19,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:19,053 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) [2021-08-26 04:47:19,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 04:47:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:19,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 04:47:19,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:19,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:19,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363334748] [2021-08-26 04:47:19,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:19,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712792269] [2021-08-26 04:47:19,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712792269] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:19,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:19,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-26 04:47:19,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323534565] [2021-08-26 04:47:19,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 04:47:19,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:19,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 04:47:19,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:47:19,292 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-08-26 04:47:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:19,537 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2021-08-26 04:47:19,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 04:47:19,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-26 04:47:19,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:19,538 INFO L225 Difference]: With dead ends: 71 [2021-08-26 04:47:19,538 INFO L226 Difference]: Without dead ends: 69 [2021-08-26 04:47:19,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 205.3ms TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-08-26 04:47:19,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-08-26 04:47:19,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2021-08-26 04:47:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 46 states have internal predecessors, (53), 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) [2021-08-26 04:47:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-08-26 04:47:19,542 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 15 [2021-08-26 04:47:19,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:19,543 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-08-26 04:47:19,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-08-26 04:47:19,543 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-08-26 04:47:19,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 04:47:19,543 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:19,543 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:19,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:19,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:19,758 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:19,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:19,758 INFO L82 PathProgramCache]: Analyzing trace with hash -977126190, now seen corresponding path program 1 times [2021-08-26 04:47:19,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:19,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955270709] [2021-08-26 04:47:19,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:19,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:19,768 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:19,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945811485] [2021-08-26 04:47:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:19,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:19,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:19,779 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) [2021-08-26 04:47:19,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 04:47:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:19,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 04:47:19,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:19,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:19,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955270709] [2021-08-26 04:47:19,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:19,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945811485] [2021-08-26 04:47:19,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945811485] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:19,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:19,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:47:19,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038164679] [2021-08-26 04:47:19,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:47:19,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:19,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:47:19,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:47:19,957 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:20,073 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2021-08-26 04:47:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 04:47:20,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-26 04:47:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:20,076 INFO L225 Difference]: With dead ends: 136 [2021-08-26 04:47:20,076 INFO L226 Difference]: Without dead ends: 132 [2021-08-26 04:47:20,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-26 04:47:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-26 04:47:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 71. [2021-08-26 04:47:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 70 states have internal predecessors, (87), 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) [2021-08-26 04:47:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2021-08-26 04:47:20,083 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 16 [2021-08-26 04:47:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:20,083 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2021-08-26 04:47:20,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:20,083 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2021-08-26 04:47:20,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 04:47:20,084 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:20,084 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:20,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:20,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:20,301 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:20,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:20,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1866548172, now seen corresponding path program 1 times [2021-08-26 04:47:20,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:20,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372424338] [2021-08-26 04:47:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:20,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:20,321 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:20,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765915150] [2021-08-26 04:47:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:20,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:20,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:20,322 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) [2021-08-26 04:47:20,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 04:47:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:20,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 04:47:20,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:20,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:20,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372424338] [2021-08-26 04:47:20,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:20,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765915150] [2021-08-26 04:47:20,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765915150] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:20,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:20,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 04:47:20,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487643112] [2021-08-26 04:47:20,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:47:20,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:20,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:47:20,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:47:20,555 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2021-08-26 04:47:20,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:20,676 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2021-08-26 04:47:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 04:47:20,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-26 04:47:20,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:20,678 INFO L225 Difference]: With dead ends: 91 [2021-08-26 04:47:20,678 INFO L226 Difference]: Without dead ends: 89 [2021-08-26 04:47:20,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 83.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-26 04:47:20,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-26 04:47:20,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2021-08-26 04:47:20,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 79 states have internal predecessors, (98), 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) [2021-08-26 04:47:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2021-08-26 04:47:20,691 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 17 [2021-08-26 04:47:20,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:20,691 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2021-08-26 04:47:20,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2021-08-26 04:47:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2021-08-26 04:47:20,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 04:47:20,692 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:20,692 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:20,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:20,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:20,912 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:20,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:20,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1566281359, now seen corresponding path program 1 times [2021-08-26 04:47:20,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:20,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319961171] [2021-08-26 04:47:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:20,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:20,921 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:20,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [627079004] [2021-08-26 04:47:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:20,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:20,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:20,923 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) [2021-08-26 04:47:20,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 04:47:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:21,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-26 04:47:21,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:21,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:21,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319961171] [2021-08-26 04:47:21,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:21,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627079004] [2021-08-26 04:47:21,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627079004] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:21,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:21,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:47:21,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043003924] [2021-08-26 04:47:21,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:47:21,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:21,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:47:21,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:47:21,222 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-08-26 04:47:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:21,305 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2021-08-26 04:47:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 04:47:21,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-26 04:47:21,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:21,306 INFO L225 Difference]: With dead ends: 131 [2021-08-26 04:47:21,306 INFO L226 Difference]: Without dead ends: 129 [2021-08-26 04:47:21,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:47:21,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-08-26 04:47:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2021-08-26 04:47:21,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.3271028037383177) internal successors, (142), 111 states have internal predecessors, (142), 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) [2021-08-26 04:47:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 142 transitions. [2021-08-26 04:47:21,315 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 142 transitions. Word has length 18 [2021-08-26 04:47:21,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:21,315 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 142 transitions. [2021-08-26 04:47:21,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-08-26 04:47:21,316 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 142 transitions. [2021-08-26 04:47:21,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-26 04:47:21,316 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:21,316 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:21,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:21,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:21,534 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:21,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:21,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1543378865, now seen corresponding path program 1 times [2021-08-26 04:47:21,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:21,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798421050] [2021-08-26 04:47:21,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:21,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:21,568 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:21,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538193772] [2021-08-26 04:47:21,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:21,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:21,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:21,572 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) [2021-08-26 04:47:21,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 04:47:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:21,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 04:47:21,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:21,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:21,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798421050] [2021-08-26 04:47:21,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:21,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538193772] [2021-08-26 04:47:21,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538193772] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:21,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:21,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 04:47:21,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402859540] [2021-08-26 04:47:21,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 04:47:21,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:21,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 04:47:21,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 04:47:21,798 INFO L87 Difference]: Start difference. First operand 112 states and 142 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-08-26 04:47:21,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:21,841 INFO L93 Difference]: Finished difference Result 222 states and 283 transitions. [2021-08-26 04:47:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 04:47:21,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-08-26 04:47:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:21,843 INFO L225 Difference]: With dead ends: 222 [2021-08-26 04:47:21,843 INFO L226 Difference]: Without dead ends: 220 [2021-08-26 04:47:21,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:21,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-08-26 04:47:21,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 160. [2021-08-26 04:47:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.2967741935483872) internal successors, (201), 159 states have internal predecessors, (201), 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) [2021-08-26 04:47:21,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2021-08-26 04:47:21,860 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 19 [2021-08-26 04:47:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:21,860 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2021-08-26 04:47:21,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-08-26 04:47:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2021-08-26 04:47:21,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 04:47:21,861 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:21,861 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:21,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:22,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:22,081 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:22,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:22,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1957989266, now seen corresponding path program 1 times [2021-08-26 04:47:22,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:22,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562186522] [2021-08-26 04:47:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:22,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:22,089 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:22,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333423827] [2021-08-26 04:47:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:22,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:22,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:22,105 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) [2021-08-26 04:47:22,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 04:47:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:22,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 04:47:22,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:22,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:22,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562186522] [2021-08-26 04:47:22,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:22,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333423827] [2021-08-26 04:47:22,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333423827] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:22,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:22,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 04:47:22,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331326205] [2021-08-26 04:47:22,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 04:47:22,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:22,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 04:47:22,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:47:22,410 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-08-26 04:47:22,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:22,512 INFO L93 Difference]: Finished difference Result 175 states and 210 transitions. [2021-08-26 04:47:22,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 04:47:22,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-08-26 04:47:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:22,513 INFO L225 Difference]: With dead ends: 175 [2021-08-26 04:47:22,513 INFO L226 Difference]: Without dead ends: 173 [2021-08-26 04:47:22,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:47:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-08-26 04:47:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 160. [2021-08-26 04:47:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.2838709677419355) internal successors, (199), 159 states have internal predecessors, (199), 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) [2021-08-26 04:47:22,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 199 transitions. [2021-08-26 04:47:22,524 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 199 transitions. Word has length 20 [2021-08-26 04:47:22,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:22,532 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 199 transitions. [2021-08-26 04:47:22,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-08-26 04:47:22,532 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 199 transitions. [2021-08-26 04:47:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 04:47:22,533 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:22,533 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:22,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:22,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-08-26 04:47:22,750 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:22,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:22,750 INFO L82 PathProgramCache]: Analyzing trace with hash 432166197, now seen corresponding path program 1 times [2021-08-26 04:47:22,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:22,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481910323] [2021-08-26 04:47:22,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:22,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:22,758 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:22,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218790586] [2021-08-26 04:47:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:22,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:22,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:22,760 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:22,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-26 04:47:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:22,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 04:47:22,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:23,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:23,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481910323] [2021-08-26 04:47:23,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:23,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218790586] [2021-08-26 04:47:23,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218790586] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:23,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:23,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 04:47:23,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482977211] [2021-08-26 04:47:23,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 04:47:23,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:23,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 04:47:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:47:23,037 INFO L87 Difference]: Start difference. First operand 160 states and 199 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-08-26 04:47:23,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:23,191 INFO L93 Difference]: Finished difference Result 273 states and 324 transitions. [2021-08-26 04:47:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 04:47:23,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-26 04:47:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:23,193 INFO L225 Difference]: With dead ends: 273 [2021-08-26 04:47:23,193 INFO L226 Difference]: Without dead ends: 271 [2021-08-26 04:47:23,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 85.1ms TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-08-26 04:47:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-08-26 04:47:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 194. [2021-08-26 04:47:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.2751322751322751) internal successors, (241), 193 states have internal predecessors, (241), 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) [2021-08-26 04:47:23,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 241 transitions. [2021-08-26 04:47:23,203 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 241 transitions. Word has length 22 [2021-08-26 04:47:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:23,203 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 241 transitions. [2021-08-26 04:47:23,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-08-26 04:47:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 241 transitions. [2021-08-26 04:47:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 04:47:23,204 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:23,204 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:23,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:23,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-26 04:47:23,421 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:23,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:23,422 INFO L82 PathProgramCache]: Analyzing trace with hash 50113094, now seen corresponding path program 2 times [2021-08-26 04:47:23,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:23,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684918312] [2021-08-26 04:47:23,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:23,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:23,429 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:23,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894024887] [2021-08-26 04:47:23,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:47:23,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:23,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:23,430 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:23,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-26 04:47:23,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:47:23,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:23,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 04:47:23,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:23,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:23,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684918312] [2021-08-26 04:47:23,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:23,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894024887] [2021-08-26 04:47:23,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894024887] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:23,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:23,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 04:47:23,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333829727] [2021-08-26 04:47:23,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 04:47:23,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 04:47:23,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:23,644 INFO L87 Difference]: Start difference. First operand 194 states and 241 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:23,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:23,697 INFO L93 Difference]: Finished difference Result 287 states and 351 transitions. [2021-08-26 04:47:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 04:47:23,697 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-08-26 04:47:23,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:23,698 INFO L225 Difference]: With dead ends: 287 [2021-08-26 04:47:23,698 INFO L226 Difference]: Without dead ends: 205 [2021-08-26 04:47:23,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:47:23,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-08-26 04:47:23,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 151. [2021-08-26 04:47:23,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 146 states have (on average 1.226027397260274) internal successors, (179), 150 states have internal predecessors, (179), 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) [2021-08-26 04:47:23,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 179 transitions. [2021-08-26 04:47:23,707 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 179 transitions. Word has length 23 [2021-08-26 04:47:23,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:23,707 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 179 transitions. [2021-08-26 04:47:23,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:23,708 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 179 transitions. [2021-08-26 04:47:23,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-26 04:47:23,708 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:23,708 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:23,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:23,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-26 04:47:23,925 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:23,926 INFO L82 PathProgramCache]: Analyzing trace with hash -710666819, now seen corresponding path program 1 times [2021-08-26 04:47:23,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:23,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365301612] [2021-08-26 04:47:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:23,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:23,932 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:23,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379142380] [2021-08-26 04:47:23,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:23,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:23,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:23,934 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:23,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-26 04:47:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:24,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 52 conjunts are in the unsatisfiable core [2021-08-26 04:47:24,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:24,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:24,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365301612] [2021-08-26 04:47:24,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:24,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379142380] [2021-08-26 04:47:24,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379142380] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:24,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:24,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 04:47:24,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197939985] [2021-08-26 04:47:24,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 04:47:24,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:24,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 04:47:24,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:47:24,724 INFO L87 Difference]: Start difference. First operand 151 states and 179 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) [2021-08-26 04:47:25,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:25,057 INFO L93 Difference]: Finished difference Result 222 states and 255 transitions. [2021-08-26 04:47:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 04:47:25,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-08-26 04:47:25,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:25,058 INFO L225 Difference]: With dead ends: 222 [2021-08-26 04:47:25,058 INFO L226 Difference]: Without dead ends: 214 [2021-08-26 04:47:25,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 210.3ms TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-08-26 04:47:25,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-08-26 04:47:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 168. [2021-08-26 04:47:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.2147239263803682) internal successors, (198), 167 states have internal predecessors, (198), 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) [2021-08-26 04:47:25,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 198 transitions. [2021-08-26 04:47:25,067 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 198 transitions. Word has length 28 [2021-08-26 04:47:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:25,067 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 198 transitions. [2021-08-26 04:47:25,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) [2021-08-26 04:47:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 198 transitions. [2021-08-26 04:47:25,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-26 04:47:25,068 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:25,068 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:25,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:25,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-26 04:47:25,288 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:25,289 INFO L82 PathProgramCache]: Analyzing trace with hash -584499604, now seen corresponding path program 1 times [2021-08-26 04:47:25,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:25,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720838807] [2021-08-26 04:47:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:25,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:25,307 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:25,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928107543] [2021-08-26 04:47:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:25,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:25,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:25,313 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:25,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-26 04:47:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:25,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-26 04:47:25,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:25,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:25,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720838807] [2021-08-26 04:47:25,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:25,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928107543] [2021-08-26 04:47:25,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928107543] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:25,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:25,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 04:47:25,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888246475] [2021-08-26 04:47:25,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 04:47:25,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:25,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 04:47:25,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:47:25,818 INFO L87 Difference]: Start difference. First operand 168 states and 198 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) [2021-08-26 04:47:26,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:26,083 INFO L93 Difference]: Finished difference Result 217 states and 252 transitions. [2021-08-26 04:47:26,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 04:47:26,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-08-26 04:47:26,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:26,084 INFO L225 Difference]: With dead ends: 217 [2021-08-26 04:47:26,084 INFO L226 Difference]: Without dead ends: 215 [2021-08-26 04:47:26,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 208.4ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-08-26 04:47:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-08-26 04:47:26,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 186. [2021-08-26 04:47:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 181 states have (on average 1.2099447513812154) internal successors, (219), 185 states have internal predecessors, (219), 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) [2021-08-26 04:47:26,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 219 transitions. [2021-08-26 04:47:26,101 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 219 transitions. Word has length 28 [2021-08-26 04:47:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:26,101 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 219 transitions. [2021-08-26 04:47:26,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) [2021-08-26 04:47:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 219 transitions. [2021-08-26 04:47:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 04:47:26,102 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:26,102 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:26,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-08-26 04:47:26,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-26 04:47:26,318 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:26,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:26,319 INFO L82 PathProgramCache]: Analyzing trace with hash 878393524, now seen corresponding path program 2 times [2021-08-26 04:47:26,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:26,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783342183] [2021-08-26 04:47:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:26,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:26,331 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:26,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996772377] [2021-08-26 04:47:26,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:47:26,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:26,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:26,333 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:26,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-26 04:47:26,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:47:26,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:26,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 04:47:26,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:26,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:26,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783342183] [2021-08-26 04:47:26,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:26,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996772377] [2021-08-26 04:47:26,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996772377] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:26,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:26,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 04:47:26,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539157779] [2021-08-26 04:47:26,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 04:47:26,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:26,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 04:47:26,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:47:26,729 INFO L87 Difference]: Start difference. First operand 186 states and 219 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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) [2021-08-26 04:47:26,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:26,951 INFO L93 Difference]: Finished difference Result 407 states and 478 transitions. [2021-08-26 04:47:26,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 04:47:26,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-26 04:47:26,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:26,952 INFO L225 Difference]: With dead ends: 407 [2021-08-26 04:47:26,953 INFO L226 Difference]: Without dead ends: 403 [2021-08-26 04:47:26,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-08-26 04:47:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-08-26 04:47:26,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 226. [2021-08-26 04:47:26,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.2307692307692308) internal successors, (272), 225 states have internal predecessors, (272), 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) [2021-08-26 04:47:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 272 transitions. [2021-08-26 04:47:26,966 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 272 transitions. Word has length 33 [2021-08-26 04:47:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:26,966 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 272 transitions. [2021-08-26 04:47:26,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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) [2021-08-26 04:47:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 272 transitions. [2021-08-26 04:47:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 04:47:26,967 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:26,967 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:26,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:27,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-26 04:47:27,184 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:27,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1004560739, now seen corresponding path program 1 times [2021-08-26 04:47:27,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:27,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902359307] [2021-08-26 04:47:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:27,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:27,191 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:27,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259255100] [2021-08-26 04:47:27,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:27,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:27,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:27,209 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:27,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-26 04:47:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:27,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 04:47:27,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:27,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:27,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902359307] [2021-08-26 04:47:27,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:27,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259255100] [2021-08-26 04:47:27,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259255100] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:27,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:27,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 04:47:27,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444386771] [2021-08-26 04:47:27,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 04:47:27,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:27,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 04:47:27,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:47:27,697 INFO L87 Difference]: Start difference. First operand 226 states and 272 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-26 04:47:27,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:27,998 INFO L93 Difference]: Finished difference Result 385 states and 454 transitions. [2021-08-26 04:47:27,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-26 04:47:27,999 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-26 04:47:27,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:28,000 INFO L225 Difference]: With dead ends: 385 [2021-08-26 04:47:28,000 INFO L226 Difference]: Without dead ends: 383 [2021-08-26 04:47:28,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2021-08-26 04:47:28,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-08-26 04:47:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 266. [2021-08-26 04:47:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 261 states have (on average 1.2260536398467432) internal successors, (320), 265 states have internal predecessors, (320), 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) [2021-08-26 04:47:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 320 transitions. [2021-08-26 04:47:28,015 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 320 transitions. Word has length 33 [2021-08-26 04:47:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:28,016 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 320 transitions. [2021-08-26 04:47:28,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-08-26 04:47:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 320 transitions. [2021-08-26 04:47:28,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-26 04:47:28,016 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:28,016 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:28,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:28,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:28,234 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:28,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:28,234 INFO L82 PathProgramCache]: Analyzing trace with hash -741882838, now seen corresponding path program 1 times [2021-08-26 04:47:28,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:28,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335897717] [2021-08-26 04:47:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:28,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:28,240 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:28,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669341559] [2021-08-26 04:47:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:28,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:28,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:28,241 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:28,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-26 04:47:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:28,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 04:47:28,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-26 04:47:28,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:28,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335897717] [2021-08-26 04:47:28,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:28,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669341559] [2021-08-26 04:47:28,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669341559] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:28,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:28,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 04:47:28,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718867511] [2021-08-26 04:47:28,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 04:47:28,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 04:47:28,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:28,619 INFO L87 Difference]: Start difference. First operand 266 states and 320 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-08-26 04:47:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:28,660 INFO L93 Difference]: Finished difference Result 476 states and 578 transitions. [2021-08-26 04:47:28,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 04:47:28,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-08-26 04:47:28,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:28,661 INFO L225 Difference]: With dead ends: 476 [2021-08-26 04:47:28,662 INFO L226 Difference]: Without dead ends: 283 [2021-08-26 04:47:28,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:47:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-08-26 04:47:28,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 257. [2021-08-26 04:47:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 252 states have (on average 1.2222222222222223) internal successors, (308), 256 states have internal predecessors, (308), 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) [2021-08-26 04:47:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 308 transitions. [2021-08-26 04:47:28,684 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 308 transitions. Word has length 34 [2021-08-26 04:47:28,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:28,684 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 308 transitions. [2021-08-26 04:47:28,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-08-26 04:47:28,684 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 308 transitions. [2021-08-26 04:47:28,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-26 04:47:28,685 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:28,685 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:28,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:28,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-26 04:47:28,901 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:28,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:28,901 INFO L82 PathProgramCache]: Analyzing trace with hash -835022368, now seen corresponding path program 2 times [2021-08-26 04:47:28,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:28,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991724219] [2021-08-26 04:47:28,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:28,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:28,908 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:28,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318564777] [2021-08-26 04:47:28,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:47:28,909 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:28,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:28,910 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:28,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-26 04:47:29,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-26 04:47:29,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:29,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 04:47:29,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-26 04:47:29,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:29,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991724219] [2021-08-26 04:47:29,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:29,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318564777] [2021-08-26 04:47:29,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318564777] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:29,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:29,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 04:47:29,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035728778] [2021-08-26 04:47:29,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 04:47:29,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:29,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 04:47:29,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 04:47:29,307 INFO L87 Difference]: Start difference. First operand 257 states and 308 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:29,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:29,362 INFO L93 Difference]: Finished difference Result 297 states and 356 transitions. [2021-08-26 04:47:29,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 04:47:29,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-08-26 04:47:29,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:29,364 INFO L225 Difference]: With dead ends: 297 [2021-08-26 04:47:29,364 INFO L226 Difference]: Without dead ends: 295 [2021-08-26 04:47:29,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-08-26 04:47:29,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 284. [2021-08-26 04:47:29,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 279 states have (on average 1.2222222222222223) internal successors, (341), 283 states have internal predecessors, (341), 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) [2021-08-26 04:47:29,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 341 transitions. [2021-08-26 04:47:29,380 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 341 transitions. Word has length 34 [2021-08-26 04:47:29,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:29,380 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 341 transitions. [2021-08-26 04:47:29,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:29,380 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 341 transitions. [2021-08-26 04:47:29,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 04:47:29,381 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:29,381 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:29,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:29,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-26 04:47:29,597 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:29,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1985668623, now seen corresponding path program 1 times [2021-08-26 04:47:29,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:29,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034663413] [2021-08-26 04:47:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:29,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:29,604 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:29,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198057625] [2021-08-26 04:47:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:29,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:29,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:29,606 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:29,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-26 04:47:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:29,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 04:47:29,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-26 04:47:30,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:30,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034663413] [2021-08-26 04:47:30,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:30,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198057625] [2021-08-26 04:47:30,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198057625] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:30,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:30,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 04:47:30,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887097376] [2021-08-26 04:47:30,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 04:47:30,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:30,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 04:47:30,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:47:30,043 INFO L87 Difference]: Start difference. First operand 284 states and 341 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:30,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:30,141 INFO L93 Difference]: Finished difference Result 286 states and 342 transitions. [2021-08-26 04:47:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 04:47:30,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-08-26 04:47:30,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:30,142 INFO L225 Difference]: With dead ends: 286 [2021-08-26 04:47:30,143 INFO L226 Difference]: Without dead ends: 282 [2021-08-26 04:47:30,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 53.3ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:47:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-08-26 04:47:30,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 154. [2021-08-26 04:47:30,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 150 states have (on average 1.1533333333333333) internal successors, (173), 153 states have internal predecessors, (173), 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) [2021-08-26 04:47:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 173 transitions. [2021-08-26 04:47:30,157 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 173 transitions. Word has length 35 [2021-08-26 04:47:30,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:30,157 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 173 transitions. [2021-08-26 04:47:30,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:30,158 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 173 transitions. [2021-08-26 04:47:30,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 04:47:30,158 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:30,158 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:30,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:30,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-26 04:47:30,373 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:30,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:30,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1261910412, now seen corresponding path program 1 times [2021-08-26 04:47:30,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:30,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285824873] [2021-08-26 04:47:30,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:30,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:30,383 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:30,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271793795] [2021-08-26 04:47:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:30,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:30,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:30,387 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:30,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-26 04:47:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:30,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 70 conjunts are in the unsatisfiable core [2021-08-26 04:47:30,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:31,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:31,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285824873] [2021-08-26 04:47:31,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:31,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271793795] [2021-08-26 04:47:31,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271793795] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:31,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:31,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-08-26 04:47:31,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899318682] [2021-08-26 04:47:31,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-26 04:47:31,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:31,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-26 04:47:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-08-26 04:47:31,975 INFO L87 Difference]: Start difference. First operand 154 states and 173 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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) [2021-08-26 04:47:32,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:32,800 INFO L93 Difference]: Finished difference Result 283 states and 312 transitions. [2021-08-26 04:47:32,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-26 04:47:32,800 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-26 04:47:32,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:32,802 INFO L225 Difference]: With dead ends: 283 [2021-08-26 04:47:32,802 INFO L226 Difference]: Without dead ends: 281 [2021-08-26 04:47:32,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 705.6ms TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2021-08-26 04:47:32,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-08-26 04:47:32,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 145. [2021-08-26 04:47:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 141 states have (on average 1.1560283687943262) internal successors, (163), 144 states have internal predecessors, (163), 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) [2021-08-26 04:47:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 163 transitions. [2021-08-26 04:47:32,818 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 163 transitions. Word has length 37 [2021-08-26 04:47:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:32,818 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 163 transitions. [2021-08-26 04:47:32,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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) [2021-08-26 04:47:32,818 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 163 transitions. [2021-08-26 04:47:32,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 04:47:32,819 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:32,819 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-26 04:47:32,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-08-26 04:47:33,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:33,033 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:33,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:33,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1353666624, now seen corresponding path program 1 times [2021-08-26 04:47:33,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:33,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125657485] [2021-08-26 04:47:33,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:33,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:33,039 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:33,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616190249] [2021-08-26 04:47:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:33,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:33,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:33,053 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:33,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-26 04:47:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:33,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 66 conjunts are in the unsatisfiable core [2021-08-26 04:47:33,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:34,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:34,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125657485] [2021-08-26 04:47:34,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:34,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616190249] [2021-08-26 04:47:34,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616190249] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:34,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:34,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-08-26 04:47:34,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085724150] [2021-08-26 04:47:34,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 04:47:34,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:34,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 04:47:34,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-26 04:47:34,447 INFO L87 Difference]: Start difference. First operand 145 states and 163 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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) [2021-08-26 04:47:34,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:34,973 INFO L93 Difference]: Finished difference Result 319 states and 357 transitions. [2021-08-26 04:47:34,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 04:47:34,974 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-26 04:47:34,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:34,975 INFO L225 Difference]: With dead ends: 319 [2021-08-26 04:47:34,975 INFO L226 Difference]: Without dead ends: 311 [2021-08-26 04:47:34,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 299.9ms TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-08-26 04:47:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-08-26 04:47:35,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 175. [2021-08-26 04:47:35,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 171 states have (on average 1.152046783625731) internal successors, (197), 174 states have internal predecessors, (197), 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) [2021-08-26 04:47:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 197 transitions. [2021-08-26 04:47:35,008 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 197 transitions. Word has length 37 [2021-08-26 04:47:35,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:35,008 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 197 transitions. [2021-08-26 04:47:35,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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) [2021-08-26 04:47:35,008 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 197 transitions. [2021-08-26 04:47:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 04:47:35,009 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:35,009 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:35,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:35,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:35,227 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:35,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:35,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1479833839, now seen corresponding path program 2 times [2021-08-26 04:47:35,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:35,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753605128] [2021-08-26 04:47:35,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:35,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:35,241 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:35,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496383315] [2021-08-26 04:47:35,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:47:35,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:35,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:35,243 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:35,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-26 04:47:35,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:47:35,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:35,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-26 04:47:35,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:36,010 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:36,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:36,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753605128] [2021-08-26 04:47:36,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:36,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496383315] [2021-08-26 04:47:36,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496383315] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:36,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:36,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 04:47:36,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394276355] [2021-08-26 04:47:36,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 04:47:36,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:36,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 04:47:36,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:47:36,013 INFO L87 Difference]: Start difference. First operand 175 states and 197 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2021-08-26 04:47:36,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:36,346 INFO L93 Difference]: Finished difference Result 285 states and 320 transitions. [2021-08-26 04:47:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 04:47:36,346 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-26 04:47:36,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:36,347 INFO L225 Difference]: With dead ends: 285 [2021-08-26 04:47:36,347 INFO L226 Difference]: Without dead ends: 283 [2021-08-26 04:47:36,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 214.6ms TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-08-26 04:47:36,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-08-26 04:47:36,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 239. [2021-08-26 04:47:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 235 states have (on average 1.1617021276595745) internal successors, (273), 238 states have internal predecessors, (273), 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) [2021-08-26 04:47:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 273 transitions. [2021-08-26 04:47:36,375 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 273 transitions. Word has length 37 [2021-08-26 04:47:36,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:36,375 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 273 transitions. [2021-08-26 04:47:36,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2021-08-26 04:47:36,375 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 273 transitions. [2021-08-26 04:47:36,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-26 04:47:36,376 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:36,376 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-08-26 04:47:36,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-08-26 04:47:36,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-08-26 04:47:36,604 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:36,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:36,605 INFO L82 PathProgramCache]: Analyzing trace with hash 62559017, now seen corresponding path program 2 times [2021-08-26 04:47:36,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:36,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127016094] [2021-08-26 04:47:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:36,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:36,610 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:36,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994075885] [2021-08-26 04:47:36,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:47:36,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:36,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:36,612 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:36,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-26 04:47:37,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:47:37,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:37,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 80 conjunts are in the unsatisfiable core [2021-08-26 04:47:37,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:39,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:39,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127016094] [2021-08-26 04:47:39,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:39,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994075885] [2021-08-26 04:47:39,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994075885] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:39,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:39,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-08-26 04:47:39,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066158624] [2021-08-26 04:47:39,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-26 04:47:39,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:39,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-26 04:47:39,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-08-26 04:47:39,758 INFO L87 Difference]: Start difference. First operand 239 states and 273 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 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) [2021-08-26 04:47:41,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:41,929 INFO L93 Difference]: Finished difference Result 379 states and 423 transitions. [2021-08-26 04:47:41,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-26 04:47:41,929 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-26 04:47:41,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:41,930 INFO L225 Difference]: With dead ends: 379 [2021-08-26 04:47:41,930 INFO L226 Difference]: Without dead ends: 372 [2021-08-26 04:47:41,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2267.9ms TimeCoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2021-08-26 04:47:41,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-08-26 04:47:41,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 229. [2021-08-26 04:47:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 226 states have (on average 1.163716814159292) internal successors, (263), 228 states have internal predecessors, (263), 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) [2021-08-26 04:47:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 263 transitions. [2021-08-26 04:47:41,960 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 263 transitions. Word has length 42 [2021-08-26 04:47:41,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:41,960 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 263 transitions. [2021-08-26 04:47:41,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 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) [2021-08-26 04:47:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 263 transitions. [2021-08-26 04:47:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-26 04:47:41,961 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:41,961 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:41,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:42,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-08-26 04:47:42,179 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:42,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:42,180 INFO L82 PathProgramCache]: Analyzing trace with hash 188726232, now seen corresponding path program 2 times [2021-08-26 04:47:42,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:42,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315754849] [2021-08-26 04:47:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:42,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:42,197 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:42,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400694525] [2021-08-26 04:47:42,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:47:42,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:42,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:42,199 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:42,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-26 04:47:42,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:47:42,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:42,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 04:47:42,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:43,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:43,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315754849] [2021-08-26 04:47:43,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:43,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400694525] [2021-08-26 04:47:43,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400694525] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:43,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:43,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 04:47:43,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991801637] [2021-08-26 04:47:43,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 04:47:43,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:43,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 04:47:43,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-08-26 04:47:43,134 INFO L87 Difference]: Start difference. First operand 229 states and 263 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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) [2021-08-26 04:47:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:43,556 INFO L93 Difference]: Finished difference Result 369 states and 414 transitions. [2021-08-26 04:47:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-26 04:47:43,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-26 04:47:43,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:43,557 INFO L225 Difference]: With dead ends: 369 [2021-08-26 04:47:43,558 INFO L226 Difference]: Without dead ends: 367 [2021-08-26 04:47:43,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 229.0ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-08-26 04:47:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-08-26 04:47:43,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 183. [2021-08-26 04:47:43,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 180 states have (on average 1.1555555555555554) internal successors, (208), 182 states have internal predecessors, (208), 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) [2021-08-26 04:47:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 208 transitions. [2021-08-26 04:47:43,581 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 208 transitions. Word has length 42 [2021-08-26 04:47:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:43,581 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 208 transitions. [2021-08-26 04:47:43,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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) [2021-08-26 04:47:43,582 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 208 transitions. [2021-08-26 04:47:43,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-26 04:47:43,582 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:43,582 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-26 04:47:43,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:43,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:43,796 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:43,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:43,796 INFO L82 PathProgramCache]: Analyzing trace with hash -262948779, now seen corresponding path program 1 times [2021-08-26 04:47:43,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:43,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195156274] [2021-08-26 04:47:43,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:43,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:43,803 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:43,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580740919] [2021-08-26 04:47:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:43,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:43,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:43,804 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:43,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-26 04:47:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:44,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-26 04:47:44,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 04:47:44,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:44,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195156274] [2021-08-26 04:47:44,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:44,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580740919] [2021-08-26 04:47:44,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580740919] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:44,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:44,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 04:47:44,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996442319] [2021-08-26 04:47:44,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 04:47:44,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 04:47:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:47:44,879 INFO L87 Difference]: Start difference. First operand 183 states and 208 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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) [2021-08-26 04:47:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:45,107 INFO L93 Difference]: Finished difference Result 302 states and 343 transitions. [2021-08-26 04:47:45,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 04:47:45,108 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-08-26 04:47:45,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:45,109 INFO L225 Difference]: With dead ends: 302 [2021-08-26 04:47:45,109 INFO L226 Difference]: Without dead ends: 298 [2021-08-26 04:47:45,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 104.6ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-08-26 04:47:45,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-08-26 04:47:45,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 216. [2021-08-26 04:47:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 213 states have (on average 1.1549295774647887) internal successors, (246), 215 states have internal predecessors, (246), 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) [2021-08-26 04:47:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2021-08-26 04:47:45,138 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 43 [2021-08-26 04:47:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:45,138 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2021-08-26 04:47:45,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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) [2021-08-26 04:47:45,139 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2021-08-26 04:47:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-26 04:47:45,139 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:45,139 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:45,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:45,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:45,353 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:45,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:45,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1218716055, now seen corresponding path program 1 times [2021-08-26 04:47:45,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:45,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706303831] [2021-08-26 04:47:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:45,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:45,359 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:45,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116159954] [2021-08-26 04:47:45,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:45,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:45,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:45,361 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:45,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-26 04:47:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:46,100 WARN L261 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 97 conjunts are in the unsatisfiable core [2021-08-26 04:47:46,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:47,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:47,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706303831] [2021-08-26 04:47:47,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:47,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116159954] [2021-08-26 04:47:47,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116159954] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:47,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:47,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-08-26 04:47:47,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339934279] [2021-08-26 04:47:47,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-26 04:47:47,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:47,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-26 04:47:47,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-08-26 04:47:47,954 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 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) [2021-08-26 04:47:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:49,278 INFO L93 Difference]: Finished difference Result 433 states and 483 transitions. [2021-08-26 04:47:49,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-26 04:47:49,278 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-26 04:47:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:49,280 INFO L225 Difference]: With dead ends: 433 [2021-08-26 04:47:49,280 INFO L226 Difference]: Without dead ends: 431 [2021-08-26 04:47:49,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1204.1ms TimeCoverageRelationStatistics Valid=212, Invalid=1270, Unknown=0, NotChecked=0, Total=1482 [2021-08-26 04:47:49,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-08-26 04:47:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 195. [2021-08-26 04:47:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 192 states have (on average 1.15625) internal successors, (222), 194 states have internal predecessors, (222), 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) [2021-08-26 04:47:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2021-08-26 04:47:49,310 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 46 [2021-08-26 04:47:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:49,310 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2021-08-26 04:47:49,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 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) [2021-08-26 04:47:49,310 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2021-08-26 04:47:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-26 04:47:49,311 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:49,311 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:49,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:49,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-08-26 04:47:49,524 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:47:49,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:49,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1094753844, now seen corresponding path program 3 times [2021-08-26 04:47:49,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:49,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694910770] [2021-08-26 04:47:49,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:49,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:49,531 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:49,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75888452] [2021-08-26 04:47:49,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 04:47:49,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:49,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:49,532 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:49,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-26 04:47:50,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 04:47:50,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:50,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 04:47:50,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-08-26 04:47:51,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:51,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694910770] [2021-08-26 04:47:51,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:51,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75888452] [2021-08-26 04:47:51,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75888452] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:51,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:51,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 04:47:51,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488163706] [2021-08-26 04:47:51,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 04:47:51,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:51,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 04:47:51,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:47:51,481 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2021-08-26 04:47:58,249 WARN L207 SmtUtils]: Spent 6.21 s on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2021-08-26 04:47:59,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:59,919 INFO L93 Difference]: Finished difference Result 315 states and 355 transitions. [2021-08-26 04:47:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 04:47:59,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-26 04:47:59,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:59,921 INFO L225 Difference]: With dead ends: 315 [2021-08-26 04:47:59,921 INFO L226 Difference]: Without dead ends: 313 [2021-08-26 04:47:59,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6980.6ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-08-26 04:47:59,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-08-26 04:47:59,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 255. [2021-08-26 04:47:59,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 252 states have (on average 1.1587301587301588) internal successors, (292), 254 states have internal predecessors, (292), 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) [2021-08-26 04:47:59,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 292 transitions. [2021-08-26 04:47:59,963 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 292 transitions. Word has length 46 [2021-08-26 04:47:59,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:59,963 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 292 transitions. [2021-08-26 04:47:59,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2021-08-26 04:47:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 292 transitions. [2021-08-26 04:47:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-26 04:47:59,964 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:59,964 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:59,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-26 04:48:00,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-08-26 04:48:00,187 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:48:00,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:48:00,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1396125471, now seen corresponding path program 1 times [2021-08-26 04:48:00,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:48:00,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911571758] [2021-08-26 04:48:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:00,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:48:00,195 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:48:00,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509483221] [2021-08-26 04:48:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:00,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:48:00,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:48:00,202 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:48:00,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-26 04:48:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:48:01,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-26 04:48:01,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:48:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:48:01,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:48:01,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911571758] [2021-08-26 04:48:01,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:48:01,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509483221] [2021-08-26 04:48:01,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509483221] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:48:01,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:48:01,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 04:48:01,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836219069] [2021-08-26 04:48:01,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 04:48:01,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:48:01,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 04:48:01,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:48:01,585 INFO L87 Difference]: Start difference. First operand 255 states and 292 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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) [2021-08-26 04:48:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:48:01,957 INFO L93 Difference]: Finished difference Result 417 states and 479 transitions. [2021-08-26 04:48:01,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 04:48:01,981 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-08-26 04:48:01,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:48:01,982 INFO L225 Difference]: With dead ends: 417 [2021-08-26 04:48:01,982 INFO L226 Difference]: Without dead ends: 413 [2021-08-26 04:48:01,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 111.7ms TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-08-26 04:48:01,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-08-26 04:48:02,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 288. [2021-08-26 04:48:02,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 285 states have (on average 1.1578947368421053) internal successors, (330), 287 states have internal predecessors, (330), 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) [2021-08-26 04:48:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 330 transitions. [2021-08-26 04:48:02,032 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 330 transitions. Word has length 47 [2021-08-26 04:48:02,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:48:02,033 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 330 transitions. [2021-08-26 04:48:02,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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) [2021-08-26 04:48:02,033 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 330 transitions. [2021-08-26 04:48:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-26 04:48:02,033 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:48:02,033 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:48:02,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-26 04:48:02,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-26 04:48:02,253 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:48:02,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:48:02,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1572879977, now seen corresponding path program 2 times [2021-08-26 04:48:02,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:48:02,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637345513] [2021-08-26 04:48:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:02,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:48:02,263 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:48:02,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032300931] [2021-08-26 04:48:02,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:48:02,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:48:02,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:48:02,265 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:48:02,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-26 04:48:03,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:48:03,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:48:03,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 79 conjunts are in the unsatisfiable core [2021-08-26 04:48:03,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:48:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:48:04,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:48:04,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637345513] [2021-08-26 04:48:04,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:48:04,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032300931] [2021-08-26 04:48:04,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032300931] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:48:04,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:48:04,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-08-26 04:48:04,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801344680] [2021-08-26 04:48:04,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-26 04:48:04,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:48:04,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-26 04:48:04,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-08-26 04:48:04,218 INFO L87 Difference]: Start difference. First operand 288 states and 330 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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) [2021-08-26 04:48:05,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:48:05,501 INFO L93 Difference]: Finished difference Result 489 states and 554 transitions. [2021-08-26 04:48:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-26 04:48:05,501 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-08-26 04:48:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:48:05,503 INFO L225 Difference]: With dead ends: 489 [2021-08-26 04:48:05,503 INFO L226 Difference]: Without dead ends: 487 [2021-08-26 04:48:05,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 542.0ms TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2021-08-26 04:48:05,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-08-26 04:48:05,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 305. [2021-08-26 04:48:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 302 states have (on average 1.1523178807947019) internal successors, (348), 304 states have internal predecessors, (348), 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) [2021-08-26 04:48:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 348 transitions. [2021-08-26 04:48:05,621 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 348 transitions. Word has length 49 [2021-08-26 04:48:05,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:48:05,621 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 348 transitions. [2021-08-26 04:48:05,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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) [2021-08-26 04:48:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 348 transitions. [2021-08-26 04:48:05,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-26 04:48:05,622 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:48:05,622 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:48:05,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-26 04:48:05,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-26 04:48:05,823 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:48:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:48:05,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1242600867, now seen corresponding path program 2 times [2021-08-26 04:48:05,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:48:05,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816821281] [2021-08-26 04:48:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:05,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:48:05,831 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:48:05,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013387877] [2021-08-26 04:48:05,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:48:05,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:48:05,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:48:05,834 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:48:05,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-26 04:48:06,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:48:06,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:48:06,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 62 conjunts are in the unsatisfiable core [2021-08-26 04:48:06,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:48:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:48:08,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:48:08,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816821281] [2021-08-26 04:48:08,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:48:08,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013387877] [2021-08-26 04:48:08,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013387877] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:48:08,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:48:08,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-08-26 04:48:08,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155278994] [2021-08-26 04:48:08,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 04:48:08,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:48:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 04:48:08,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-08-26 04:48:08,016 INFO L87 Difference]: Start difference. First operand 305 states and 348 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-08-26 04:48:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:48:08,652 INFO L93 Difference]: Finished difference Result 432 states and 488 transitions. [2021-08-26 04:48:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 04:48:08,652 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-08-26 04:48:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:48:08,653 INFO L225 Difference]: With dead ends: 432 [2021-08-26 04:48:08,653 INFO L226 Difference]: Without dead ends: 430 [2021-08-26 04:48:08,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 362.0ms TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2021-08-26 04:48:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-08-26 04:48:08,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 302. [2021-08-26 04:48:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 299 states have (on average 1.1505016722408026) internal successors, (344), 301 states have internal predecessors, (344), 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) [2021-08-26 04:48:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 344 transitions. [2021-08-26 04:48:08,709 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 344 transitions. Word has length 50 [2021-08-26 04:48:08,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:48:08,709 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 344 transitions. [2021-08-26 04:48:08,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2021-08-26 04:48:08,709 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 344 transitions. [2021-08-26 04:48:08,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-26 04:48:08,711 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:48:08,712 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:48:08,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-26 04:48:08,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-26 04:48:08,933 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:48:08,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:48:08,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1911139069, now seen corresponding path program 3 times [2021-08-26 04:48:08,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:48:08,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188165083] [2021-08-26 04:48:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:08,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:48:08,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:48:08,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25434071] [2021-08-26 04:48:08,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 04:48:08,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:48:08,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:48:08,943 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:48:08,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-26 04:48:10,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 04:48:10,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:48:10,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-26 04:48:10,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:48:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-08-26 04:48:11,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:48:11,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188165083] [2021-08-26 04:48:11,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:48:11,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25434071] [2021-08-26 04:48:11,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25434071] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:48:11,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:48:11,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 04:48:11,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051938626] [2021-08-26 04:48:11,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 04:48:11,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:48:11,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 04:48:11,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:48:11,888 INFO L87 Difference]: Start difference. First operand 302 states and 344 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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) [2021-08-26 04:48:22,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:48:22,443 INFO L93 Difference]: Finished difference Result 306 states and 347 transitions. [2021-08-26 04:48:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 04:48:22,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-08-26 04:48:22,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:48:22,444 INFO L225 Difference]: With dead ends: 306 [2021-08-26 04:48:22,444 INFO L226 Difference]: Without dead ends: 304 [2021-08-26 04:48:22,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4687.2ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:48:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-08-26 04:48:22,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 173. [2021-08-26 04:48:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 171 states have (on average 1.1169590643274854) internal successors, (191), 172 states have internal predecessors, (191), 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) [2021-08-26 04:48:22,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 191 transitions. [2021-08-26 04:48:22,503 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 191 transitions. Word has length 51 [2021-08-26 04:48:22,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:48:22,504 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 191 transitions. [2021-08-26 04:48:22,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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) [2021-08-26 04:48:22,504 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 191 transitions. [2021-08-26 04:48:22,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-26 04:48:22,504 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:48:22,505 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:48:22,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-08-26 04:48:22,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:48:22,721 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:48:22,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:48:22,721 INFO L82 PathProgramCache]: Analyzing trace with hash -230789525, now seen corresponding path program 3 times [2021-08-26 04:48:22,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:48:22,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522197513] [2021-08-26 04:48:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:22,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:48:22,730 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:48:22,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949375582] [2021-08-26 04:48:22,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 04:48:22,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:48:22,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:48:22,732 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:48:22,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-26 04:48:23,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 04:48:23,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:48:23,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 49 conjunts are in the unsatisfiable core [2021-08-26 04:48:23,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:48:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-26 04:48:24,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:48:24,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522197513] [2021-08-26 04:48:24,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:48:24,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949375582] [2021-08-26 04:48:24,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949375582] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:48:24,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:48:24,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 04:48:24,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055107629] [2021-08-26 04:48:24,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 04:48:24,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:48:24,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 04:48:24,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-08-26 04:48:24,666 INFO L87 Difference]: Start difference. First operand 173 states and 191 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 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) [2021-08-26 04:48:25,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:48:25,038 INFO L93 Difference]: Finished difference Result 308 states and 342 transitions. [2021-08-26 04:48:25,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 04:48:25,038 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-08-26 04:48:25,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:48:25,039 INFO L225 Difference]: With dead ends: 308 [2021-08-26 04:48:25,039 INFO L226 Difference]: Without dead ends: 304 [2021-08-26 04:48:25,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 222.6ms TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-08-26 04:48:25,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-08-26 04:48:25,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 203. [2021-08-26 04:48:25,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 201 states have (on average 1.1243781094527363) internal successors, (226), 202 states have internal predecessors, (226), 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) [2021-08-26 04:48:25,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 226 transitions. [2021-08-26 04:48:25,088 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 226 transitions. Word has length 53 [2021-08-26 04:48:25,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:48:25,088 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 226 transitions. [2021-08-26 04:48:25,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 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) [2021-08-26 04:48:25,089 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 226 transitions. [2021-08-26 04:48:25,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-26 04:48:25,089 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:48:25,089 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:48:25,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-08-26 04:48:25,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-08-26 04:48:25,310 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:48:25,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:48:25,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1254528046, now seen corresponding path program 3 times [2021-08-26 04:48:25,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:48:25,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129737595] [2021-08-26 04:48:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:25,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:48:25,331 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:48:25,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902770141] [2021-08-26 04:48:25,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 04:48:25,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:48:25,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:48:25,333 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:48:25,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-08-26 04:48:26,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 04:48:26,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:48:26,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 55 conjunts are in the unsatisfiable core [2021-08-26 04:48:26,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:48:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-26 04:48:32,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:48:32,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129737595] [2021-08-26 04:48:32,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:48:32,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902770141] [2021-08-26 04:48:32,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902770141] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:48:32,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:48:32,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-08-26 04:48:32,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508966767] [2021-08-26 04:48:32,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 04:48:32,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:48:32,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 04:48:32,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=102, Unknown=3, NotChecked=0, Total=132 [2021-08-26 04:48:32,934 INFO L87 Difference]: Start difference. First operand 203 states and 226 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2021-08-26 04:48:40,495 WARN L207 SmtUtils]: Spent 6.06 s on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-08-26 04:49:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:49:17,232 INFO L93 Difference]: Finished difference Result 339 states and 375 transitions. [2021-08-26 04:49:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-26 04:49:17,232 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-08-26 04:49:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:49:17,233 INFO L225 Difference]: With dead ends: 339 [2021-08-26 04:49:17,233 INFO L226 Difference]: Without dead ends: 337 [2021-08-26 04:49:17,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 31918.9ms TimeCoverageRelationStatistics Valid=148, Invalid=491, Unknown=11, NotChecked=0, Total=650 [2021-08-26 04:49:17,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-08-26 04:49:17,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2021-08-26 04:49:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 184 states have (on average 1.1304347826086956) internal successors, (208), 185 states have internal predecessors, (208), 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) [2021-08-26 04:49:17,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 208 transitions. [2021-08-26 04:49:17,282 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 208 transitions. Word has length 54 [2021-08-26 04:49:17,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:49:17,282 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 208 transitions. [2021-08-26 04:49:17,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2021-08-26 04:49:17,282 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 208 transitions. [2021-08-26 04:49:17,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-26 04:49:17,283 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:49:17,283 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:49:17,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-08-26 04:49:17,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:49:17,498 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:49:17,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:49:17,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1302063636, now seen corresponding path program 4 times [2021-08-26 04:49:17,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:49:17,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974127122] [2021-08-26 04:49:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:49:17,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:49:17,509 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:49:17,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59029068] [2021-08-26 04:49:17,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 04:49:17,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:49:17,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:49:17,511 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:49:17,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-08-26 04:49:18,773 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 04:49:18,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:49:18,775 WARN L261 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 96 conjunts are in the unsatisfiable core [2021-08-26 04:49:18,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:49:24,192 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:49:24,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:49:24,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974127122] [2021-08-26 04:49:24,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:49:24,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59029068] [2021-08-26 04:49:24,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59029068] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:49:24,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:49:24,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-08-26 04:49:24,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20761047] [2021-08-26 04:49:24,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-08-26 04:49:24,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:49:24,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-08-26 04:49:24,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-08-26 04:49:24,194 INFO L87 Difference]: Start difference. First operand 186 states and 208 transitions. Second operand has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 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) [2021-08-26 04:49:29,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:49:29,271 INFO L93 Difference]: Finished difference Result 380 states and 424 transitions. [2021-08-26 04:49:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-26 04:49:29,272 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-08-26 04:49:29,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:49:29,273 INFO L225 Difference]: With dead ends: 380 [2021-08-26 04:49:29,273 INFO L226 Difference]: Without dead ends: 377 [2021-08-26 04:49:29,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 5646.5ms TimeCoverageRelationStatistics Valid=340, Invalid=1730, Unknown=0, NotChecked=0, Total=2070 [2021-08-26 04:49:29,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-08-26 04:49:29,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 146. [2021-08-26 04:49:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.1379310344827587) internal successors, (165), 145 states have internal predecessors, (165), 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) [2021-08-26 04:49:29,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 165 transitions. [2021-08-26 04:49:29,320 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 165 transitions. Word has length 55 [2021-08-26 04:49:29,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:49:29,321 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 165 transitions. [2021-08-26 04:49:29,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 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) [2021-08-26 04:49:29,321 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 165 transitions. [2021-08-26 04:49:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-26 04:49:29,321 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:49:29,321 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:49:29,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-08-26 04:49:29,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:49:29,538 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:49:29,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:49:29,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1170208386, now seen corresponding path program 2 times [2021-08-26 04:49:29,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:49:29,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806749802] [2021-08-26 04:49:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:49:29,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:49:29,547 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:49:29,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703827837] [2021-08-26 04:49:29,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:49:29,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:49:29,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:49:29,549 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:49:29,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-08-26 04:49:30,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:49:30,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:49:30,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-26 04:49:30,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:49:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:49:31,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:49:31,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806749802] [2021-08-26 04:49:31,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:49:31,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703827837] [2021-08-26 04:49:31,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703827837] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:49:31,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:49:31,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-08-26 04:49:31,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872599683] [2021-08-26 04:49:31,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 04:49:31,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:49:31,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 04:49:31,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-08-26 04:49:31,641 INFO L87 Difference]: Start difference. First operand 146 states and 165 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2021-08-26 04:49:32,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:49:32,313 INFO L93 Difference]: Finished difference Result 209 states and 232 transitions. [2021-08-26 04:49:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-26 04:49:32,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-08-26 04:49:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:49:32,314 INFO L225 Difference]: With dead ends: 209 [2021-08-26 04:49:32,314 INFO L226 Difference]: Without dead ends: 207 [2021-08-26 04:49:32,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 444.7ms TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2021-08-26 04:49:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-08-26 04:49:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 155. [2021-08-26 04:49:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.1363636363636365) internal successors, (175), 154 states have internal predecessors, (175), 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) [2021-08-26 04:49:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 175 transitions. [2021-08-26 04:49:32,366 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 175 transitions. Word has length 56 [2021-08-26 04:49:32,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:49:32,366 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 175 transitions. [2021-08-26 04:49:32,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2021-08-26 04:49:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 175 transitions. [2021-08-26 04:49:32,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-26 04:49:32,367 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:49:32,367 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:49:32,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-08-26 04:49:32,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-08-26 04:49:32,589 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 04:49:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:49:32,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1127003380, now seen corresponding path program 3 times [2021-08-26 04:49:32,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:49:32,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698091288] [2021-08-26 04:49:32,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:49:32,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:49:32,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:49:32,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664272914] [2021-08-26 04:49:32,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 04:49:32,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:49:32,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:49:32,615 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:49:32,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-08-26 04:49:34,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 04:49:34,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:49:34,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-26 04:49:34,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:49:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-08-26 04:49:34,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:49:34,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698091288] [2021-08-26 04:49:34,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:49:34,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664272914] [2021-08-26 04:49:34,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664272914] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:49:34,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:49:34,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:49:34,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224041631] [2021-08-26 04:49:34,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:49:34,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:49:34,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:49:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:49:34,249 INFO L87 Difference]: Start difference. First operand 155 states and 175 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-08-26 04:49:34,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:49:34,403 INFO L93 Difference]: Finished difference Result 161 states and 181 transitions. [2021-08-26 04:49:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 04:49:34,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-08-26 04:49:34,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:49:34,404 INFO L225 Difference]: With dead ends: 161 [2021-08-26 04:49:34,404 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 04:49:34,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 66.3ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:49:34,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 04:49:34,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 04:49:34,405 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) [2021-08-26 04:49:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 04:49:34,405 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-08-26 04:49:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:49:34,405 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 04:49:34,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-08-26 04:49:34,405 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 04:49:34,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 04:49:34,407 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:49:34,408 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:49:34,408 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:49:34,408 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:49:34,408 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:49:34,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-08-26 04:49:34,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-08-26 04:49:34,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 04:49:34,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:49:35,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:49:37,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:49:39,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:49:41,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:49:43,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:49:43,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:49:43,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:49:43,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:50:12,447 WARN L207 SmtUtils]: Spent 27.74 s on a formula simplification. DAG size of input: 442 DAG size of output: 97 [2021-08-26 04:50:48,349 WARN L207 SmtUtils]: Spent 35.90 s on a formula simplification. DAG size of input: 639 DAG size of output: 72 [2021-08-26 04:51:54,363 WARN L207 SmtUtils]: Spent 1.10 m on a formula simplification. DAG size of input: 642 DAG size of output: 70 [2021-08-26 04:53:03,308 WARN L207 SmtUtils]: Spent 1.15 m on a formula simplification. DAG size of input: 717 DAG size of output: 105 [2021-08-26 04:54:15,848 WARN L207 SmtUtils]: Spent 1.21 m on a formula simplification. DAG size of input: 587 DAG size of output: 74 [2021-08-26 04:55:16,017 WARN L207 SmtUtils]: Spent 59.25 s on a formula simplification. DAG size of input: 632 DAG size of output: 75 [2021-08-26 04:55:16,020 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:55:16,020 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:55:16,020 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse0 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~a~0)) (.cse10 (= ULTIMATE.start_main_~p~0 1)) (.cse11 (<= 1 ULTIMATE.start_main_~b~0)) (.cse12 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse13 (= ULTIMATE.start_main_~q~0 0)) (.cse14 (= ULTIMATE.start_main_~r~0 0)) (.cse15 (= ULTIMATE.start_main_~s~0 1)) (.cse16 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse1 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse2 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse17 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse6 (<= 1 ULTIMATE.start_main_~y~0)) (.cse18 (= ULTIMATE.start_main_~d~0 1)) (.cse8 (<= 1 ULTIMATE.start_main_~x~0)) (.cse9 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 (let ((.cse3 (= 0 (mod ULTIMATE.start_main_~d~0 (- 2)))) (.cse7 (= ULTIMATE.start_main_~v~0 (* 2 (* ULTIMATE.start_main_~b~0 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2))))))) (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse3 .cse4 .cse10 .cse5 .cse11 .cse12 .cse13 .cse7 .cse14 .cse15 .cse9 .cse16)))) (and .cse2 .cse4 (= ULTIMATE.start_main_~k~0 0) .cse5 .cse17 .cse6 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) (not (= ULTIMATE.start_main_~b~0 0)) .cse18 .cse8 .cse9) (and .cse0 (or (and .cse4 .cse10 .cse5 .cse17 .cse11 .cse12 .cse13 .cse14 .cse18 .cse15 .cse9 .cse16) (and .cse1 .cse2 .cse4 .cse5 .cse17 .cse6 .cse18 .cse8 .cse9))))) [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:55:16,021 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse18 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)))) (let ((.cse1 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse0 (= .cse18 ULTIMATE.start_main_~a~0)) (.cse2 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse7 (<= 1 ULTIMATE.start_main_~x~0)) (.cse16 (= 0 (mod ULTIMATE.start_main_~d~0 (- 2)))) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse9 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse10 (= ULTIMATE.start_main_~p~0 1)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (<= 1 ULTIMATE.start_main_~y~0)) (.cse11 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse12 (= ULTIMATE.start_main_~q~0 0)) (.cse17 (= ULTIMATE.start_main_~v~0 (* 2 (* ULTIMATE.start_main_~b~0 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))))) (.cse13 (= ULTIMATE.start_main_~r~0 0)) (.cse14 (= ULTIMATE.start_main_~s~0 1)) (.cse8 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (.cse15 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (let ((.cse6 (= ULTIMATE.start_main_~d~0 1))) (or (and .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0) .cse5 .cse6 .cse7 .cse8) (and .cse3 .cse9 .cse10 .cse4 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0) .cse5 .cse11 .cse12 .cse13 .cse6 .cse14 .cse8 .cse15)))) (and .cse1 .cse0 .cse2 .cse16 .cse3 .cse4 .cse5 .cse17 .cse7 .cse8) (and .cse16 .cse3 .cse9 .cse10 .cse4 .cse5 .cse11 .cse12 .cse17 .cse13 .cse14 .cse8 (= .cse18 ULTIMATE.start_main_~x~0) .cse15)))) [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:55:16,021 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse0 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~a~0)) (.cse1 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse2 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse16 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (<= 1 ULTIMATE.start_main_~x~0)) (.cse8 (<= 1 ULTIMATE.start_main_~a~0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse9 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse10 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse11 (= ULTIMATE.start_main_~q~0 0)) (.cse12 (= ULTIMATE.start_main_~r~0 0)) (.cse13 (= ULTIMATE.start_main_~s~0 1)) (.cse7 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (.cse14 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse15 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and .cse0 (let ((.cse3 (= 0 (mod ULTIMATE.start_main_~d~0 (- 2)))) (.cse5 (= ULTIMATE.start_main_~v~0 (* 2 (* ULTIMATE.start_main_~b~0 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2))))))) (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse3 .cse8 .cse4 .cse9 .cse10 .cse11 .cse5 .cse12 .cse13 .cse7 .cse14))) .cse15 .cse16) (and .cse0 (let ((.cse17 (= ULTIMATE.start_main_~d~0 1))) (or (and .cse1 .cse2 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0) .cse16 .cse17 .cse6 .cse7) (and .cse8 .cse4 .cse9 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0) (<= 1 ULTIMATE.start_main_~b~0) .cse10 .cse11 .cse12 .cse17 .cse13 .cse7 .cse14))) .cse15))) [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:55:16,021 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 53 54) the Hoare annotation is: (let ((.cse10 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)))) (let ((.cse4 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse13 (= .cse10 ULTIMATE.start_main_~a~0)) (.cse1 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse5 (<= 1 ULTIMATE.start_main_~b~0)) (.cse6 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_main_~r~0 0)) (.cse9 (= ULTIMATE.start_main_~s~0 1)) (.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse12 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse14 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse15 (<= 1 ULTIMATE.start_main_~y~0)) (.cse16 (<= 1 ULTIMATE.start_main_~x~0)) (.cse17 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~d~0 1) .cse9 (= .cse10 ULTIMATE.start_main_~x~0) .cse11) (and .cse12 .cse13 .cse14 .cse0 (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~b~0) .cse3 .cse4 .cse15 .cse16 .cse17) (and .cse13 (let ((.cse18 (= 0 (mod ULTIMATE.start_main_~d~0 (- 2)))) (.cse19 (= ULTIMATE.start_main_~v~0 (* 2 (* ULTIMATE.start_main_~b~0 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2))))))) (or (and .cse18 .cse0 .cse1 .cse2 .cse5 .cse6 .cse7 .cse19 .cse8 .cse9 .cse11) (and .cse12 .cse14 .cse18 .cse0 .cse15 .cse19 .cse16 .cse17))) .cse3)))) [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 04:55:16,021 INFO L860 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: true [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:55:16,021 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 57) the Hoare annotation is: (let ((.cse15 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse23 (= ULTIMATE.start_main_~q~0 1)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse3 (= ULTIMATE.start_main_~p~0 1)) (.cse7 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse8 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~s~0 1)) (.cse11 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (.cse12 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse24 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)))) (let ((.cse13 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse0 (= .cse24 ULTIMATE.start_main_~a~0)) (.cse14 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse16 (<= 1 ULTIMATE.start_main_~y~0)) (.cse9 (= ULTIMATE.start_main_~d~0 1)) (.cse17 (<= 1 ULTIMATE.start_main_~x~0)) (.cse19 (or (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse1 (= ULTIMATE.start_main_~s~0 0) (= ULTIMATE.start_main_~p~0 0) .cse15 (= ULTIMATE.start_main_~r~0 1) .cse23 .cse11 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (and .cse1 .cse2 (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~b~0) .cse3 .cse7 .cse8 .cse10 .cse11 .cse12))) (.cse20 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse6 (<= 1 ULTIMATE.start_main_~b~0)) (.cse18 (= ULTIMATE.start_main_~v~0 (* 2 (* ULTIMATE.start_main_~b~0 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))))) (.cse21 (= .cse24 ULTIMATE.start_main_~x~0))) (or (and .cse0 (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse13 .cse14 .cse1 .cse4 .cse15 .cse16 .cse9 .cse17 .cse11))) (and .cse13 .cse0 .cse14 (= 0 (mod ULTIMATE.start_main_~d~0 (- 2))) .cse1 .cse4 .cse16 .cse18 .cse17 .cse11) (and .cse19 .cse5 .cse6 .cse20 .cse9 .cse21 .cse12) (and (let ((.cse22 (= ULTIMATE.start_main_~k~0 0))) (or (and .cse1 .cse22 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse15 .cse16 .cse20 (not (= ULTIMATE.start_main_~b~0 0)) .cse9 .cse17 .cse11 (< ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0)) (and .cse22 .cse19 .cse6 .cse20 .cse23))) .cse5) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse18 (= ULTIMATE.start_main_~r~0 0) .cse10 .cse21 .cse12)))) [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 57) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L860 garLoopResultBuilder]: At program point L73(lines 18 74) the Hoare annotation is: true [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L853 garLoopResultBuilder]: At program point L40-2(lines 40 60) the Hoare annotation is: (let ((.cse14 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse20 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)))) (let ((.cse0 (= .cse20 ULTIMATE.start_main_~a~0)) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse3 (<= 1 ULTIMATE.start_main_~a~0)) (.cse4 (= ULTIMATE.start_main_~p~0 1)) (.cse12 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse13 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse6 (<= 1 ULTIMATE.start_main_~b~0)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_main_~r~0 0)) (.cse9 (= ULTIMATE.start_main_~s~0 1)) (.cse10 (let ((.cse22 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0))) (or (and .cse14 .cse22 (<= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0)) (and .cse14 .cse22 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))))) (.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse21 (= ULTIMATE.start_main_~k~0 0)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse19 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse15 (<= 1 ULTIMATE.start_main_~x~0)) (.cse16 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 .cse1 .cse2 (or (and .cse3 .cse4 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~v~0 (* 2 (* ULTIMATE.start_main_~b~0 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2))))) .cse8 .cse9 .cse10 .cse11) (and .cse12 .cse13 (= 0 (mod ULTIMATE.start_main_~d~0 (- 2))) .cse14 .cse5 .cse15 .cse16))) (and .cse0 .cse5 .cse1 .cse2 (let ((.cse17 (< ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0)) (.cse18 (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~b~0))) (or (and .cse3 .cse17 .cse18 .cse4 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse12 .cse13 .cse14 .cse17 .cse18 .cse16))) .cse15) (and .cse6 .cse7 .cse19 .cse8 .cse9 .cse15 .cse10 .cse16 (= .cse20 ULTIMATE.start_main_~x~0) .cse11) (and .cse14 .cse21 (= ULTIMATE.start_main_~s~0 0) (= ULTIMATE.start_main_~b~0 (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0))) (= ULTIMATE.start_main_~p~0 0) .cse19 (= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~q~0 1) .cse15 .cse16 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (and .cse14 .cse21 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse19 (not (= ULTIMATE.start_main_~b~0 0)) .cse15 .cse16)))) [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point L40-3(lines 40 60) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 42) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L853 garLoopResultBuilder]: At program point L33-2(lines 33 71) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~x~0)) (.cse2 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (<= 1 ULTIMATE.start_main_~p~0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (= ULTIMATE.start_main_~s~0 0) (= ULTIMATE.start_main_~b~0 (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0))) (= ULTIMATE.start_main_~p~0 0) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~q~0 1) .cse1 .cse2 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (and (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) .cse1 .cse2))) [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point L33-3(lines 33 71) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point L34(lines 34 35) no Hoare annotation was computed. [2021-08-26 04:55:16,022 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:55:16,035 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 04:55:16,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 04:55:16 BoogieIcfgContainer [2021-08-26 04:55:16,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 04:55:16,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 04:55:16,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 04:55:16,105 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 04:55:16,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:47:17" (3/4) ... [2021-08-26 04:55:16,120 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 04:55:16,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-26 04:55:16,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 04:55:16,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 04:55:16,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 04:55:16,159 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 04:55:16,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 04:55:16,159 INFO L168 Benchmark]: Toolchain (without parser) took 478849.17 ms. Allocated memory was 54.5 MB in the beginning and 1.1 GB in the end (delta: 1.1 GB). Free memory was 32.1 MB in the beginning and 534.0 MB in the end (delta: -501.9 MB). Peak memory consumption was 581.8 MB. Max. memory is 16.1 GB. [2021-08-26 04:55:16,160 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.1 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:55:16,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.43 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 31.9 MB in the beginning and 61.3 MB in the end (delta: -29.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-08-26 04:55:16,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.63 ms. Allocated memory is still 77.6 MB. Free memory was 61.1 MB in the beginning and 59.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 04:55:16,160 INFO L168 Benchmark]: Boogie Preprocessor took 35.55 ms. Allocated memory is still 77.6 MB. Free memory was 59.5 MB in the beginning and 58.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 04:55:16,160 INFO L168 Benchmark]: RCFGBuilder took 303.31 ms. Allocated memory is still 77.6 MB. Free memory was 58.3 MB in the beginning and 60.7 MB in the end (delta: -2.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-08-26 04:55:16,161 INFO L168 Benchmark]: TraceAbstraction took 478191.94 ms. Allocated memory was 77.6 MB in the beginning and 1.1 GB in the end (delta: 1.1 GB). Free memory was 60.0 MB in the beginning and 538.2 MB in the end (delta: -478.1 MB). Peak memory consumption was 777.1 MB. Max. memory is 16.1 GB. [2021-08-26 04:55:16,161 INFO L168 Benchmark]: Witness Printer took 53.78 ms. Allocated memory is still 1.1 GB. Free memory was 538.2 MB in the beginning and 534.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 04:55:16,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.1 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.43 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 31.9 MB in the beginning and 61.3 MB in the end (delta: -29.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.63 ms. Allocated memory is still 77.6 MB. Free memory was 61.1 MB in the beginning and 59.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.55 ms. Allocated memory is still 77.6 MB. Free memory was 59.5 MB in the beginning and 58.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 303.31 ms. Allocated memory is still 77.6 MB. Free memory was 58.3 MB in the beginning and 60.7 MB in the end (delta: -2.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 478191.94 ms. Allocated memory was 77.6 MB in the beginning and 1.1 GB in the end (delta: 1.1 GB). Free memory was 60.0 MB in the beginning and 538.2 MB in the end (delta: -478.1 MB). Peak memory consumption was 777.1 MB. Max. memory is 16.1 GB. * Witness Printer took 53.78 ms. Allocated memory is still 1.1 GB. Free memory was 538.2 MB in the beginning and 534.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 478076.6ms, OverallIterations: 35, TraceHistogramMax: 6, EmptinessCheckTime: 21.7ms, AutomataDifference: 80153.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 341397.1ms, InitialAbstractionConstructionTime: 5.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1108 SDtfs, 3961 SDslu, 4495 SDs, 0 SdLazy, 8734 SolverSat, 994 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 34176.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1464 GetRequests, 928 SyntacticMatches, 0 SemanticMatches, 536 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2219 ImplicationChecksByTransitivity, 57422.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=305occurred in iteration=28, InterpolantAutomatonStates: 431, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 896.6ms AutomataMinimizationTime, 35 MinimizatonAttempts, 2995 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 91 NumberOfFragments, 1755 HoareAnnotationTreeSize, 9 FomulaSimplifications, 93406961217 FormulaSimplificationTreeSizeReduction, 10080.9ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 7065364851 FormulaSimplificationTreeSizeReductionInter, 331297.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 210.7ms SsaConstructionTime, 656.3ms SatisfiabilityAnalysisTime, 29791.5ms InterpolantComputationTime, 1213 NumberOfCodeBlocks, 1090 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 1178 ConstructedInterpolants, 2 QuantifiedInterpolants, 15758 SizeOfPredicates, 414 NumberOfNonLiveVariables, 4620 ConjunctsInSsa, 1121 ConjunctsInUnsatCore, 35 InterpolantComputations, 9 PerfectInterpolantSequences, 322/875 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 5 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((c + b * k == a && d * b == v) && 1 <= y) && ((((((((((1 <= a && p == 1) && 1 == cond) && 1 <= b) && q == 0) && v == 2 * (b * (d * -1 / -2))) && r == 0) && s == 1) && (((cond == 1 && a == x) && c <= x) || ((cond == 1 && a == x) && b <= x))) && b == y) || ((((((s * y + q * x == b && b < a) && 0 == d % -2) && cond == 1) && 1 == cond) && 1 <= x) && a == r * y + p * x))) || (((((c + b * k == a && 1 == cond) && d * b == v) && 1 <= y) && ((((((((((1 <= a && c < b) && v <= b) && p == 1) && 1 <= b) && q == 0) && r == 0) && s == 1) && (((cond == 1 && a == x) && c <= x) || ((cond == 1 && a == x) && b <= x))) && b == y) || (((((s * y + q * x == b && b < a) && cond == 1) && c < b) && v <= b) && a == r * y + p * x))) && 1 <= x)) || (((((((((1 <= b && q == 0) && c == a) && r == 0) && s == 1) && 1 <= x) && (((cond == 1 && a == x) && c <= x) || ((cond == 1 && a == x) && b <= x))) && a == r * y + p * x) && c + b * k == x) && b == y)) || ((((((((((cond == 1 && k == 0) && s == 0) && b == x + a * s) && p == 0) && c == a) && r == 1) && q == 1) && 1 <= x) && a == r * y + p * x) && x < a)) || ((((((((cond == 1 && k == 0) && b < c) && 1 <= cond) && 1 <= y) && c == a) && !(b == 0)) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((c + b * k == a && (((((((((s * y + q * x == b && b < a) && cond == 1) && 1 == cond) && b == v) && 1 <= y) && d == 1) && 1 <= x) && a == r * y + p * x) || ((((((((((((cond == 1 && 1 <= cond) && p == 1) && 1 == cond) && d * b == v) && 1 <= y) && b <= x) && q == 0) && r == 0) && d == 1) && s == 1) && a == r * y + p * x) && b == y))) || (((((((((s * y + q * x == b && c + b * k == a) && b < a) && 0 == d % -2) && cond == 1) && 1 == cond) && 1 <= y) && v == 2 * (b * (d * -1 / -2))) && 1 <= x) && a == r * y + p * x)) || (((((((((((((0 == d % -2 && cond == 1) && 1 <= cond) && p == 1) && 1 == cond) && 1 <= y) && b <= x) && q == 0) && v == 2 * (b * (d * -1 / -2))) && r == 0) && s == 1) && a == r * y + p * x) && c + b * k == x) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((c + b * k == a && (((((((s * y + q * x == b && b < a) && 0 == d % -2) && cond == 1) && v == 2 * (b * (d * -1 / -2))) && 1 <= x) && a == r * y + p * x) || ((((((((((0 == d % -2 && 1 <= a) && cond == 1) && a <= x) && b <= x) && q == 0) && v == 2 * (b * (d * -1 / -2))) && r == 0) && s == 1) && a == r * y + p * x) && b == y))) && 1 == cond) && 1 <= y) || ((c + b * k == a && ((((((((s * y + q * x == b && b < a) && cond == 1) && b == v) && 1 <= y) && d == 1) && 1 <= x) && a == r * y + p * x) || (((((((((((1 <= a && cond == 1) && a <= x) && d * b == v) && 1 <= b) && b <= x) && q == 0) && r == 0) && d == 1) && s == 1) && a == r * y + p * x) && b == y))) && 1 == cond) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((c + b * k == a && ((((((((((((cond == 1 && a == x) && p == 1) && 1 == cond) && d * b == v) && 1 <= b) && b <= x) && q == 0) && d == 1) && s == 1) && a == r * y + p * x) && b == y) || ((((((((s * y + q * x == b && b < a) && cond == 1) && 1 == cond) && b == v) && 1 <= y) && d == 1) && 1 <= x) && a == r * y + p * x))) || (((((((((s * y + q * x == b && c + b * k == a) && b < a) && 0 == d % -2) && cond == 1) && 1 == cond) && 1 <= y) && v == 2 * (b * (d * -1 / -2))) && 1 <= x) && a == r * y + p * x)) || (((((((((((((((b == x && cond == 1) && s == 0) && p == 0) && b == v) && r == 1) && q == 1) && a == r * y + p * x) && x < a) || ((((((((cond == 1 && a == x) && v <= b) && p == 1) && b <= x) && q == 0) && s == 1) && a == r * y + p * x) && b == y)) && d * b == v) && 1 <= b) && c == a) && d == 1) && c + b * k == x) && b == y)) || ((((((((((((cond == 1 && k == 0) && 1 <= cond) && b == v) && 1 <= y) && c == a) && !(b == 0)) && d == 1) && 1 <= x) && a == r * y + p * x) && v < c) || ((((k == 0 && (((((((((b == x && cond == 1) && s == 0) && p == 0) && b == v) && r == 1) && q == 1) && a == r * y + p * x) && x < a) || ((((((((cond == 1 && a == x) && v <= b) && p == 1) && b <= x) && q == 0) && s == 1) && a == r * y + p * x) && b == y))) && 1 <= b) && c == a) && q == 1)) && d * b == v)) || ((((((((((((cond == 1 && a == x) && p == 1) && 1 == cond) && d * b == v) && 1 <= b) && b <= x) && q == 0) && v == 2 * (b * (d * -1 / -2))) && r == 0) && s == 1) && c + b * k == x) && b == y) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: (((((((((((((cond == 1 && a == x) && p == 1) && 1 == cond) && d * b == v) && 1 <= b) && b <= x) && q == 0) && r == 0) && d == 1) && s == 1) && c + b * k == x) && b == y) || (((((((((s * y + q * x == b && c + b * k == a) && b < a) && cond == 1) && v <= b) && 1 == cond) && d * b == v) && 1 <= y) && 1 <= x) && a == r * y + p * x)) || ((c + b * k == a && (((((((((((0 == d % -2 && cond == 1) && a == x) && p == 1) && 1 <= b) && b <= x) && q == 0) && v == 2 * (b * (d * -1 / -2))) && r == 0) && s == 1) && b == y) || (((((((s * y + q * x == b && b < a) && 0 == d % -2) && cond == 1) && 1 <= y) && v == 2 * (b * (d * -1 / -2))) && 1 <= x) && a == r * y + p * x))) && 1 == cond) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && a <= x) && 1 <= b) && q == 0) && 1 <= p) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) || (((((((((cond == 1 && s == 0) && b == x + a * s) && p == 0) && 1 <= c) && r == 1) && q == 1) && 1 <= x) && a == r * y + p * x) && x < a)) || (((((b < a && cond == 1) && 1 <= cond) && 1 <= y) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((c + b * k == a && (((((((((s * y + q * x == b && b < a) && 0 == d % -2) && cond == 1) && 1 == cond) && 1 <= y) && v == 2 * (b * (d * -1 / -2))) && 1 <= x) && a == r * y + p * x) || (((((((((((0 == d % -2 && cond == 1) && p == 1) && 1 == cond) && 1 <= b) && b <= x) && q == 0) && v == 2 * (b * (d * -1 / -2))) && r == 0) && s == 1) && a == r * y + p * x) && b == y))) || ((((((((((b < a && cond == 1) && k == 0) && 1 == cond) && b == v) && 1 <= y) && c == a) && !(b == 0)) && d == 1) && 1 <= x) && a == r * y + p * x)) || (c + b * k == a && ((((((((((((cond == 1 && p == 1) && 1 == cond) && b == v) && 1 <= b) && b <= x) && q == 0) && r == 0) && d == 1) && s == 1) && a == r * y + p * x) && b == y) || ((((((((s * y + q * x == b && b < a) && cond == 1) && 1 == cond) && b == v) && 1 <= y) && d == 1) && 1 <= x) && a == r * y + p * x))) RESULT: Ultimate proved your program to be correct! [2021-08-26 04:55:16,380 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-08-26 04:55:16,408 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 137 Received shutdown request...